5 lines
94 KiB
JavaScript
5 lines
94 KiB
JavaScript
(function(root,factory){if(typeof define==="function"&&define.amd){define([],factory)}else if(typeof exports==="object"){module.exports=factory()}else{root.loki=factory()}})(this,function(){return function(){"use strict";var hasOwnProperty=Object.prototype.hasOwnProperty;var Utils={copyProperties:function(src,dest){var prop;for(prop in src){dest[prop]=src[prop]}},resolveTransformObject:function(subObj,params,depth){var prop,pname;if(typeof depth!=="number"){depth=0}if(++depth>=10)return subObj;for(prop in subObj){if(typeof subObj[prop]==="string"&&subObj[prop].indexOf("[%lktxp]")===0){pname=subObj[prop].substring(8);if(params.hasOwnProperty(pname)){subObj[prop]=params[pname]}}else if(typeof subObj[prop]==="object"){subObj[prop]=Utils.resolveTransformObject(subObj[prop],params,depth)}}return subObj},resolveTransformParams:function(transform,params){var idx,clonedStep,resolvedTransform=[];if(typeof params==="undefined")return transform;for(idx=0;idx<transform.length;idx++){clonedStep=clone(transform[idx],"shallow-recurse-objects");resolvedTransform.push(Utils.resolveTransformObject(clonedStep,params))}return resolvedTransform}};var Comparators={aeq:aeqHelper,lt:ltHelper,gt:gtHelper};function aeqHelper(prop1,prop2){var cv1,cv2,t1,t2;if(prop1===prop2)return true;if(!prop1||!prop2||prop1===true||prop2===true||prop1!==prop1||prop2!==prop2){switch(prop1){case undefined:t1=1;break;case null:t1=1;break;case false:t1=3;break;case true:t1=4;break;case"":t1=5;break;default:t1=prop1===prop1?9:0;break}switch(prop2){case undefined:t2=1;break;case null:t2=1;break;case false:t2=3;break;case true:t2=4;break;case"":t2=5;break;default:t2=prop2===prop2?9:0;break}if(t1!==9||t2!==9){return t1===t2}}cv1=Number(prop1);cv2=Number(prop2);if(cv1===cv1||cv2===cv2){return cv1===cv2}cv1=prop1.toString();cv2=prop2.toString();return cv1==cv2}function ltHelper(prop1,prop2,equal){var cv1,cv2,t1,t2;if(!prop1||!prop2||prop1===true||prop2===true||prop1!==prop1||prop2!==prop2){switch(prop1){case undefined:t1=1;break;case null:t1=1;break;case false:t1=3;break;case true:t1=4;break;case"":t1=5;break;default:t1=prop1===prop1?9:0;break}switch(prop2){case undefined:t2=1;break;case null:t2=1;break;case false:t2=3;break;case true:t2=4;break;case"":t2=5;break;default:t2=prop2===prop2?9:0;break}if(t1!==9||t2!==9){return t1===t2?equal:t1<t2}}cv1=Number(prop1);cv2=Number(prop2);if(cv1===cv1&&cv2===cv2){if(cv1<cv2)return true;if(cv1>cv2)return false;return equal}if(cv1===cv1&&cv2!==cv2){return true}if(cv2===cv2&&cv1!==cv1){return false}if(prop1<prop2)return true;if(prop1>prop2)return false;if(prop1==prop2)return equal;cv1=prop1.toString();cv2=prop2.toString();if(cv1<cv2){return true}if(cv1==cv2){return equal}return false}function gtHelper(prop1,prop2,equal){var cv1,cv2,t1,t2;if(!prop1||!prop2||prop1===true||prop2===true||prop1!==prop1||prop2!==prop2){switch(prop1){case undefined:t1=1;break;case null:t1=1;break;case false:t1=3;break;case true:t1=4;break;case"":t1=5;break;default:t1=prop1===prop1?9:0;break}switch(prop2){case undefined:t2=1;break;case null:t2=1;break;case false:t2=3;break;case true:t2=4;break;case"":t2=5;break;default:t2=prop2===prop2?9:0;break}if(t1!==9||t2!==9){return t1===t2?equal:t1>t2}}cv1=Number(prop1);cv2=Number(prop2);if(cv1===cv1&&cv2===cv2){if(cv1>cv2)return true;if(cv1<cv2)return false;return equal}if(cv1===cv1&&cv2!==cv2){return false}if(cv2===cv2&&cv1!==cv1){return true}if(prop1>prop2)return true;if(prop1<prop2)return false;if(prop1==prop2)return equal;cv1=prop1.toString();cv2=prop2.toString();if(cv1>cv2){return true}if(cv1==cv2){return equal}return false}function sortHelper(prop1,prop2,desc){if(Comparators.aeq(prop1,prop2))return 0;if(Comparators.lt(prop1,prop2,false)){return desc?1:-1}if(Comparators.gt(prop1,prop2,false)){return desc?-1:1}return 0}function compoundeval(properties,obj1,obj2){var res=0;var prop,field,val1,val2,arr;for(var i=0,len=properties.length;i<len;i++){prop=properties[i];field=prop[0];if(~field.indexOf(".")){arr=field.split(".");val1=arr.reduce(function(obj,i){return obj&&obj[i]||undefined},obj1);val2=arr.reduce(function(obj,i){return obj&&obj[i]||undefined},obj2)}else{val1=obj1[field];val2=obj2[field]}res=sortHelper(val1,val2,prop[1]);if(res!==0){return res}}return 0}function dotSubScan(root,paths,fun,value,poffset){var pathOffset=poffset||0;var path=paths[pathOffset];if(root===undefined||root===null||!hasOwnProperty.call(root,path)){return false}var valueFound=false;var element=root[path];if(pathOffset+1>=paths.length){valueFound=fun(element,value)}else if(Array.isArray(element)){for(var index=0,len=element.length;index<len;index+=1){valueFound=dotSubScan(element[index],paths,fun,value,pathOffset+1);if(valueFound===true){break}}}else{valueFound=dotSubScan(element,paths,fun,value,pathOffset+1)}return valueFound}function containsCheckFn(a){if(typeof a==="string"||Array.isArray(a)){return function(b){return a.indexOf(b)!==-1}}else if(typeof a==="object"&&a!==null){return function(b){return hasOwnProperty.call(a,b)}}return null}function doQueryOp(val,op){for(var p in op){if(hasOwnProperty.call(op,p)){return LokiOps[p](val,op[p])}}return false}var LokiOps={$eq:function(a,b){return a===b},$aeq:function(a,b){return a==b},$ne:function(a,b){if(b!==b){return a===a}return a!==b},$dteq:function(a,b){return Comparators.aeq(a,b)},$gt:function(a,b){return Comparators.gt(a,b,false)},$gte:function(a,b){return Comparators.gt(a,b,true)},$lt:function(a,b){return Comparators.lt(a,b,false)},$lte:function(a,b){return Comparators.lt(a,b,true)},$jgt:function(a,b){return a>b},$jgte:function(a,b){return a>=b},$jlt:function(a,b){return a<b},$jlte:function(a,b){return a<=b},$between:function(a,vals){if(a===undefined||a===null)return false;return Comparators.gt(a,vals[0],true)&&Comparators.lt(a,vals[1],true)},$jbetween:function(a,vals){if(a===undefined||a===null)return false;return a>=vals[0]&&a<=vals[1]},$in:function(a,b){return b.indexOf(a)!==-1},$nin:function(a,b){return b.indexOf(a)===-1},$keyin:function(a,b){return a in b},$nkeyin:function(a,b){return!(a in b)},$definedin:function(a,b){return b[a]!==undefined},$undefinedin:function(a,b){return b[a]===undefined},$regex:function(a,b){return b.test(a)},$containsString:function(a,b){return typeof a==="string"&&a.indexOf(b)!==-1},$containsNone:function(a,b){return!LokiOps.$containsAny(a,b)},$containsAny:function(a,b){var checkFn=containsCheckFn(a);if(checkFn!==null){return Array.isArray(b)?b.some(checkFn):checkFn(b)}return false},$contains:function(a,b){var checkFn=containsCheckFn(a);if(checkFn!==null){return Array.isArray(b)?b.every(checkFn):checkFn(b)}return false},$type:function(a,b){var type=typeof a;if(type==="object"){if(Array.isArray(a)){type="array"}else if(a instanceof Date){type="date"}}return typeof b!=="object"?type===b:doQueryOp(type,b)},$finite:function(a,b){return b===isFinite(a)},$size:function(a,b){if(Array.isArray(a)){return typeof b!=="object"?a.length===b:doQueryOp(a.length,b)}return false},$len:function(a,b){if(typeof a==="string"){return typeof b!=="object"?a.length===b:doQueryOp(a.length,b)}return false},$where:function(a,b){return b(a)===true},$not:function(a,b){return!doQueryOp(a,b)},$and:function(a,b){for(var idx=0,len=b.length;idx<len;idx+=1){if(!doQueryOp(a,b[idx])){return false}}return true},$or:function(a,b){for(var idx=0,len=b.length;idx<len;idx+=1){if(doQueryOp(a,b[idx])){return true}}return false}};var indexedOps={$eq:LokiOps.$eq,$aeq:true,$dteq:true,$gt:true,$gte:true,$lt:true,$lte:true,$in:true,$between:true};function clone(data,method){if(data===null||data===undefined){return null}var cloneMethod=method||"parse-stringify",cloned;switch(cloneMethod){case"parse-stringify":cloned=JSON.parse(JSON.stringify(data));break;case"jquery-extend-deep":cloned=jQuery.extend(true,{},data);break;case"shallow":cloned=Object.create(data.constructor.prototype);Object.keys(data).map(function(i){cloned[i]=data[i]});break;case"shallow-assign":cloned=Object.create(data.constructor.prototype);Object.assign(cloned,data);break;case"shallow-recurse-objects":cloned=clone(data,"shallow");var keys=Object.keys(data);keys.forEach(function(key){if(typeof data[key]==="object"&&data[key].constructor.name==="Object"){cloned[key]=clone(data[key],"shallow-recurse-objects")}else if(Array.isArray(data[key])){cloned[key]=cloneObjectArray(data[key],"shallow-recurse-objects")}});break;default:break}return cloned}function cloneObjectArray(objarray,method){if(method=="parse-stringify"){return clone(objarray,method)}var result=[];for(var i=0,len=objarray.length;i<len;i++){result[i]=clone(objarray[i],method)}return result}function localStorageAvailable(){try{return window&&window.localStorage!==undefined&&window.localStorage!==null}catch(e){return false}}function LokiEventEmitter(){}LokiEventEmitter.prototype.events={};LokiEventEmitter.prototype.asyncListeners=false;LokiEventEmitter.prototype.on=function(eventName,listener){var event;var self=this;if(Array.isArray(eventName)){eventName.forEach(function(currentEventName){self.on(currentEventName,listener)});return listener}event=this.events[eventName];if(!event){event=this.events[eventName]=[]}event.push(listener);return listener};LokiEventEmitter.prototype.emit=function(eventName){var self=this;var selfArgs=Array.prototype.slice.call(arguments,1);if(eventName&&this.events[eventName]){this.events[eventName].forEach(function(listener){if(self.asyncListeners){setTimeout(function(){listener.apply(self,selfArgs)},1)}else{listener.apply(self,selfArgs)}})}else{throw new Error("No event "+eventName+" defined")}};LokiEventEmitter.prototype.addListener=LokiEventEmitter.prototype.on;LokiEventEmitter.prototype.removeListener=function(eventName,listener){var self=this;if(Array.isArray(eventName)){eventName.forEach(function(currentEventName){self.removeListener(currentEventName,listener)});return}if(this.events[eventName]){var listeners=this.events[eventName];listeners.splice(listeners.indexOf(listener),1)}};function Loki(filename,options){this.filename=filename||"loki.db";this.collections=[];this.databaseVersion=1.5;this.engineVersion=1.5;this.autosave=false;this.autosaveInterval=5e3;this.autosaveHandle=null;this.throttledSaves=true;this.options={};this.persistenceMethod=null;this.persistenceAdapter=null;this.throttledSavePending=false;this.throttledCallbacks=[];this.verbose=options&&options.hasOwnProperty("verbose")?options.verbose:false;this.events={init:[],loaded:[],flushChanges:[],close:[],changes:[],warning:[]};var getENV=function(){if(typeof global!=="undefined"&&(global.android||global.NSObject)){return"NATIVESCRIPT"}if(typeof window==="undefined"){return"NODEJS"}if(typeof global!=="undefined"&&global.window&&process){return"NODEJS"}if(typeof document!=="undefined"){if(document.URL.indexOf("http://")===-1&&document.URL.indexOf("https://")===-1){return"CORDOVA"}return"BROWSER"}return"CORDOVA"};if(options&&options.hasOwnProperty("env")){this.ENV=options.env}else{this.ENV=getENV()}if(this.ENV==="undefined"){this.ENV="NODEJS"}this.configureOptions(options,true);this.on("init",this.clearChanges)}Loki.prototype=new LokiEventEmitter;Loki.prototype.constructor=Loki;Loki.prototype.getIndexedAdapter=function(){var adapter;if(typeof require==="function"){adapter=require("./loki-indexed-adapter.js")}return adapter};Loki.prototype.configureOptions=function(options,initialConfig){var defaultPersistence={NODEJS:"fs",BROWSER:"localStorage",CORDOVA:"localStorage",MEMORY:"memory"},persistenceMethods={fs:LokiFsAdapter,localStorage:LokiLocalStorageAdapter,memory:LokiMemoryAdapter};this.options={};this.persistenceMethod=null;this.persistenceAdapter=null;if(typeof options!=="undefined"){this.options=options;if(this.options.hasOwnProperty("persistenceMethod")){if(typeof persistenceMethods[options.persistenceMethod]=="function"){this.persistenceMethod=options.persistenceMethod;this.persistenceAdapter=new persistenceMethods[options.persistenceMethod]}}if(this.options.hasOwnProperty("adapter")){this.persistenceMethod="adapter";this.persistenceAdapter=options.adapter;this.options.adapter=null}if(options.autoload&&initialConfig){var self=this;setTimeout(function(){self.loadDatabase(options,options.autoloadCallback)},1)}if(this.options.hasOwnProperty("autosaveInterval")){this.autosaveDisable();this.autosaveInterval=parseInt(this.options.autosaveInterval,10)}if(this.options.hasOwnProperty("autosave")&&this.options.autosave){this.autosaveDisable();this.autosave=true;if(this.options.hasOwnProperty("autosaveCallback")){this.autosaveEnable(options,options.autosaveCallback)}else{this.autosaveEnable()}}if(this.options.hasOwnProperty("throttledSaves")){this.throttledSaves=this.options.throttledSaves}}if(!this.options.hasOwnProperty("serializationMethod")){this.options.serializationMethod="normal"}if(!this.options.hasOwnProperty("destructureDelimiter")){this.options.destructureDelimiter="$<\n"}if(this.persistenceAdapter===null){this.persistenceMethod=defaultPersistence[this.ENV];if(this.persistenceMethod){this.persistenceAdapter=new persistenceMethods[this.persistenceMethod]}}};Loki.prototype.copy=function(options){var databaseCopy=new Loki(this.filename,{env:"NA"});var clen,idx;options=options||{};databaseCopy.loadJSONObject(this,{retainDirtyFlags:true});if(options.hasOwnProperty("removeNonSerializable")&&options.removeNonSerializable===true){databaseCopy.autosaveHandle=null;databaseCopy.persistenceAdapter=null;clen=databaseCopy.collections.length;for(idx=0;idx<clen;idx++){databaseCopy.collections[idx].constraints=null;databaseCopy.collections[idx].ttl=null}}return databaseCopy};Loki.prototype.addCollection=function(name,options){var i,len=this.collections.length;if(options&&options.disableMeta===true){if(options.disableChangesApi===false){throw new Error("disableMeta option cannot be passed as true when disableChangesApi is passed as false")}if(options.disableDeltaChangesApi===false){throw new Error("disableMeta option cannot be passed as true when disableDeltaChangesApi is passed as false")}if(typeof options.ttl==="number"&&options.ttl>0){throw new Error("disableMeta option cannot be passed as true when ttl is enabled")}}for(i=0;i<len;i+=1){if(this.collections[i].name===name){return this.collections[i]}}var collection=new Collection(name,options);this.collections.push(collection);if(this.verbose)collection.console=console;return collection};Loki.prototype.loadCollection=function(collection){if(!collection.name){throw new Error("Collection must have a name property to be loaded")}this.collections.push(collection)};Loki.prototype.getCollection=function(collectionName){var i,len=this.collections.length;for(i=0;i<len;i+=1){if(this.collections[i].name===collectionName){return this.collections[i]}}this.emit("warning","collection "+collectionName+" not found");return null};Loki.prototype.renameCollection=function(oldName,newName){var c=this.getCollection(oldName);if(c){c.name=newName}return c};Loki.prototype.listCollections=function(){var i=this.collections.length,colls=[];while(i--){colls.push({name:this.collections[i].name,type:this.collections[i].objType,count:this.collections[i].data.length})}return colls};Loki.prototype.removeCollection=function(collectionName){var i,len=this.collections.length;for(i=0;i<len;i+=1){if(this.collections[i].name===collectionName){var tmpcol=new Collection(collectionName,{});var curcol=this.collections[i];for(var prop in curcol){if(curcol.hasOwnProperty(prop)&&tmpcol.hasOwnProperty(prop)){curcol[prop]=tmpcol[prop]}}this.collections.splice(i,1);return}}};Loki.prototype.getName=function(){return this.name};Loki.prototype.serializeReplacer=function(key,value){switch(key){case"autosaveHandle":case"persistenceAdapter":case"constraints":case"ttl":return null;case"throttledSavePending":case"throttledCallbacks":return undefined;default:return value}};Loki.prototype.serialize=function(options){options=options||{};if(!options.hasOwnProperty("serializationMethod")){options.serializationMethod=this.options.serializationMethod}switch(options.serializationMethod){case"normal":return JSON.stringify(this,this.serializeReplacer);case"pretty":return JSON.stringify(this,this.serializeReplacer,2);case"destructured":return this.serializeDestructured();default:return JSON.stringify(this,this.serializeReplacer)}};Loki.prototype.toJson=Loki.prototype.serialize;Loki.prototype.serializeDestructured=function(options){var idx,sidx,result,resultlen;var reconstruct=[];var dbcopy;options=options||{};if(!options.hasOwnProperty("partitioned")){options.partitioned=false}if(!options.hasOwnProperty("delimited")){options.delimited=true}if(!options.hasOwnProperty("delimiter")){options.delimiter=this.options.destructureDelimiter}if(options.partitioned===true&&options.hasOwnProperty("partition")&&options.partition>=0){return this.serializeCollection({delimited:options.delimited,delimiter:options.delimiter,collectionIndex:options.partition})}dbcopy=new Loki(this.filename);dbcopy.loadJSONObject(this);for(idx=0;idx<dbcopy.collections.length;idx++){dbcopy.collections[idx].data=[]}if(options.partitioned===true&&options.partition===-1){return dbcopy.serialize({serializationMethod:"normal"})}reconstruct.push(dbcopy.serialize({serializationMethod:"normal"}));dbcopy=null;for(idx=0;idx<this.collections.length;idx++){result=this.serializeCollection({delimited:options.delimited,delimiter:options.delimiter,collectionIndex:idx});if(options.partitioned===false&&options.delimited===false){if(!Array.isArray(result)){throw new Error("a nondelimited, non partitioned collection serialization did not return an expected array")}resultlen=result.length;for(sidx=0;sidx<resultlen;sidx++){reconstruct.push(result[sidx]);result[sidx]=null}reconstruct.push("")}else{reconstruct.push(result)}}if(options.partitioned){if(options.delimited){return reconstruct}else{return reconstruct}}else{if(options.delimited){reconstruct.push("");return reconstruct.join(options.delimiter)}else{reconstruct.push("");return reconstruct}}reconstruct.push("");return reconstruct.join(delim)};Loki.prototype.serializeCollection=function(options){var doccount,docidx,resultlines=[];options=options||{};if(!options.hasOwnProperty("delimited")){options.delimited=true}if(!options.hasOwnProperty("collectionIndex")){throw new Error("serializeCollection called without 'collectionIndex' option")}doccount=this.collections[options.collectionIndex].data.length;resultlines=[];for(docidx=0;docidx<doccount;docidx++){resultlines.push(JSON.stringify(this.collections[options.collectionIndex].data[docidx]))}if(options.delimited){resultlines.push("");return resultlines.join(options.delimiter)}else{return resultlines}};Loki.prototype.deserializeDestructured=function(destructuredSource,options){var workarray=[];var len,cdb;var idx,collIndex=0,collCount,lineIndex=1,done=false;var currLine,currObject;options=options||{};if(!options.hasOwnProperty("partitioned")){options.partitioned=false}if(!options.hasOwnProperty("delimited")){options.delimited=true}if(!options.hasOwnProperty("delimiter")){options.delimiter=this.options.destructureDelimiter}if(options.partitioned){if(options.hasOwnProperty("partition")){if(options.partition===-1){cdb=JSON.parse(destructuredSource[0]);return cdb}return this.deserializeCollection(destructuredSource[options.partition+1],options)}cdb=JSON.parse(destructuredSource[0]);collCount=cdb.collections.length;for(collIndex=0;collIndex<collCount;collIndex++){cdb.collections[collIndex].data=this.deserializeCollection(destructuredSource[collIndex+1],options)}return cdb}if(options.delimited){workarray=destructuredSource.split(options.delimiter);destructuredSource=null;len=workarray.length;if(len===0){return null}}else{workarray=destructuredSource}cdb=JSON.parse(workarray[0]);collCount=cdb.collections.length;workarray[0]=null;while(!done){currLine=workarray[lineIndex];if(workarray[lineIndex]===""){if(++collIndex>collCount){done=true}}else{currObject=JSON.parse(workarray[lineIndex]);cdb.collections[collIndex].data.push(currObject)}workarray[lineIndex++]=null}return cdb};Loki.prototype.deserializeCollection=function(destructuredSource,options){var workarray=[];var idx,len;options=options||{};if(!options.hasOwnProperty("partitioned")){options.partitioned=false}if(!options.hasOwnProperty("delimited")){options.delimited=true}if(!options.hasOwnProperty("delimiter")){options.delimiter=this.options.destructureDelimiter}if(options.delimited){workarray=destructuredSource.split(options.delimiter);workarray.pop()}else{workarray=destructuredSource}len=workarray.length;for(idx=0;idx<len;idx++){workarray[idx]=JSON.parse(workarray[idx])}return workarray};Loki.prototype.loadJSON=function(serializedDb,options){var dbObject;if(serializedDb.length===0){dbObject={}}else{switch(this.options.serializationMethod){case"normal":case"pretty":dbObject=JSON.parse(serializedDb);break;case"destructured":dbObject=this.deserializeDestructured(serializedDb);break;default:dbObject=JSON.parse(serializedDb);break}}this.loadJSONObject(dbObject,options)};Loki.prototype.loadJSONObject=function(dbObject,options){var i=0,len=dbObject.collections?dbObject.collections.length:0,coll,copyColl,clen,j,loader,collObj;this.name=dbObject.name;if(dbObject.hasOwnProperty("throttledSaves")&&options&&!options.hasOwnProperty("throttledSaves")){this.throttledSaves=dbObject.throttledSaves}this.collections=[];function makeLoader(coll){var collOptions=options[coll.name];var inflater;if(collOptions.proto){inflater=collOptions.inflate||Utils.copyProperties;return function(data){var collObj=new collOptions.proto;inflater(data,collObj);return collObj}}return collOptions.inflate}for(i;i<len;i+=1){coll=dbObject.collections[i];copyColl=this.addCollection(coll.name,{disableChangesApi:coll.disableChangesApi,disableDeltaChangesApi:coll.disableDeltaChangesApi,disableMeta:coll.disableMeta});copyColl.adaptiveBinaryIndices=coll.hasOwnProperty("adaptiveBinaryIndices")?coll.adaptiveBinaryIndices===true:false;copyColl.transactional=coll.transactional;copyColl.asyncListeners=coll.asyncListeners;copyColl.cloneObjects=coll.cloneObjects;copyColl.cloneMethod=coll.cloneMethod||"parse-stringify";copyColl.autoupdate=coll.autoupdate;copyColl.changes=coll.changes;if(options&&options.retainDirtyFlags===true){copyColl.dirty=coll.dirty}else{copyColl.dirty=false}clen=coll.data.length;j=0;if(options&&options.hasOwnProperty(coll.name)){loader=makeLoader(coll);for(j;j<clen;j++){collObj=loader(coll.data[j]);copyColl.data[j]=collObj;copyColl.addAutoUpdateObserver(collObj)}}else{for(j;j<clen;j++){copyColl.data[j]=coll.data[j];copyColl.addAutoUpdateObserver(copyColl.data[j])}}copyColl.maxId=typeof coll.maxId==="undefined"?0:coll.maxId;copyColl.idIndex=coll.idIndex;if(typeof coll.binaryIndices!=="undefined"){copyColl.binaryIndices=coll.binaryIndices}if(typeof coll.transforms!=="undefined"){copyColl.transforms=coll.transforms}copyColl.ensureId();copyColl.uniqueNames=[];if(coll.hasOwnProperty("uniqueNames")){copyColl.uniqueNames=coll.uniqueNames;for(j=0;j<copyColl.uniqueNames.length;j++){copyColl.ensureUniqueIndex(copyColl.uniqueNames[j])}}if(typeof coll.DynamicViews==="undefined")continue;for(var idx=0;idx<coll.DynamicViews.length;idx++){var colldv=coll.DynamicViews[idx];var dv=copyColl.addDynamicView(colldv.name,colldv.options);dv.resultdata=colldv.resultdata;dv.resultsdirty=colldv.resultsdirty;dv.filterPipeline=colldv.filterPipeline;dv.sortCriteria=colldv.sortCriteria;dv.sortFunction=null;dv.sortDirty=colldv.sortDirty;dv.resultset.filteredrows=colldv.resultset.filteredrows;dv.resultset.filterInitialized=colldv.resultset.filterInitialized;dv.rematerialize({removeWhereFilters:true})}if(dbObject.databaseVersion<1.5){copyColl.ensureAllIndexes(true);copyColl.dirty=true}}};Loki.prototype.close=function(callback){if(this.autosave){this.autosaveDisable();if(this.autosaveDirty()){this.saveDatabase(callback);callback=undefined}}if(callback){this.on("close",callback)}this.emit("close")};Loki.prototype.generateChangesNotification=function(arrayOfCollectionNames){function getCollName(coll){return coll.name}var changes=[],selectedCollections=arrayOfCollectionNames||this.collections.map(getCollName);this.collections.forEach(function(coll){if(selectedCollections.indexOf(getCollName(coll))!==-1){changes=changes.concat(coll.getChanges())}});return changes};Loki.prototype.serializeChanges=function(collectionNamesArray){return JSON.stringify(this.generateChangesNotification(collectionNamesArray))};Loki.prototype.clearChanges=function(){this.collections.forEach(function(coll){if(coll.flushChanges){coll.flushChanges()}})};function LokiMemoryAdapter(options){this.hashStore={};this.options=options||{};if(!this.options.hasOwnProperty("asyncResponses")){this.options.asyncResponses=false}if(!this.options.hasOwnProperty("asyncTimeout")){this.options.asyncTimeout=50}}LokiMemoryAdapter.prototype.loadDatabase=function(dbname,callback){var self=this;if(this.options.asyncResponses){setTimeout(function(){if(self.hashStore.hasOwnProperty(dbname)){callback(self.hashStore[dbname].value)}else{callback(null)}},this.options.asyncTimeout)}else{if(this.hashStore.hasOwnProperty(dbname)){callback(this.hashStore[dbname].value)}else{callback(null)}}};LokiMemoryAdapter.prototype.saveDatabase=function(dbname,dbstring,callback){var self=this;var saveCount;if(this.options.asyncResponses){setTimeout(function(){saveCount=self.hashStore.hasOwnProperty(dbname)?self.hashStore[dbname].savecount:0;self.hashStore[dbname]={savecount:saveCount+1,lastsave:new Date,value:dbstring};callback()},this.options.asyncTimeout)}else{saveCount=this.hashStore.hasOwnProperty(dbname)?this.hashStore[dbname].savecount:0;this.hashStore[dbname]={savecount:saveCount+1,lastsave:new Date,value:dbstring};callback()}};LokiMemoryAdapter.prototype.deleteDatabase=function(dbname,callback){if(this.hashStore.hasOwnProperty(dbname)){delete this.hashStore[dbname]}if(typeof callback==="function"){callback()}};function LokiPartitioningAdapter(adapter,options){this.mode="reference";this.adapter=null;this.options=options||{};this.dbref=null;this.dbname="";this.pageIterator={};if(adapter){if(adapter.mode==="reference"){throw new Error("LokiPartitioningAdapter cannot be instantiated with a reference mode adapter")}else{this.adapter=adapter}}else{throw new Error("LokiPartitioningAdapter requires a (non-reference mode) adapter on construction")}if(!this.options.hasOwnProperty("paging")){this.options.paging=false}if(!this.options.hasOwnProperty("pageSize")){this.options.pageSize=25*1024*1024}if(!this.options.hasOwnProperty("delimiter")){this.options.delimiter="$<\n"}}LokiPartitioningAdapter.prototype.loadDatabase=function(dbname,callback){var self=this;this.dbname=dbname;this.dbref=new Loki(dbname);this.adapter.loadDatabase(dbname,function(result){if(!result){callback(result);return}if(typeof result!=="string"){callback(new Error("LokiPartitioningAdapter received an unexpected response from inner adapter loadDatabase()"))}var db=JSON.parse(result);self.dbref.loadJSONObject(db);db=null;var clen=self.dbref.collections.length;if(self.dbref.collections.length===0){callback(self.dbref);return}self.pageIterator={collection:0,pageIndex:0};self.loadNextPartition(0,function(){callback(self.dbref)})})};LokiPartitioningAdapter.prototype.loadNextPartition=function(partition,callback){var keyname=this.dbname+"."+partition;var self=this;if(this.options.paging===true){this.pageIterator.pageIndex=0;this.loadNextPage(callback);return}this.adapter.loadDatabase(keyname,function(result){var data=self.dbref.deserializeCollection(result,{delimited:true,collectionIndex:partition});self.dbref.collections[partition].data=data;if(++partition<self.dbref.collections.length){self.loadNextPartition(partition,callback)}else{callback()}})};LokiPartitioningAdapter.prototype.loadNextPage=function(callback){var keyname=this.dbname+"."+this.pageIterator.collection+"."+this.pageIterator.pageIndex;var self=this;this.adapter.loadDatabase(keyname,function(result){var data=result.split(self.options.delimiter);result="";var dlen=data.length;var idx;var isLastPage=data[dlen-1]==="";if(isLastPage){data.pop();dlen=data.length;if(data[dlen-1]===""&&dlen===1){data.pop();dlen=data.length}}for(idx=0;idx<dlen;idx++){self.dbref.collections[self.pageIterator.collection].data.push(JSON.parse(data[idx]));data[idx]=null}data=[];if(isLastPage){if(++self.pageIterator.collection<self.dbref.collections.length){self.loadNextPartition(self.pageIterator.collection,callback)}else{callback()}}else{self.pageIterator.pageIndex++;self.loadNextPage(callback)}})};LokiPartitioningAdapter.prototype.exportDatabase=function(dbname,dbref,callback){var self=this;var idx,clen=dbref.collections.length;this.dbref=dbref;this.dbname=dbname;this.dirtyPartitions=[-1];for(idx=0;idx<clen;idx++){if(dbref.collections[idx].dirty){this.dirtyPartitions.push(idx)}}this.saveNextPartition(function(err){callback(err)})};LokiPartitioningAdapter.prototype.saveNextPartition=function(callback){var self=this;var partition=this.dirtyPartitions.shift();var keyname=this.dbname+(partition===-1?"":"."+partition);if(this.options.paging&&partition!==-1){this.pageIterator={collection:partition,docIndex:0,pageIndex:0};this.saveNextPage(function(err){if(self.dirtyPartitions.length===0){callback(err)}else{self.saveNextPartition(callback)}});return}var result=this.dbref.serializeDestructured({partitioned:true,delimited:true,partition:partition});this.adapter.saveDatabase(keyname,result,function(err){if(err){callback(err);return}if(self.dirtyPartitions.length===0){callback(null)}else{self.saveNextPartition(callback)}})};LokiPartitioningAdapter.prototype.saveNextPage=function(callback){var self=this;var coll=this.dbref.collections[this.pageIterator.collection];var keyname=this.dbname+"."+this.pageIterator.collection+"."+this.pageIterator.pageIndex;var pageLen=0,cdlen=coll.data.length,delimlen=this.options.delimiter.length;var serializedObject="",pageBuilder="";var doneWithPartition=false,doneWithPage=false;var pageSaveCallback=function(err){pageBuilder="";if(err){callback(err)}if(doneWithPartition){callback(null)}else{self.pageIterator.pageIndex++;self.saveNextPage(callback)}};if(coll.data.length===0){doneWithPartition=true}while(true){if(!doneWithPartition){serializedObject=JSON.stringify(coll.data[this.pageIterator.docIndex]);pageBuilder+=serializedObject;pageLen+=serializedObject.length;if(++this.pageIterator.docIndex>=cdlen)doneWithPartition=true}if(pageLen>=this.options.pageSize)doneWithPage=true;if(!doneWithPage||doneWithPartition){pageBuilder+=this.options.delimiter;pageLen+=delimlen}if(doneWithPartition||doneWithPage){this.adapter.saveDatabase(keyname,pageBuilder,pageSaveCallback);return}}};function LokiFsAdapter(){try{this.fs=require("fs")}catch(e){this.fs=null}}LokiFsAdapter.prototype.loadDatabase=function loadDatabase(dbname,callback){var self=this;this.fs.stat(dbname,function(err,stats){if(!err&&stats.isFile()){self.fs.readFile(dbname,{encoding:"utf8"},function readFileCallback(err,data){if(err){callback(new Error(err))}else{callback(data)}})}else{callback(null)}})};LokiFsAdapter.prototype.saveDatabase=function saveDatabase(dbname,dbstring,callback){var self=this;var tmpdbname=dbname+"~";this.fs.writeFile(tmpdbname,dbstring,function writeFileCallback(err){if(err){callback(new Error(err))}else{self.fs.rename(tmpdbname,dbname,callback)}})};LokiFsAdapter.prototype.deleteDatabase=function deleteDatabase(dbname,callback){this.fs.unlink(dbname,function deleteDatabaseCallback(err){if(err){callback(new Error(err))}else{callback()}})};function LokiLocalStorageAdapter(){}LokiLocalStorageAdapter.prototype.loadDatabase=function loadDatabase(dbname,callback){if(localStorageAvailable()){callback(localStorage.getItem(dbname))}else{callback(new Error("localStorage is not available"))}};LokiLocalStorageAdapter.prototype.saveDatabase=function saveDatabase(dbname,dbstring,callback){if(localStorageAvailable()){localStorage.setItem(dbname,dbstring);callback(null)}else{callback(new Error("localStorage is not available"))}}
|
|
;LokiLocalStorageAdapter.prototype.deleteDatabase=function deleteDatabase(dbname,callback){if(localStorageAvailable()){localStorage.removeItem(dbname);callback(null)}else{callback(new Error("localStorage is not available"))}};Loki.prototype.throttledSaveDrain=function(callback,options){var self=this;var now=(new Date).getTime();if(!this.throttledSaves){callback(true)}options=options||{};if(!options.hasOwnProperty("recursiveWait")){options.recursiveWait=true}if(!options.hasOwnProperty("recursiveWaitLimit")){options.recursiveWaitLimit=false}if(!options.hasOwnProperty("recursiveWaitLimitDuration")){options.recursiveWaitLimitDuration=2e3}if(!options.hasOwnProperty("started")){options.started=(new Date).getTime()}if(this.throttledSaves&&this.throttledSavePending){if(options.recursiveWait){this.throttledCallbacks.push(function(){if(self.throttledSavePending){if(options.recursiveWaitLimit&&now-options.started>options.recursiveWaitLimitDuration){callback(false);return}self.throttledSaveDrain(callback,options);return}else{callback(true);return}})}else{this.throttledCallbacks.push(callback);return}}else{callback(true)}};Loki.prototype.loadDatabaseInternal=function(options,callback){var cFun=callback||function(err,data){if(err){throw err}},self=this;if(this.persistenceAdapter!==null){this.persistenceAdapter.loadDatabase(this.filename,function loadDatabaseCallback(dbString){if(typeof dbString==="string"){var parseSuccess=false;try{self.loadJSON(dbString,options||{});parseSuccess=true}catch(err){cFun(err)}if(parseSuccess){cFun(null);self.emit("loaded","database "+self.filename+" loaded")}}else{if(!dbString){cFun(null);self.emit("loaded","empty database "+self.filename+" loaded");return}if(dbString instanceof Error){cFun(dbString);return}if(typeof dbString==="object"){self.loadJSONObject(dbString,options||{});cFun(null);self.emit("loaded","database "+self.filename+" loaded");return}cFun("unexpected adapter response : "+dbString)}})}else{cFun(new Error("persistenceAdapter not configured"))}};Loki.prototype.loadDatabase=function(options,callback){var self=this;if(!this.throttledSaves){this.loadDatabaseInternal(options,callback);return}this.throttledSaveDrain(function(success){if(success){self.throttledSavePending=true;self.loadDatabaseInternal(options,function(err){if(self.throttledCallbacks.length===0){self.throttledSavePending=false}else{self.saveDatabase()}if(typeof callback==="function"){callback(err)}});return}else{if(typeof callback==="function"){callback(new Error("Unable to pause save throttling long enough to read database"))}}},options)};Loki.prototype.saveDatabaseInternal=function(callback){var cFun=callback||function(err){if(err){throw err}return},self=this;if(this.persistenceAdapter!==null){if(this.persistenceAdapter.mode==="reference"&&typeof this.persistenceAdapter.exportDatabase==="function"){this.persistenceAdapter.exportDatabase(this.filename,this.copy({removeNonSerializable:true}),function exportDatabaseCallback(err){self.autosaveClearFlags();cFun(err)})}else{self.autosaveClearFlags();this.persistenceAdapter.saveDatabase(this.filename,self.serialize(),function saveDatabasecallback(err){cFun(err)})}}else{cFun(new Error("persistenceAdapter not configured"))}};Loki.prototype.saveDatabase=function(callback){if(!this.throttledSaves){this.saveDatabaseInternal(callback);return}if(this.throttledSavePending){this.throttledCallbacks.push(callback);return}var localCallbacks=this.throttledCallbacks;this.throttledCallbacks=[];localCallbacks.unshift(callback);this.throttledSavePending=true;var self=this;this.saveDatabaseInternal(function(err){self.throttledSavePending=false;localCallbacks.forEach(function(pcb){if(typeof pcb==="function"){setTimeout(function(){pcb(err)},1)}});if(self.throttledCallbacks.length>0){self.saveDatabase()}})};Loki.prototype.save=Loki.prototype.saveDatabase;Loki.prototype.deleteDatabase=function(options,callback){var cFun=callback||function(err,data){if(err){throw err}};if(typeof options==="function"&&!callback){cFun=options}if(this.persistenceAdapter!==null){this.persistenceAdapter.deleteDatabase(this.filename,function deleteDatabaseCallback(err){cFun(err)})}else{cFun(new Error("persistenceAdapter not configured"))}};Loki.prototype.autosaveDirty=function(){for(var idx=0;idx<this.collections.length;idx++){if(this.collections[idx].dirty){return true}}return false};Loki.prototype.autosaveClearFlags=function(){for(var idx=0;idx<this.collections.length;idx++){this.collections[idx].dirty=false}};Loki.prototype.autosaveEnable=function(options,callback){this.autosave=true;var delay=5e3,self=this;if(typeof this.autosaveInterval!=="undefined"&&this.autosaveInterval!==null){delay=this.autosaveInterval}this.autosaveHandle=setInterval(function autosaveHandleInterval(){if(self.autosaveDirty()){self.saveDatabase(callback)}},delay)};Loki.prototype.autosaveDisable=function(){if(typeof this.autosaveHandle!=="undefined"&&this.autosaveHandle!==null){clearInterval(this.autosaveHandle);this.autosaveHandle=null}};function Resultset(collection,options){options=options||{};this.collection=collection;this.filteredrows=[];this.filterInitialized=false;return this}Resultset.prototype.reset=function(){if(this.filteredrows.length>0){this.filteredrows=[]}this.filterInitialized=false;return this};Resultset.prototype.toJSON=function(){var copy=this.copy();copy.collection=null;return copy};Resultset.prototype.limit=function(qty){if(!this.filterInitialized&&this.filteredrows.length===0){this.filteredrows=this.collection.prepareFullDocIndex()}var rscopy=new Resultset(this.collection);rscopy.filteredrows=this.filteredrows.slice(0,qty);rscopy.filterInitialized=true;return rscopy};Resultset.prototype.offset=function(pos){if(!this.filterInitialized&&this.filteredrows.length===0){this.filteredrows=this.collection.prepareFullDocIndex()}var rscopy=new Resultset(this.collection);rscopy.filteredrows=this.filteredrows.slice(pos);rscopy.filterInitialized=true;return rscopy};Resultset.prototype.copy=function(){var result=new Resultset(this.collection);if(this.filteredrows.length>0){result.filteredrows=this.filteredrows.slice()}result.filterInitialized=this.filterInitialized;return result};Resultset.prototype.branch=Resultset.prototype.copy;Resultset.prototype.transform=function(transform,parameters){var idx,step,rs=this;if(typeof transform==="string"){if(this.collection.transforms.hasOwnProperty(transform)){transform=this.collection.transforms[transform]}}if(typeof transform!=="object"||!Array.isArray(transform)){throw new Error("Invalid transform")}if(typeof parameters!=="undefined"){transform=Utils.resolveTransformParams(transform,parameters)}for(idx=0;idx<transform.length;idx++){step=transform[idx];switch(step.type){case"find":rs.find(step.value);break;case"where":rs.where(step.value);break;case"simplesort":rs.simplesort(step.property,step.desc||step.options);break;case"compoundsort":rs.compoundsort(step.value);break;case"sort":rs.sort(step.value);break;case"limit":rs=rs.limit(step.value);break;case"offset":rs=rs.offset(step.value);break;case"map":rs=rs.map(step.value,step.dataOptions);break;case"eqJoin":rs=rs.eqJoin(step.joinData,step.leftJoinKey,step.rightJoinKey,step.mapFun,step.dataOptions);break;case"mapReduce":rs=rs.mapReduce(step.mapFunction,step.reduceFunction);break;case"update":rs.update(step.value);break;case"remove":rs.remove();break;default:break}}return rs};Resultset.prototype.sort=function(comparefun){if(!this.filterInitialized&&this.filteredrows.length===0){this.filteredrows=this.collection.prepareFullDocIndex()}var wrappedComparer=function(userComparer,data){return function(a,b){return userComparer(data[a],data[b])}}(comparefun,this.collection.data);this.filteredrows.sort(wrappedComparer);return this};Resultset.prototype.simplesort=function(propname,options){var eff,targetEff=10,dc=this.collection.data.length,frl=this.filteredrows.length,hasBinaryIndex=this.collection.binaryIndices.hasOwnProperty(propname);if(typeof options==="undefined"||options===false){options={desc:false}}if(options===true){options={desc:true}}if(frl===0){if(this.filterInitialized){return this}if(this.collection.binaryIndices.hasOwnProperty(propname)){this.collection.ensureIndex(propname);this.filteredrows=this.collection.binaryIndices[propname].values.slice(0);if(options.desc){this.filteredrows.reverse()}return this}else{this.filteredrows=this.collection.prepareFullDocIndex()}}else{if(!options.disableIndexIntersect&&hasBinaryIndex){eff=dc/frl;if(options.useJavascriptSorting){targetEff=6}if(eff<=targetEff||options.forceIndexIntersect){var idx,fr=this.filteredrows;var io={};for(idx=0;idx<frl;idx++){io[fr[idx]]=true}var pv=this.collection.binaryIndices[propname].values;this.filteredrows=pv.filter(function(n){return io[n]});if(options.desc){this.filteredrows.reverse()}return this}}}if(options.useJavascriptSorting){return this.sort(function(obj1,obj2){if(obj1[propname]===obj2[propname])return 0;if(obj1[propname]>obj2[propname])return 1;if(obj1[propname]<obj2[propname])return-1})}var wrappedComparer=function(prop,desc,data){var val1,val2,arr;return function(a,b){if(~prop.indexOf(".")){arr=prop.split(".");val1=arr.reduce(function(obj,i){return obj&&obj[i]||undefined},data[a]);val2=arr.reduce(function(obj,i){return obj&&obj[i]||undefined},data[b])}else{val1=data[a][prop];val2=data[b][prop]}return sortHelper(val1,val2,desc)}}(propname,options.desc,this.collection.data);this.filteredrows.sort(wrappedComparer);return this};Resultset.prototype.compoundsort=function(properties){if(properties.length===0){throw new Error("Invalid call to compoundsort, need at least one property")}var prop;if(properties.length===1){prop=properties[0];if(Array.isArray(prop)){return this.simplesort(prop[0],prop[1])}return this.simplesort(prop,false)}for(var i=0,len=properties.length;i<len;i+=1){prop=properties[i];if(!Array.isArray(prop)){properties[i]=[prop,false]}}if(!this.filterInitialized&&this.filteredrows.length===0){this.filteredrows=this.collection.prepareFullDocIndex()}var wrappedComparer=function(props,data){return function(a,b){return compoundeval(props,data[a],data[b])}}(properties,this.collection.data);this.filteredrows.sort(wrappedComparer);return this};Resultset.prototype.findOr=function(expressionArray){var fr=null,fri=0,frlen=0,docset=[],idxset=[],idx=0,origCount=this.count();for(var ei=0,elen=expressionArray.length;ei<elen;ei++){fr=this.branch().find(expressionArray[ei]).filteredrows;frlen=fr.length;if(frlen===origCount){return this}for(fri=0;fri<frlen;fri++){idx=fr[fri];if(idxset[idx]===undefined){idxset[idx]=true;docset.push(idx)}}}this.filteredrows=docset;this.filterInitialized=true;return this};Resultset.prototype.$or=Resultset.prototype.findOr;Resultset.prototype.findAnd=function(expressionArray){for(var i=0,len=expressionArray.length;i<len;i++){if(this.count()===0){return this}this.find(expressionArray[i])}return this};Resultset.prototype.$and=Resultset.prototype.findAnd;Resultset.prototype.find=function(query,firstOnly){if(this.collection.data.length===0){this.filteredrows=[];this.filterInitialized=true;return this}var queryObject=query||"getAll",p,property,queryObjectOp,obj,operator,value,key,searchByIndex=false,result=[],filters=[],index=null;firstOnly=firstOnly||false;if(typeof queryObject==="object"){for(p in queryObject){obj={};obj[p]=queryObject[p];filters.push(obj);if(hasOwnProperty.call(queryObject,p)){property=p;queryObjectOp=queryObject[p]}}if(filters.length>1){return this.find({$and:filters},firstOnly)}}if(!property||queryObject==="getAll"){if(firstOnly){this.filteredrows=this.collection.data.length>0?[0]:[];this.filterInitialized=true}return this}if(property==="$and"||property==="$or"){this[property](queryObjectOp);if(firstOnly&&this.filteredrows.length>1){this.filteredrows=this.filteredrows.slice(0,1)}return this}if(queryObjectOp===null||(typeof queryObjectOp!=="object"||queryObjectOp instanceof Date)){operator="$eq";value=queryObjectOp}else if(typeof queryObjectOp==="object"){for(key in queryObjectOp){if(hasOwnProperty.call(queryObjectOp,key)){operator=key;value=queryObjectOp[key];break}}}else{throw new Error("Do not know what you want to do.")}if(operator==="$regex"){if(Array.isArray(value)){value=new RegExp(value[0],value[1])}else if(!(value instanceof RegExp)){value=new RegExp(value)}}var usingDotNotation=property.indexOf(".")!==-1;var doIndexCheck=!usingDotNotation&&!this.filterInitialized;if(doIndexCheck&&this.collection.binaryIndices[property]&&indexedOps[operator]){if(this.collection.adaptiveBinaryIndices!==true){this.collection.ensureIndex(property)}searchByIndex=true;index=this.collection.binaryIndices[property]}var fun=LokiOps[operator];var t=this.collection.data;var i=0,len=0;var filter,rowIdx=0;if(this.filterInitialized){filter=this.filteredrows;len=filter.length;if(usingDotNotation){property=property.split(".");for(i=0;i<len;i++){rowIdx=filter[i];if(dotSubScan(t[rowIdx],property,fun,value)){result.push(rowIdx)}}}else{for(i=0;i<len;i++){rowIdx=filter[i];if(fun(t[rowIdx][property],value)){result.push(rowIdx)}}}}else{if(!searchByIndex){len=t.length;if(usingDotNotation){property=property.split(".");for(i=0;i<len;i++){if(dotSubScan(t[i],property,fun,value)){result.push(i);if(firstOnly){this.filteredrows=result;this.filterInitialized=true;return this}}}}else{for(i=0;i<len;i++){if(fun(t[i][property],value)){result.push(i);if(firstOnly){this.filteredrows=result;this.filterInitialized=true;return this}}}}}else{var segm=this.collection.calculateRange(operator,property,value);if(operator!=="$in"){for(i=segm[0];i<=segm[1];i++){if(indexedOps[operator]!==true){if(indexedOps[operator](t[index.values[i]][property],value)){result.push(index.values[i]);if(firstOnly){this.filteredrows=result;this.filterInitialized=true;return this}}}else{result.push(index.values[i]);if(firstOnly){this.filteredrows=result;this.filterInitialized=true;return this}}}}else{for(i=0,len=segm.length;i<len;i++){result.push(index.values[segm[i]]);if(firstOnly){this.filteredrows=result;this.filterInitialized=true;return this}}}}}this.filteredrows=result;this.filterInitialized=true;return this};Resultset.prototype.where=function(fun){var viewFunction,result=[];if("function"===typeof fun){viewFunction=fun}else{throw new TypeError("Argument is not a stored view or a function")}try{if(this.filterInitialized){var j=this.filteredrows.length;while(j--){if(viewFunction(this.collection.data[this.filteredrows[j]])===true){result.push(this.filteredrows[j])}}this.filteredrows=result;return this}else{var k=this.collection.data.length;while(k--){if(viewFunction(this.collection.data[k])===true){result.push(k)}}this.filteredrows=result;this.filterInitialized=true;return this}}catch(err){throw err}};Resultset.prototype.count=function(){if(this.filterInitialized){return this.filteredrows.length}return this.collection.count()};Resultset.prototype.data=function(options){var result=[],data=this.collection.data,obj,len,i,method;options=options||{};if(options.removeMeta&&!options.forceClones){options.forceClones=true;options.forceCloneMethod=options.forceCloneMethod||"shallow"}if(!this.collection.disableDeltaChangesApi){options.forceClones=true;options.forceCloneMethod="parse-stringify"}if(!this.filterInitialized){if(this.filteredrows.length===0){if(this.collection.cloneObjects||options.forceClones){len=data.length;method=options.forceCloneMethod||this.collection.cloneMethod;for(i=0;i<len;i++){obj=clone(data[i],method);if(options.removeMeta){delete obj.$loki;delete obj.meta}result.push(obj)}return result}else{return data.slice()}}else{this.filterInitialized=true}}var fr=this.filteredrows;len=fr.length;if(this.collection.cloneObjects||options.forceClones){method=options.forceCloneMethod||this.collection.cloneMethod;for(i=0;i<len;i++){obj=clone(data[fr[i]],method);if(options.removeMeta){delete obj.$loki;delete obj.meta}result.push(obj)}}else{for(i=0;i<len;i++){result.push(data[fr[i]])}}return result};Resultset.prototype.update=function(updateFunction){if(typeof updateFunction!=="function"){throw new TypeError("Argument is not a function")}if(!this.filterInitialized&&this.filteredrows.length===0){this.filteredrows=this.collection.prepareFullDocIndex()}var obj,len=this.filteredrows.length,rcd=this.collection.data;for(var idx=0;idx<len;idx++){if(this.collection.cloneObjects||!this.collection.disableDeltaChangesApi){obj=clone(rcd[this.filteredrows[idx]],this.collection.cloneMethod);updateFunction(obj);this.collection.update(obj)}else{updateFunction(rcd[this.filteredrows[idx]]);this.collection.update(rcd[this.filteredrows[idx]])}}return this};Resultset.prototype.remove=function(){if(!this.filterInitialized&&this.filteredrows.length===0){this.filteredrows=this.collection.prepareFullDocIndex()}this.collection.removeBatchByPositions(this.filteredrows);this.filteredrows=[];return this};Resultset.prototype.mapReduce=function(mapFunction,reduceFunction){try{return reduceFunction(this.data().map(mapFunction))}catch(err){throw err}};Resultset.prototype.eqJoin=function(joinData,leftJoinKey,rightJoinKey,mapFun,dataOptions){var leftData=[],leftDataLength,rightData=[],rightDataLength,key,result=[],leftKeyisFunction=typeof leftJoinKey==="function",rightKeyisFunction=typeof rightJoinKey==="function",joinMap={};leftData=this.data(dataOptions);leftDataLength=leftData.length;if(joinData instanceof Collection){rightData=joinData.chain().data(dataOptions)}else if(joinData instanceof Resultset){rightData=joinData.data(dataOptions)}else if(Array.isArray(joinData)){rightData=joinData}else{throw new TypeError("joinData needs to be an array or result set")}rightDataLength=rightData.length;for(var i=0;i<rightDataLength;i++){key=rightKeyisFunction?rightJoinKey(rightData[i]):rightData[i][rightJoinKey];joinMap[key]=rightData[i]}if(!mapFun){mapFun=function(left,right){return{left:left,right:right}}}for(var j=0;j<leftDataLength;j++){key=leftKeyisFunction?leftJoinKey(leftData[j]):leftData[j][leftJoinKey];result.push(mapFun(leftData[j],joinMap[key]||{}))}this.collection=new Collection("joinData");this.collection.insert(result);this.filteredrows=[];this.filterInitialized=false;return this};Resultset.prototype.map=function(mapFun,dataOptions){var data=this.data(dataOptions).map(mapFun);this.collection=new Collection("mappedData");this.collection.insert(data);this.filteredrows=[];this.filterInitialized=false;return this};function DynamicView(collection,name,options){this.collection=collection;this.name=name;this.rebuildPending=false;this.options=options||{};if(!this.options.hasOwnProperty("persistent")){this.options.persistent=false}if(!this.options.hasOwnProperty("sortPriority")){this.options.sortPriority="passive"}if(!this.options.hasOwnProperty("minRebuildInterval")){this.options.minRebuildInterval=1}this.resultset=new Resultset(collection);this.resultdata=[];this.resultsdirty=false;this.cachedresultset=null;this.filterPipeline=[];this.sortFunction=null;this.sortCriteria=null;this.sortCriteriaSimple=null;this.sortDirty=false;this.events={rebuild:[]}}DynamicView.prototype=new LokiEventEmitter;DynamicView.prototype.rematerialize=function(options){var fpl,fpi,idx;options=options||{};this.resultdata=[];this.resultsdirty=true;this.resultset=new Resultset(this.collection);if(this.sortFunction||this.sortCriteria||this.sortCriteriaSimple){this.sortDirty=true}if(options.hasOwnProperty("removeWhereFilters")){fpl=this.filterPipeline.length;fpi=fpl;while(fpi--){if(this.filterPipeline[fpi].type==="where"){if(fpi!==this.filterPipeline.length-1){this.filterPipeline[fpi]=this.filterPipeline[this.filterPipeline.length-1]}this.filterPipeline.length--}}}var ofp=this.filterPipeline;this.filterPipeline=[];fpl=ofp.length;for(idx=0;idx<fpl;idx++){this.applyFind(ofp[idx].val)}this.data();this.emit("rebuild",this);return this};DynamicView.prototype.branchResultset=function(transform,parameters){var rs=this.resultset.branch();if(typeof transform==="undefined"){return rs}return rs.transform(transform,parameters)};DynamicView.prototype.toJSON=function(){var copy=new DynamicView(this.collection,this.name,this.options);copy.resultset=this.resultset;copy.resultdata=[];copy.resultsdirty=true;copy.filterPipeline=this.filterPipeline;copy.sortFunction=this.sortFunction;copy.sortCriteria=this.sortCriteria;copy.sortCriteriaSimple=this.sortCriteriaSimple||null;copy.sortDirty=this.sortDirty;copy.collection=null;return copy};DynamicView.prototype.removeFilters=function(options){options=options||{};this.rebuildPending=false;this.resultset.reset();this.resultdata=[];this.resultsdirty=true;this.cachedresultset=null;this.filterPipeline=[];this.sortFunction=null;this.sortCriteria=null;this.sortCriteriaSimple=null;this.sortDirty=false;if(options.queueSortPhase===true){this.queueSortPhase()}};DynamicView.prototype.applySort=function(comparefun){this.sortFunction=comparefun;this.sortCriteria=null;this.sortCriteriaSimple=null;this.queueSortPhase();return this};DynamicView.prototype.applySimpleSort=function(propname,options){this.sortCriteriaSimple={propname:propname,options:options||false};this.sortCriteria=null;this.sortFunction=null;this.queueSortPhase();return this};DynamicView.prototype.applySortCriteria=function(criteria){this.sortCriteria=criteria;this.sortCriteriaSimple=null;this.sortFunction=null;this.queueSortPhase();return this};DynamicView.prototype.startTransaction=function(){this.cachedresultset=this.resultset.copy();return this};DynamicView.prototype.commit=function(){this.cachedresultset=null;return this};DynamicView.prototype.rollback=function(){this.resultset=this.cachedresultset;if(this.options.persistent){this.resultdata=this.resultset.data();this.emit("rebuild",this)}return this};DynamicView.prototype._indexOfFilterWithId=function(uid){if(typeof uid==="string"||typeof uid==="number"){for(var idx=0,len=this.filterPipeline.length;idx<len;idx+=1){if(uid===this.filterPipeline[idx].uid){return idx}}}return-1};DynamicView.prototype._addFilter=function(filter){this.filterPipeline.push(filter);this.resultset[filter.type](filter.val)};DynamicView.prototype.reapplyFilters=function(){this.resultset.reset();this.cachedresultset=null;if(this.options.persistent){this.resultdata=[];this.resultsdirty=true}var filters=this.filterPipeline;this.filterPipeline=[];for(var idx=0,len=filters.length;idx<len;idx+=1){this._addFilter(filters[idx])}if(this.sortFunction||this.sortCriteria||this.sortCriteriaSimple){this.queueSortPhase()}else{this.queueRebuildEvent()}return this};DynamicView.prototype.applyFilter=function(filter){var idx=this._indexOfFilterWithId(filter.uid);if(idx>=0){this.filterPipeline[idx]=filter;return this.reapplyFilters()}this.cachedresultset=null;if(this.options.persistent){this.resultdata=[];this.resultsdirty=true}this._addFilter(filter);if(this.sortFunction||this.sortCriteria||this.sortCriteriaSimple){this.queueSortPhase()}else{this.queueRebuildEvent()}return this};DynamicView.prototype.applyFind=function(query,uid){this.applyFilter({type:"find",val:query,uid:uid});return this};DynamicView.prototype.applyWhere=function(fun,uid){this.applyFilter({type:"where",val:fun,uid:uid});return this};DynamicView.prototype.removeFilter=function(uid){var idx=this._indexOfFilterWithId(uid);if(idx<0){throw new Error("Dynamic view does not contain a filter with ID: "+uid)}this.filterPipeline.splice(idx,1);this.reapplyFilters();return this};DynamicView.prototype.count=function(){if(this.resultsdirty){this.resultdata=this.resultset.data()}return this.resultset.count()};DynamicView.prototype.data=function(options){if(this.sortDirty||this.resultsdirty){this.performSortPhase({suppressRebuildEvent:true})}return this.options.persistent?this.resultdata:this.resultset.data(options)};DynamicView.prototype.queueRebuildEvent=function(){if(this.rebuildPending){return}this.rebuildPending=true;var self=this;setTimeout(function(){if(self.rebuildPending){self.rebuildPending=false;self.emit("rebuild",self)}},this.options.minRebuildInterval)};DynamicView.prototype.queueSortPhase=function(){if(this.sortDirty){return}this.sortDirty=true;var self=this;if(this.options.sortPriority==="active"){setTimeout(function(){self.performSortPhase()},this.options.minRebuildInterval)}else{this.queueRebuildEvent()}};DynamicView.prototype.performSortPhase=function(options){if(!this.sortDirty&&!this.resultsdirty){return}options=options||{};if(this.sortDirty){if(this.sortFunction){this.resultset.sort(this.sortFunction)}else if(this.sortCriteria){this.resultset.compoundsort(this.sortCriteria)}else if(this.sortCriteriaSimple){this.resultset.simplesort(this.sortCriteriaSimple.propname,this.sortCriteriaSimple.options)}this.sortDirty=false}if(this.options.persistent){this.resultdata=this.resultset.data();this.resultsdirty=false}if(!options.suppressRebuildEvent){this.emit("rebuild",this)}};DynamicView.prototype.evaluateDocument=function(objIndex,isNew){if(!this.resultset.filterInitialized){if(this.options.persistent){this.resultdata=this.resultset.data()}if(this.sortFunction||this.sortCriteria||this.sortCriteriaSimple){this.queueSortPhase()}else{this.queueRebuildEvent()}return}var ofr=this.resultset.filteredrows;var oldPos=isNew?-1:ofr.indexOf(+objIndex);var oldlen=ofr.length;var evalResultset=new Resultset(this.collection);evalResultset.filteredrows=[objIndex];evalResultset.filterInitialized=true;var filter;for(var idx=0,len=this.filterPipeline.length;idx<len;idx++){filter=this.filterPipeline[idx];evalResultset[filter.type](filter.val)}var newPos=evalResultset.filteredrows.length===0?-1:0;if(oldPos===-1&&newPos===-1)return;if(oldPos===-1&&newPos!==-1){ofr.push(objIndex);if(this.options.persistent){this.resultdata.push(this.collection.data[objIndex])}if(this.sortFunction||this.sortCriteria||this.sortCriteriaSimple){this.queueSortPhase()}else{this.queueRebuildEvent()}return}if(oldPos!==-1&&newPos===-1){if(oldPos<oldlen-1){ofr.splice(oldPos,1);if(this.options.persistent){this.resultdata.splice(oldPos,1)}}else{ofr.length=oldlen-1;if(this.options.persistent){this.resultdata.length=oldlen-1}}if(this.sortFunction||this.sortCriteria||this.sortCriteriaSimple){this.queueSortPhase()}else{this.queueRebuildEvent()}return}if(oldPos!==-1&&newPos!==-1){if(this.options.persistent){this.resultdata[oldPos]=this.collection.data[objIndex]}if(this.sortFunction||this.sortCriteria||this.sortCriteriaSimple){this.queueSortPhase()}else{this.queueRebuildEvent()}return}};DynamicView.prototype.removeDocument=function(objIndex){var idx,rmidx,rmlen,rxo={},fxo={};var adjels=[];var drs=this.resultset;var fr=this.resultset.filteredrows;var frlen=fr.length;if(!this.resultset.filterInitialized){if(this.options.persistent){this.resultdata=this.resultset.data()}if(this.sortFunction||this.sortCriteria||this.sortCriteriaSimple){this.queueSortPhase()}else{this.queueRebuildEvent()}return}if(!Array.isArray(objIndex)){objIndex=[objIndex]}rmlen=objIndex.length;for(rmidx=0;rmidx<rmlen;rmidx++){rxo[objIndex[rmidx]]=true}for(idx=0;idx<frlen;idx++){if(rxo[fr[idx]])fxo[idx]=true}if(Object.keys(fxo).length>0){this.resultset.filteredrows=this.resultset.filteredrows.filter(function(di,idx){return!fxo[idx]});if(this.options.persistent){this.resultdata=this.resultdata.filter(function(obj,idx){return!fxo[idx]})}if(this.sortFunction||this.sortCriteria||this.sortCriteriaSimple){this.queueSortPhase()}else{this.queueRebuildEvent()}}var filt=function(idx){return function(di){return di<drs.filteredrows[idx]}};frlen=drs.filteredrows.length;for(idx=0;idx<frlen;idx++){adjels=objIndex.filter(filt(idx));drs.filteredrows[idx]-=adjels.length}};DynamicView.prototype.mapReduce=function(mapFunction,reduceFunction){try{return reduceFunction(this.data().map(mapFunction))}catch(err){throw err}};function Collection(name,options){this.name=name;this.data=[];this.idIndex=[];this.binaryIndices={};this.constraints={unique:{},exact:{}};this.uniqueNames=[];this.transforms={};this.objType=name;this.dirty=true;this.cachedIndex=null;this.cachedBinaryIndex=null;this.cachedData=null;var self=this;options=options||{};if(options.hasOwnProperty("unique")){if(!Array.isArray(options.unique)){options.unique=[options.unique]}options.unique.forEach(function(prop){self.uniqueNames.push(prop);self.constraints.unique[prop]=new UniqueIndex(prop)})}if(options.hasOwnProperty("exact")){options.exact.forEach(function(prop){self.constraints.exact[prop]=new ExactIndex(prop)})}this.adaptiveBinaryIndices=options.hasOwnProperty("adaptiveBinaryIndices")?options.adaptiveBinaryIndices:true;this.transactional=options.hasOwnProperty("transactional")?options.transactional:false;this.cloneObjects=options.hasOwnProperty("clone")?options.clone:false;this.cloneMethod=options.hasOwnProperty("cloneMethod")?options.cloneMethod:"parse-stringify";this.asyncListeners=options.hasOwnProperty("asyncListeners")?options.asyncListeners:false;this.disableMeta=options.hasOwnProperty("disableMeta")?options.disableMeta:false;this.disableChangesApi=options.hasOwnProperty("disableChangesApi")?options.disableChangesApi:true;this.disableDeltaChangesApi=options.hasOwnProperty("disableDeltaChangesApi")?options.disableDeltaChangesApi:true;if(this.disableChangesApi){this.disableDeltaChangesApi=true}this.autoupdate=options.hasOwnProperty("autoupdate")?options.autoupdate:false;this.serializableIndices=options.hasOwnProperty("serializableIndices")?options.serializableIndices:true;this.ttl={age:null,ttlInterval:null,daemon:null};this.setTTL(options.ttl||-1,options.ttlInterval);this.maxId=0;this.DynamicViews=[];this.events={insert:[],update:[],"pre-insert":[],"pre-update":[],close:[],flushbuffer:[],error:[],delete:[],warning:[]};this.changes=[];this.ensureId();var indices=[];if(options&&options.indices){if(Object.prototype.toString.call(options.indices)==="[object Array]"){indices=options.indices}else if(typeof options.indices==="string"){indices=[options.indices]}else{throw new TypeError("Indices needs to be a string or an array of strings")}}for(var idx=0;idx<indices.length;idx++){this.ensureIndex(indices[idx])}function observerCallback(changes){var changedObjects=typeof Set==="function"?new Set:[];if(!changedObjects.add)changedObjects.add=function(object){if(this.indexOf(object)===-1)this.push(object);return this};changes.forEach(function(change){changedObjects.add(change.object)});changedObjects.forEach(function(object){if(!hasOwnProperty.call(object,"$loki"))return self.removeAutoUpdateObserver(object);try{self.update(object)}catch(err){}})}this.observerCallback=observerCallback;function getChangeDelta(obj,old){if(old){return getObjectDelta(old,obj)}else{return JSON.parse(JSON.stringify(obj))}}this.getChangeDelta=getChangeDelta;function getObjectDelta(oldObject,newObject){var propertyNames=newObject!==null&&typeof newObject==="object"?Object.keys(newObject):null;if(propertyNames&&propertyNames.length&&["string","boolean","number"].indexOf(typeof newObject)<0){var delta={};for(var i=0;i<propertyNames.length;i++){var propertyName=propertyNames[i];if(newObject.hasOwnProperty(propertyName)){if(!oldObject.hasOwnProperty(propertyName)||self.uniqueNames.indexOf(propertyName)>=0||propertyName=="$loki"||propertyName=="meta"){delta[propertyName]=newObject[propertyName]}else{var propertyDelta=getObjectDelta(oldObject[propertyName],newObject[propertyName]);if(typeof propertyDelta!=="undefined"&&propertyDelta!={}){delta[propertyName]=propertyDelta}}}}return Object.keys(delta).length===0?undefined:delta}else{return oldObject===newObject?undefined:newObject}}this.getObjectDelta=getObjectDelta;function flushChanges(){self.changes=[]}this.getChanges=function(){return self.changes};this.flushChanges=flushChanges;this.setChangesApi=function(enabled){self.disableChangesApi=!enabled;if(!enabled){self.disableDeltaChangesApi=false}};this.on("delete",function deleteCallback(obj){if(!self.disableChangesApi){self.createChange(self.name,"R",obj)}});this.on("warning",function(warning){self.console.warn(warning)});flushChanges()}Collection.prototype=new LokiEventEmitter;Collection.prototype.createChange=function(name,op,obj,old){this.changes.push({name:name,operation:op,
|
|
obj:op=="U"&&!this.disableDeltaChangesApi?this.getChangeDelta(obj,old):JSON.parse(JSON.stringify(obj))})};Collection.prototype.insertMeta=function(obj){var len,idx;if(this.disableMeta||!obj){return}if(Array.isArray(obj)){len=obj.length;for(idx=0;idx<len;idx++){if(!obj[idx].hasOwnProperty("meta")){obj[idx].meta={}}obj[idx].meta.created=(new Date).getTime();obj[idx].meta.revision=0}return}if(!obj.meta){obj.meta={}}obj.meta.created=(new Date).getTime();obj.meta.revision=0};Collection.prototype.updateMeta=function(obj){if(this.disableMeta||!obj){return}obj.meta.updated=(new Date).getTime();obj.meta.revision+=1};Collection.prototype.createInsertChange=function(obj){this.createChange(this.name,"I",obj)};Collection.prototype.createUpdateChange=function(obj,old){this.createChange(this.name,"U",obj,old)};Collection.prototype.insertMetaWithChange=function(obj){this.insertMeta(obj);this.createInsertChange(obj)};Collection.prototype.updateMetaWithChange=function(obj,old){this.updateMeta(obj);this.createUpdateChange(obj,old)};Collection.prototype.console={log:function(){},warn:function(){},error:function(){}};Collection.prototype.addAutoUpdateObserver=function(object){if(!this.autoupdate||typeof Object.observe!=="function")return;Object.observe(object,this.observerCallback,["add","update","delete","reconfigure","setPrototype"])};Collection.prototype.removeAutoUpdateObserver=function(object){if(!this.autoupdate||typeof Object.observe!=="function")return;Object.unobserve(object,this.observerCallback)};Collection.prototype.addTransform=function(name,transform){if(this.transforms.hasOwnProperty(name)){throw new Error("a transform by that name already exists")}this.transforms[name]=transform};Collection.prototype.getTransform=function(name){return this.transforms[name]};Collection.prototype.setTransform=function(name,transform){this.transforms[name]=transform};Collection.prototype.removeTransform=function(name){delete this.transforms[name]};Collection.prototype.byExample=function(template){var k,obj,query;query=[];for(k in template){if(!template.hasOwnProperty(k))continue;query.push((obj={},obj[k]=template[k],obj))}return{$and:query}};Collection.prototype.findObject=function(template){return this.findOne(this.byExample(template))};Collection.prototype.findObjects=function(template){return this.find(this.byExample(template))};Collection.prototype.ttlDaemonFuncGen=function(){var collection=this;var age=this.ttl.age;return function ttlDaemon(){var now=Date.now();var toRemove=collection.chain().where(function daemonFilter(member){var timestamp=member.meta.updated||member.meta.created;var diff=now-timestamp;return age<diff});toRemove.remove()}};Collection.prototype.setTTL=function(age,interval){if(age<0){clearInterval(this.ttl.daemon)}else{this.ttl.age=age;this.ttl.ttlInterval=interval;this.ttl.daemon=setInterval(this.ttlDaemonFuncGen(),interval)}};Collection.prototype.prepareFullDocIndex=function(){var len=this.data.length;var indexes=new Array(len);for(var i=0;i<len;i+=1){indexes[i]=i}return indexes};Collection.prototype.configureOptions=function(options){options=options||{};if(options.hasOwnProperty("adaptiveBinaryIndices")){this.adaptiveBinaryIndices=options.adaptiveBinaryIndices;if(this.adaptiveBinaryIndices){this.ensureAllIndexes()}}};Collection.prototype.ensureIndex=function(property,force){if(typeof force==="undefined"){force=false}if(property===null||property===undefined){throw new Error("Attempting to set index without an associated property")}if(this.binaryIndices[property]&&!force){if(!this.binaryIndices[property].dirty)return}if(this.adaptiveBinaryIndices===true&&this.binaryIndices.hasOwnProperty(property)&&!force){return}var index={name:property,dirty:true,values:this.prepareFullDocIndex()};this.binaryIndices[property]=index;var wrappedComparer=function(prop,data){var val1,val2,arr;return function(a,b){if(~prop.indexOf(".")){arr=prop.split(".");val1=arr.reduce(function(obj,i){return obj&&obj[i]||undefined},data[a]);val2=arr.reduce(function(obj,i){return obj&&obj[i]||undefined},data[b])}else{val1=data[a][prop];val2=data[b][prop]}if(val1!==val2){if(Comparators.lt(val1,val2,false))return-1;if(Comparators.gt(val1,val2,false))return 1}return 0}}(property,this.data);index.values.sort(wrappedComparer);index.dirty=false;this.dirty=true};Collection.prototype.checkAllIndexes=function(options){var key,bIndices=this.binaryIndices;var results=[],result;for(key in bIndices){if(hasOwnProperty.call(bIndices,key)){result=this.checkIndex(key,options);if(!result){results.push(key)}}}return results};Collection.prototype.checkIndex=function(property,options){options=options||{};if(options.randomSamplingFactor&&options.randomSampling!==false){options.randomSampling=true}options.randomSamplingFactor=options.randomSamplingFactor||.1;if(options.randomSamplingFactor<0||options.randomSamplingFactor>1){options.randomSamplingFactor=.1}var valid=true,idx,iter,pos,len,biv;if(!this.binaryIndices.hasOwnProperty(property)){throw new Error("called checkIndex on property without an index: "+property)}if(!this.adaptiveBinaryIndices){this.ensureIndex(property)}biv=this.binaryIndices[property].values;len=biv.length;if(len!==this.data.length){if(options.repair){this.ensureIndex(property,true)}return false}if(len===0){return true}if(len===1){valid=biv[0]===0}else{if(options.randomSampling){if(!LokiOps.$lte(this.data[biv[0]][property],this.data[biv[1]][property])){valid=false}if(!LokiOps.$lte(this.data[biv[len-2]][property],this.data[biv[len-1]][property])){valid=false}if(valid){iter=Math.floor((len-1)*options.randomSamplingFactor);for(idx=0;idx<iter-1;idx++){pos=Math.floor(Math.random()*(len-1));if(!LokiOps.$lte(this.data[biv[pos]][property],this.data[biv[pos+1]][property])){valid=false;break}}}}else{for(idx=0;idx<len-1;idx++){if(!LokiOps.$lte(this.data[biv[idx]][property],this.data[biv[idx+1]][property])){valid=false;break}}}}if(!valid&&options.repair){this.ensureIndex(property,true)}return valid};Collection.prototype.getBinaryIndexValues=function(property){var idx,idxvals=this.binaryIndices[property].values;var result=[];for(idx=0;idx<idxvals.length;idx++){result.push(this.data[idxvals[idx]][property])}return result};Collection.prototype.ensureUniqueIndex=function(field){var index=this.constraints.unique[field];if(!index){if(this.uniqueNames.indexOf(field)==-1){this.uniqueNames.push(field)}}this.constraints.unique[field]=index=new UniqueIndex(field);this.data.forEach(function(obj){index.set(obj)});return index};Collection.prototype.ensureAllIndexes=function(force){var key,bIndices=this.binaryIndices;for(key in bIndices){if(hasOwnProperty.call(bIndices,key)){this.ensureIndex(key,force)}}};Collection.prototype.flagBinaryIndexesDirty=function(){var key,bIndices=this.binaryIndices;for(key in bIndices){if(hasOwnProperty.call(bIndices,key)){bIndices[key].dirty=true}}};Collection.prototype.flagBinaryIndexDirty=function(index){if(this.binaryIndices[index])this.binaryIndices[index].dirty=true};Collection.prototype.count=function(query){if(!query){return this.data.length}return this.chain().find(query).filteredrows.length};Collection.prototype.ensureId=function(){var len=this.data.length,i=0;this.idIndex=[];for(i;i<len;i+=1){this.idIndex.push(this.data[i].$loki)}};Collection.prototype.ensureIdAsync=function(callback){this.async(function(){this.ensureId()},callback)};Collection.prototype.addDynamicView=function(name,options){var dv=new DynamicView(this,name,options);this.DynamicViews.push(dv);return dv};Collection.prototype.removeDynamicView=function(name){this.DynamicViews=this.DynamicViews.filter(function(dv){return dv.name!==name})};Collection.prototype.getDynamicView=function(name){for(var idx=0;idx<this.DynamicViews.length;idx++){if(this.DynamicViews[idx].name===name){return this.DynamicViews[idx]}}return null};Collection.prototype.findAndUpdate=function(filterObject,updateFunction){if(typeof filterObject==="function"){this.updateWhere(filterObject,updateFunction)}else{this.chain().find(filterObject).update(updateFunction)}};Collection.prototype.findAndRemove=function(filterObject){this.chain().find(filterObject).remove()};Collection.prototype.insert=function(doc){if(!Array.isArray(doc)){return this.insertOne(doc)}var obj;var results=[];this.emit("pre-insert",doc);for(var i=0,len=doc.length;i<len;i++){obj=this.insertOne(doc[i],true);if(!obj){return undefined}results.push(obj)}this.emit("insert",results);results=this.cloneObjects?clone(results,this.cloneMethod):results;return results.length===1?results[0]:results};Collection.prototype.insertOne=function(doc,bulkInsert){var err=null;var returnObj;if(typeof doc!=="object"){err=new TypeError("Document needs to be an object")}else if(doc===null){err=new TypeError("Object cannot be null")}if(err!==null){this.emit("error",err);throw err}var obj=this.cloneObjects?clone(doc,this.cloneMethod):doc;if(!this.disableMeta&&typeof obj.meta==="undefined"){obj.meta={revision:0,created:0}}if(!bulkInsert){this.emit("pre-insert",obj)}if(!this.add(obj)){return undefined}if(this.disableChangesApi){this.insertMeta(obj)}else{this.insertMetaWithChange(obj)}returnObj=this.cloneObjects?clone(obj,this.cloneMethod):obj;if(!bulkInsert){this.emit("insert",returnObj)}this.addAutoUpdateObserver(returnObj);return returnObj};Collection.prototype.clear=function(options){var self=this;options=options||{};this.data=[];this.idIndex=[];this.cachedIndex=null;this.cachedBinaryIndex=null;this.cachedData=null;this.maxId=0;this.DynamicViews=[];this.dirty=true;if(options.removeIndices===true){this.binaryIndices={};this.constraints={unique:{},exact:{}};this.uniqueNames=[]}else{var keys=Object.keys(this.binaryIndices);keys.forEach(function(biname){self.binaryIndices[biname].dirty=false;self.binaryIndices[biname].values=[]});this.constraints={unique:{},exact:{}};this.uniqueNames.forEach(function(uiname){self.ensureUniqueIndex(uiname)})}};Collection.prototype.update=function(doc){var adaptiveBatchOverride,k,len;if(Array.isArray(doc)){len=doc.length;adaptiveBatchOverride=!this.cloneObjects&&this.adaptiveBinaryIndices&&Object.keys(this.binaryIndices).length>0;if(adaptiveBatchOverride){this.adaptiveBinaryIndices=false}try{for(k=0;k<len;k+=1){this.update(doc[k])}}finally{if(adaptiveBatchOverride){this.ensureAllIndexes();this.adaptiveBinaryIndices=true}}return}if(!hasOwnProperty.call(doc,"$loki")){throw new Error("Trying to update unsynced document. Please save the document first by using insert() or addMany()")}try{this.startTransaction();var arr=this.get(doc.$loki,true),oldInternal,newInternal,position,self=this;if(!arr){throw new Error("Trying to update a document not in collection.")}oldInternal=arr[0];position=arr[1];newInternal=this.cloneObjects||!this.disableDeltaChangesApi?clone(doc,this.cloneMethod):doc;this.emit("pre-update",doc);Object.keys(this.constraints.unique).forEach(function(key){self.constraints.unique[key].update(oldInternal,newInternal)});this.data[position]=newInternal;if(newInternal!==doc){this.addAutoUpdateObserver(doc)}for(var idx=0;idx<this.DynamicViews.length;idx++){this.DynamicViews[idx].evaluateDocument(position,false)}var key;if(this.adaptiveBinaryIndices){var bIndices=this.binaryIndices;for(key in bIndices){this.adaptiveBinaryIndexUpdate(position,key)}}else{this.flagBinaryIndexesDirty()}this.idIndex[position]=newInternal.$loki;this.commit();this.dirty=true;if(this.disableChangesApi){this.updateMeta(newInternal,null)}else{this.updateMetaWithChange(newInternal,oldInternal)}var returnObj;if(this.cloneObjects){returnObj=clone(newInternal,this.cloneMethod)}else{returnObj=newInternal}this.emit("update",returnObj,oldInternal);return returnObj}catch(err){this.rollback();this.console.error(err.message);this.emit("error",err);throw err}};Collection.prototype.add=function(obj){if("object"!==typeof obj){throw new TypeError("Object being added needs to be an object")}if(typeof obj.$loki!=="undefined"){throw new Error("Document is already in collection, please use update()")}try{this.startTransaction();this.maxId++;if(isNaN(this.maxId)){this.maxId=this.data[this.data.length-1].$loki+1}obj.$loki=this.maxId;if(!this.disableMeta){obj.meta.version=0}var key,constrUnique=this.constraints.unique;for(key in constrUnique){if(hasOwnProperty.call(constrUnique,key)){constrUnique[key].set(obj)}}this.idIndex.push(obj.$loki);this.data.push(obj);var addedPos=this.data.length-1;var dvlen=this.DynamicViews.length;for(var i=0;i<dvlen;i++){this.DynamicViews[i].evaluateDocument(addedPos,true)}if(this.adaptiveBinaryIndices){var bIndices=this.binaryIndices;for(key in bIndices){this.adaptiveBinaryIndexInsert(addedPos,key)}}else{this.flagBinaryIndexesDirty()}this.commit();this.dirty=true;return this.cloneObjects?clone(obj,this.cloneMethod):obj}catch(err){this.rollback();this.console.error(err.message);this.emit("error",err);throw err}};Collection.prototype.updateWhere=function(filterFunction,updateFunction){var results=this.where(filterFunction),i=0,obj;try{for(i;i<results.length;i++){obj=updateFunction(results[i]);this.update(obj)}}catch(err){this.rollback();this.console.error(err.message)}};Collection.prototype.removeWhere=function(query){var list;if(typeof query==="function"){list=this.data.filter(query);this.remove(list)}else{this.chain().find(query).remove()}};Collection.prototype.removeDataOnly=function(){this.remove(this.data.slice())};Collection.prototype.removeBatchByPositions=function(positions){var len=positions.length;var xo={};var dlen,didx,idx;var bic=Object.keys(this.binaryIndices).length;var uic=Object.keys(this.constraints.unique).length;var adaptiveOverride=this.adaptiveBinaryIndices&&Object.keys(this.binaryIndices).length>0;var doc,self=this;try{this.startTransaction();for(idx=0;idx<len;idx++){xo[this.idIndex[positions[idx]]]=true}dlen=this.DynamicViews.length;if(dlen>0||bic>0||uic>0){if(dlen>0){for(didx=0;didx<dlen;didx++){this.DynamicViews[didx].removeDocument(positions)}}if(this.adaptiveBinaryIndices&&!adaptiveOverride){var key,bIndices=this.binaryIndices;for(key in bIndices){this.adaptiveBinaryIndexRemove(positions,key)}}else{this.flagBinaryIndexesDirty()}if(uic){Object.keys(this.constraints.unique).forEach(function(key){for(idx=0;idx<len;idx++){doc=self.data[positions[idx]];if(doc[key]!==null&&doc[key]!==undefined){self.constraints.unique[key].remove(doc[key])}}})}}if(!this.disableChangesApi||this.events.delete.length>1){for(idx=0;idx<len;idx++){this.emit("delete",this.data[positions[idx]])}}this.data=this.data.filter(function(obj){return!xo[obj.$loki]});this.idIndex=this.idIndex.filter(function(id){return!xo[id]});if(this.adaptiveBinaryIndices&&adaptiveOverride){this.adaptiveBinaryIndices=false;this.ensureAllIndexes(true);this.adaptiveBinaryIndices=true}this.commit();this.dirty=true}catch(err){this.rollback();if(adaptiveOverride){this.adaptiveBinaryIndices=true}this.console.error(err.message);this.emit("error",err);return null}};Collection.prototype.removeBatch=function(batch){var len=batch.length,dlen=this.data.length,idx;var xlt={};var posx=[];for(idx=0;idx<dlen;idx++){xlt[this.data[idx].$loki]=idx}for(idx=0;idx<len;idx++){if(typeof batch[idx]==="object"){posx.push(xlt[batch[idx].$loki])}else{posx.push(xlt[batch[idx]])}}this.removeBatchByPositions(posx)};Collection.prototype.remove=function(doc){if(typeof doc==="number"){doc=this.get(doc)}if("object"!==typeof doc){throw new Error("Parameter is not an object")}if(Array.isArray(doc)){this.removeBatch(doc);return}if(!hasOwnProperty.call(doc,"$loki")){throw new Error("Object is not a document stored in the collection")}try{this.startTransaction();var arr=this.get(doc.$loki,true),position=arr[1];var self=this;Object.keys(this.constraints.unique).forEach(function(key){if(doc[key]!==null&&typeof doc[key]!=="undefined"){self.constraints.unique[key].remove(doc[key])}});for(var idx=0;idx<this.DynamicViews.length;idx++){this.DynamicViews[idx].removeDocument(position)}if(this.adaptiveBinaryIndices){var key,bIndices=this.binaryIndices;for(key in bIndices){this.adaptiveBinaryIndexRemove(position,key)}}else{this.flagBinaryIndexesDirty()}this.data.splice(position,1);this.removeAutoUpdateObserver(doc);this.idIndex.splice(position,1);this.commit();this.dirty=true;this.emit("delete",arr[0]);delete doc.$loki;delete doc.meta;return doc}catch(err){this.rollback();this.console.error(err.message);this.emit("error",err);return null}};Collection.prototype.get=function(id,returnPosition){var retpos=returnPosition||false,data=this.idIndex,max=data.length-1,min=0,mid=min+max>>1;id=typeof id==="number"?id:parseInt(id,10);if(isNaN(id)){throw new TypeError("Passed id is not an integer")}while(data[min]<data[max]){mid=min+max>>1;if(data[mid]<id){min=mid+1}else{max=mid}}if(max===min&&data[min]===id){if(retpos){return[this.data[min],min]}return this.data[min]}return null};Collection.prototype.getBinaryIndexPosition=function(dataPosition,binaryIndexName){var val=this.data[dataPosition][binaryIndexName];var index=this.binaryIndices[binaryIndexName].values;var range=this.calculateRange("$eq",binaryIndexName,val);if(range[0]===0&&range[1]===-1){return null}var min=range[0];var max=range[1];for(var idx=min;idx<=max;idx++){if(index[idx]===dataPosition)return idx}return null};Collection.prototype.adaptiveBinaryIndexInsert=function(dataPosition,binaryIndexName){var index=this.binaryIndices[binaryIndexName].values;var val=this.data[dataPosition][binaryIndexName];if(this.serializableIndices===true&&val instanceof Date){this.data[dataPosition][binaryIndexName]=val.getTime();val=this.data[dataPosition][binaryIndexName]}var idxPos=index.length===0?0:this.calculateRangeStart(binaryIndexName,val,true);this.binaryIndices[binaryIndexName].values.splice(idxPos,0,dataPosition)};Collection.prototype.adaptiveBinaryIndexUpdate=function(dataPosition,binaryIndexName){var idxPos,index=this.binaryIndices[binaryIndexName].values,len=index.length;for(idxPos=0;idxPos<len;idxPos++){if(index[idxPos]===dataPosition)break}this.binaryIndices[binaryIndexName].values.splice(idxPos,1);this.adaptiveBinaryIndexInsert(dataPosition,binaryIndexName)};Collection.prototype.adaptiveBinaryIndexRemove=function(dataPosition,binaryIndexName,removedFromIndexOnly){var bi=this.binaryIndices[binaryIndexName];var len,idx,rmidx,rmlen,rxo={};var curr,shift,idxPos;if(Array.isArray(dataPosition)){rmlen=dataPosition.length;if(rmlen===1){dataPosition=dataPosition[0]}else{for(rmidx=0;rmidx<rmlen;rmidx++){rxo[dataPosition[rmidx]]=true}bi.values=bi.values.filter(function(di){return!rxo[di]});if(removedFromIndexOnly===true){return}var sortedPositions=dataPosition.slice();sortedPositions.sort(function(a,b){return a-b});len=bi.values.length;for(idx=0;idx<len;idx++){curr=bi.values[idx];shift=0;for(rmidx=0;rmidx<rmlen&&curr>sortedPositions[rmidx];rmidx++){shift++}bi.values[idx]-=shift}return}}idxPos=this.getBinaryIndexPosition(dataPosition,binaryIndexName);if(idxPos===null){return null}bi.values.splice(idxPos,1);if(removedFromIndexOnly===true){return}len=bi.values.length;for(idx=0;idx<len;idx++){if(bi.values[idx]>dataPosition){bi.values[idx]--}}};Collection.prototype.calculateRangeStart=function(prop,val,adaptive){var rcd=this.data;var index=this.binaryIndices[prop].values;var min=0;var max=index.length-1;var mid=0;if(index.length===0){return-1}var minVal=rcd[index[min]][prop];var maxVal=rcd[index[max]][prop];while(min<max){mid=min+max>>1;if(Comparators.lt(rcd[index[mid]][prop],val,false)){min=mid+1}else{max=mid}}var lbound=min;if(Comparators.aeq(val,rcd[index[lbound]][prop])){return lbound}if(Comparators.lt(val,rcd[index[lbound]][prop],false)){return adaptive?lbound:lbound-1}return adaptive?lbound+1:lbound};Collection.prototype.calculateRangeEnd=function(prop,val){var rcd=this.data;var index=this.binaryIndices[prop].values;var min=0;var max=index.length-1;var mid=0;if(index.length===0){return-1}var minVal=rcd[index[min]][prop];var maxVal=rcd[index[max]][prop];while(min<max){mid=min+max>>1;if(Comparators.lt(val,rcd[index[mid]][prop],false)){max=mid}else{min=mid+1}}var ubound=max;if(Comparators.aeq(val,rcd[index[ubound]][prop])){return ubound}if(Comparators.gt(val,rcd[index[ubound]][prop],false)){return ubound+1}if(Comparators.aeq(val,rcd[index[ubound-1]][prop])){return ubound-1}return ubound};Collection.prototype.calculateRange=function(op,prop,val){var rcd=this.data;var index=this.binaryIndices[prop].values;var min=0;var max=index.length-1;var mid=0;var lbound,lval;var ubound,uval;if(rcd.length===0){return[0,-1]}var minVal=rcd[index[min]][prop];var maxVal=rcd[index[max]][prop];switch(op){case"$eq":case"$aeq":if(Comparators.lt(val,minVal,false)||Comparators.gt(val,maxVal,false)){return[0,-1]}break;case"$dteq":if(Comparators.lt(val,minVal,false)||Comparators.gt(val,maxVal,false)){return[0,-1]}break;case"$gt":if(Comparators.gt(val,maxVal,true)){return[0,-1]}if(Comparators.gt(minVal,val,false)){return[min,max]}break;case"$gte":if(Comparators.gt(val,maxVal,false)){return[0,-1]}if(Comparators.gt(minVal,val,true)){return[min,max]}break;case"$lt":if(Comparators.lt(val,minVal,true)){return[0,-1]}if(Comparators.lt(maxVal,val,false)){return[min,max]}break;case"$lte":if(Comparators.lt(val,minVal,false)){return[0,-1]}if(Comparators.lt(maxVal,val,true)){return[min,max]}break;case"$between":if(Comparators.gt(val[0],maxVal,false)){return[0,-1]}if(Comparators.lt(val[1],minVal,false)){return[0,-1]}lbound=this.calculateRangeStart(prop,val[0]);ubound=this.calculateRangeEnd(prop,val[1]);if(lbound<0)lbound++;if(ubound>max)ubound--;if(!Comparators.gt(rcd[index[lbound]][prop],val[0],true))lbound++;if(!Comparators.lt(rcd[index[ubound]][prop],val[1],true))ubound--;if(ubound<lbound)return[0,-1];return[lbound,ubound];case"$in":var idxset=[],segResult=[];for(var j=0,len=val.length;j<len;j++){var seg=this.calculateRange("$eq",prop,val[j]);for(var i=seg[0];i<=seg[1];i++){if(idxset[i]===undefined){idxset[i]=true;segResult.push(i)}}}return segResult}switch(op){case"$eq":case"$aeq":case"$dteq":case"$gte":case"$lt":lbound=this.calculateRangeStart(prop,val);lval=rcd[index[lbound]][prop];break;default:break}switch(op){case"$eq":case"$aeq":case"$dteq":case"$lte":case"$gt":ubound=this.calculateRangeEnd(prop,val);uval=rcd[index[ubound]][prop];break;default:break}switch(op){case"$eq":case"$aeq":case"$dteq":if(!Comparators.aeq(lval,val)){return[0,-1]}return[lbound,ubound];case"$gt":if(!Comparators.aeq(rcd[index[ubound]][prop],val)){return[ubound,max]}return[ubound+1,max];case"$gte":if(!Comparators.aeq(rcd[index[lbound]][prop],val)){return[lbound+1,max]}return[lbound,max];case"$lt":if(!Comparators.aeq(rcd[index[lbound]][prop],val)){return[min,lbound]}return[min,lbound-1];case"$lte":if(!Comparators.aeq(rcd[index[ubound]][prop],val)){return[min,ubound-1]}return[min,ubound];default:return[0,rcd.length-1]}};Collection.prototype.by=function(field,value){var self;if(value===undefined){self=this;return function(value){return self.by(field,value)}}var result=this.constraints.unique[field].get(value);if(!this.cloneObjects){return result}else{return clone(result,this.cloneMethod)}};Collection.prototype.findOne=function(query){query=query||{};var result=this.chain().find(query,true).data();if(Array.isArray(result)&&result.length===0){return null}else{if(!this.cloneObjects){return result[0]}else{return clone(result[0],this.cloneMethod)}}};Collection.prototype.chain=function(transform,parameters){var rs=new Resultset(this);if(typeof transform==="undefined"){return rs}return rs.transform(transform,parameters)};Collection.prototype.find=function(query){return this.chain().find(query).data()};Collection.prototype.findOneUnindexed=function(prop,value){var i=this.data.length,doc;while(i--){if(this.data[i][prop]===value){doc=this.data[i];return doc}}return null};Collection.prototype.startTransaction=function(){if(this.transactional){this.cachedData=clone(this.data,this.cloneMethod);this.cachedIndex=this.idIndex;this.cachedBinaryIndex=this.binaryIndices;for(var idx=0;idx<this.DynamicViews.length;idx++){this.DynamicViews[idx].startTransaction()}}};Collection.prototype.commit=function(){if(this.transactional){this.cachedData=null;this.cachedIndex=null;this.cachedBinaryIndex=null;for(var idx=0;idx<this.DynamicViews.length;idx++){this.DynamicViews[idx].commit()}}};Collection.prototype.rollback=function(){if(this.transactional){if(this.cachedData!==null&&this.cachedIndex!==null){this.data=this.cachedData;this.idIndex=this.cachedIndex;this.binaryIndices=this.cachedBinaryIndex}for(var idx=0;idx<this.DynamicViews.length;idx++){this.DynamicViews[idx].rollback()}}};Collection.prototype.async=function(fun,callback){setTimeout(function(){if(typeof fun==="function"){fun();callback()}else{throw new TypeError("Argument passed for async execution is not a function")}},0)};Collection.prototype.where=function(fun){return this.chain().where(fun).data()};Collection.prototype.mapReduce=function(mapFunction,reduceFunction){try{return reduceFunction(this.data.map(mapFunction))}catch(err){throw err}};Collection.prototype.eqJoin=function(joinData,leftJoinProp,rightJoinProp,mapFun,dataOptions){return new Resultset(this).eqJoin(joinData,leftJoinProp,rightJoinProp,mapFun,dataOptions)};Collection.prototype.stages={};Collection.prototype.getStage=function(name){if(!this.stages[name]){this.stages[name]={}}return this.stages[name]};Collection.prototype.commitLog=[];Collection.prototype.stage=function(stageName,obj){var copy=JSON.parse(JSON.stringify(obj));this.getStage(stageName)[obj.$loki]=copy;return copy};Collection.prototype.commitStage=function(stageName,message){var stage=this.getStage(stageName),prop,timestamp=(new Date).getTime();for(prop in stage){this.update(stage[prop]);this.commitLog.push({timestamp:timestamp,message:message,data:JSON.parse(JSON.stringify(stage[prop]))})}this.stages[stageName]={}};Collection.prototype.no_op=function(){return};Collection.prototype.extract=function(field){var i=0,len=this.data.length,isDotNotation=isDeepProperty(field),result=[];for(i;i<len;i+=1){result.push(deepProperty(this.data[i],field,isDotNotation))}return result};Collection.prototype.max=function(field){return Math.max.apply(null,this.extract(field))};Collection.prototype.min=function(field){return Math.min.apply(null,this.extract(field))};Collection.prototype.maxRecord=function(field){var i=0,len=this.data.length,deep=isDeepProperty(field),result={index:0,value:undefined},max;for(i;i<len;i+=1){if(max!==undefined){if(max<deepProperty(this.data[i],field,deep)){max=deepProperty(this.data[i],field,deep);result.index=this.data[i].$loki}}else{max=deepProperty(this.data[i],field,deep);result.index=this.data[i].$loki}}result.value=max;return result};Collection.prototype.minRecord=function(field){var i=0,len=this.data.length,deep=isDeepProperty(field),result={index:0,value:undefined},min;for(i;i<len;i+=1){if(min!==undefined){if(min>deepProperty(this.data[i],field,deep)){min=deepProperty(this.data[i],field,deep);result.index=this.data[i].$loki}}else{min=deepProperty(this.data[i],field,deep);result.index=this.data[i].$loki}}result.value=min;return result};Collection.prototype.extractNumerical=function(field){return this.extract(field).map(parseBase10).filter(Number).filter(function(n){return!isNaN(n)})};Collection.prototype.avg=function(field){return average(this.extractNumerical(field))};Collection.prototype.stdDev=function(field){return standardDeviation(this.extractNumerical(field))};Collection.prototype.mode=function(field){var dict={},data=this.extract(field);data.forEach(function(obj){if(dict[obj]){dict[obj]+=1}else{dict[obj]=1}});var max,prop,mode;for(prop in dict){if(max){if(max<dict[prop]){mode=prop}}else{mode=prop;max=dict[prop]}}return mode};Collection.prototype.median=function(field){var values=this.extractNumerical(field);values.sort(sub);var half=Math.floor(values.length/2);if(values.length%2){return values[half]}else{return(values[half-1]+values[half])/2}};function isDeepProperty(field){return field.indexOf(".")!==-1}function parseBase10(num){return parseFloat(num,10)}function isNotUndefined(obj){return obj!==undefined}function add(a,b){return a+b}function sub(a,b){return a-b}function median(values){values.sort(sub);var half=Math.floor(values.length/2);return values.length%2?values[half]:(values[half-1]+values[half])/2}function average(array){return array.reduce(add,0)/array.length}function standardDeviation(values){var avg=average(values);var squareDiffs=values.map(function(value){var diff=value-avg;var sqrDiff=diff*diff;return sqrDiff});var avgSquareDiff=average(squareDiffs);var stdDev=Math.sqrt(avgSquareDiff);return stdDev}function deepProperty(obj,property,isDeep){if(isDeep===false){return obj[property]}var pieces=property.split("."),root=obj;while(pieces.length>0){root=root[pieces.shift()]}return root}function binarySearch(array,item,fun){var lo=0,hi=array.length,compared,mid;while(lo<hi){mid=lo+hi>>1;compared=fun.apply(null,[item,array[mid]]);if(compared===0){return{found:true,index:mid}}else if(compared<0){hi=mid}else{lo=mid+1}}return{found:false,index:hi}}function BSonSort(fun){return function(array,item){return binarySearch(array,item,fun)}}function KeyValueStore(){}KeyValueStore.prototype={keys:[],values:[],sort:function(a,b){return a<b?-1:a>b?1:0},setSort:function(fun){this.bs=new BSonSort(fun)},bs:function(){return new BSonSort(this.sort)},set:function(key,value){var pos=this.bs(this.keys,key);if(pos.found){this.values[pos.index]=value}else{this.keys.splice(pos.index,0,key);this.values.splice(pos.index,0,value)}},get:function(key){return this.values[binarySearch(this.keys,key,this.sort).index]}};function UniqueIndex(uniqueField){this.field=uniqueField;this.keyMap={};this.lokiMap={}}UniqueIndex.prototype.keyMap={};UniqueIndex.prototype.lokiMap={};UniqueIndex.prototype.set=function(obj){var fieldValue=obj[this.field];if(fieldValue!==null&&typeof fieldValue!=="undefined"){if(this.keyMap[fieldValue]){throw new Error("Duplicate key for property "+this.field+": "+fieldValue)}else{this.keyMap[fieldValue]=obj;this.lokiMap[obj.$loki]=fieldValue}}};UniqueIndex.prototype.get=function(key){return this.keyMap[key]};UniqueIndex.prototype.byId=function(id){return this.keyMap[this.lokiMap[id]]};UniqueIndex.prototype.update=function(obj,doc){if(this.lokiMap[obj.$loki]!==doc[this.field]){var old=this.lokiMap[obj.$loki];this.set(doc);this.keyMap[old]=undefined}else{this.keyMap[obj[this.field]]=doc}};UniqueIndex.prototype.remove=function(key){var obj=this.keyMap[key];if(obj!==null&&typeof obj!=="undefined"){this.keyMap[key]=undefined;this.lokiMap[obj.$loki]=undefined}else{throw new Error("Key is not in unique index: "+this.field)}};UniqueIndex.prototype.clear=function(){this.keyMap={};this.lokiMap={}};function ExactIndex(exactField){this.index={};this.field=exactField}ExactIndex.prototype={set:function add(key,val){if(this.index[key]){this.index[key].push(val)}else{this.index[key]=[val]}},remove:function remove(key,val){var idxSet=this.index[key];for(var i in idxSet){if(idxSet[i]==val){idxSet.splice(i,1)}}if(idxSet.length<1){this.index[key]=undefined}},get:function get(key){return this.index[key]},clear:function clear(key){this.index={}}};function SortedIndex(sortedField){this.field=sortedField}SortedIndex.prototype={keys:[],values:[],sort:function(a,b){return a<b?-1:a>b?1:0},bs:function(){return new BSonSort(this.sort)},setSort:function(fun){this.bs=new BSonSort(fun)},set:function(key,value){var pos=binarySearch(this.keys,key,this.sort);if(pos.found){this.values[pos.index].push(value)}else{this.keys.splice(pos.index,0,key);this.values.splice(pos.index,0,[value])}},get:function(key){var bsr=binarySearch(this.keys,key,this.sort);if(bsr.found){return this.values[bsr.index]}else{return[]}},getLt:function(key){var bsr=binarySearch(this.keys,key,this.sort);var pos=bsr.index;if(bsr.found)pos--;return this.getAll(key,0,pos)},getGt:function(key){var bsr=binarySearch(this.keys,key,this.sort);var pos=bsr.index;if(bsr.found)pos++;return this.getAll(key,pos,this.keys.length)},getAll:function(key,start,end){var results=[];for(var i=start;i<end;i++){
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results=results.concat(this.values[i])}return results},getPos:function(key){return binarySearch(this.keys,key,this.sort)},remove:function(key,value){var pos=binarySearch(this.keys,key,this.sort).index;var idxSet=this.values[pos];for(var i in idxSet){if(idxSet[i]==value)idxSet.splice(i,1)}if(idxSet.length<1){this.keys.splice(pos,1);this.values.splice(pos,1)}},clear:function(){this.keys=[];this.values=[]}};Loki.LokiOps=LokiOps;Loki.Collection=Collection;Loki.KeyValueStore=KeyValueStore;Loki.LokiMemoryAdapter=LokiMemoryAdapter;Loki.LokiPartitioningAdapter=LokiPartitioningAdapter;Loki.LokiLocalStorageAdapter=LokiLocalStorageAdapter;Loki.LokiFsAdapter=LokiFsAdapter;Loki.persistenceAdapters={fs:LokiFsAdapter,localStorage:LokiLocalStorageAdapter};Loki.aeq=aeqHelper;Loki.lt=ltHelper;Loki.gt=gtHelper;Loki.Comparators=Comparators;return Loki}()});
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