query.min.js

(function(){function objectify(a){var rows=[];for(var key in a){var o={};o[key]=a[key];rows.push(o)}return rows}function isNA(val){return val===""||val===undefined||val===null}function notNA(val){return val!==""&&val!==undefined&&val!==null}function _get(row,key,getter){if(typeof key=="number")return key;else if(getter)return getter(row,key);else return row[key]}if(!String.prototype.startsWith){Object.defineProperty(String.prototype,"startsWith",{enumerable:false,configurable:false,writable:false,value:function(searchString,position){position=position||0;return this.lastIndexOf(searchString,position)===position}})}if(!String.prototype.endsWith){Object.defineProperty(String.prototype,"endsWith",{value:function(searchString,position){var subjectString=this.toString();if(position===undefined||position>subjectString.length){position=subjectString.length}position-=searchString.length;var lastIndex=subjectString.indexOf(searchString,position);return lastIndex!==-1&&lastIndex===position}})}var Query={satisfies:function(row,constraints,getter){if(typeof constraints==="string")return this.Query(constraints,getter)(row);else return Query.lhs._rowsatisfies(row,constraints,getter)},Query:function(constraints,getter){return function(row){return Query.lhs._rowsatisfies(row,constraints,getter)}},join:function(left_rows,right_rows,left_key,right_key){var leftKeyFn,rightKeyFn;if(typeof left_key=="string")leftKeyFn=function(row){return row[left_key]};else leftKeyFn=left_key;if(!right_key)rightKeyFn=leftKeyFn;if(typeof right_key=="string")rightKeyFn=function(row){return row[left_key]};else rightKeyFn=right_key;return left_rows},query:function(rows,constraints,getter){if(!Array.isArray(rows))return[];if(typeof getter=="string"){var method=getter;getter=function(obj,key){return obj[method](key)}}var filter=new Query.Query(constraints,getter);return rows.filter(filter)},lhs:{_rowsatisfies:function(row,constraints,getter){for(var key in constraints){if(this[key]){if(!this[key](row,constraints[key],getter))return false}else{var val=getter?getter(row,key):row[key];var res=this.rhs._satisfies(val,constraints[key],row,getter);if(!res)return false}}return true},$count:function(row,condition,getter){let subconditions=condition.$conditions||condition.$constraints;var res=subconditions.map(function(c){return Query.satisfies(row,c,getter)}).filter(function(v){return v}).length;return this.rhs._satisfies(res,condition.$constraint)},$same:function(row,condition,getter){if(Array.isArray(condition)){var vals=condition.map(function(key){return getter?getter(row,key):row[key]}).filter(notNA);if(vals.length==0)return true;for(var i=0;i<vals.length;i++){if(vals[i]!=vals[0])return false}return true}throw new Error("$same requires array value ")},$not:function(row,constraint,getter){return!this._rowsatisfies(row,constraint,getter)},$or:function(row,constraint,getter){if(!Array.isArray(constraint)){constraint=objectify(constraint)}for(var i=0;i<constraint.length;i++){if(this._rowsatisfies(row,constraint[i],getter))return true}return false},$and:function(row,constraint,getter){if(!Array.isArray(constraint)){constraint=objectify(constraint)}for(var i=0;i<constraint.length;i++){if(!this._rowsatisfies(row,constraint[i],getter))return false}return true},$nor:function(row,constraint,getter){return!this.$or(row,constraint,getter)},$where:function(row,fnDef){throw new Error("$where constraints no longer supported")},$expr:function(row,expr,getter){var val;var result=true;for(var key in expr){if(this.rhs[key]){var parts=expr[key];var constraint=parts[0];var aggrexp=parts[1];var operation=Object.keys(aggrexp)[0];var operands=aggrexp[operation];var value=this.agg[operation](row,operands,getter);result=result&&this.rhs[key](value,constraint)}}return result},agg:{$sum:function(row,operands,getter){var sum=0;for(var i=0;i<operands.length;i++){var key=operands[i];var val=_get(row,key,getter);if(val==+val){sum+=+val}}return sum},$min:function(row,operands,getter){var min=+Infinity;for(var i=0;i<operands.length;i++){var key=operands[i];var val=_get(row,key,getter);if(val==+val)val=+val;if(val<min){min=val}}return min},$max:function(row,operands,getter){var max=-Infinity;for(var i=0;i<operands.length;i++){var key=operands[i];var val=_get(row,key,getter);if(val==+val)val=+val;if(val>max){max=val}}return max},$divide:function(row,operands,getter){var num=_get(row,operands[0],getter);var den=_get(row,operands[1],getter);return num/den},$same:function(row,condition,getter){if(Array.isArray(condition)){var vals=condition.map(function(key){return getter?getter(row,key):row[key]}).filter(notNA);if(vals.length==0)return true;for(var i=0;i<vals.length;i++){if(vals[i]!=vals[0])return false}return true}throw new Error("$same requires array value ")}},rhs:{$cb:function(value,constraint){return constraint(value)},_satisfies:function(value,constraint,row,getter){if(constraint===value)return true;if(typeof value==="string"){if(value[0]==="["||value[0]==="{"){try{value=JSON.parse(value)}catch(e){}}}if(constraint instanceof RegExp)return this.$regex(value,new RegExp(constraint));else if(Array.isArray(constraint))return this.$in(value,constraint);else if(constraint&&typeof constraint==="object"){if(constraint instanceof Date)return this.$eq(value,constraint.getTime());else if(constraint.$regex)return this.$regex(value,new RegExp(constraint.$regex,constraint.$options));else if(constraint instanceof RegExp)return this.$regex(value,constraint);else{for(var key in constraint){if(!this[key])return this.$eq(value,constraint,row,getter);else if(!this[key](value,constraint[key],row,getter))return false}return true}}else if(constraint===""||constraint===null||constraint===undefined)return this.$null(value);else if(Array.isArray(value)){for(var i=0;i<value.length;i++)if(this.$eq(value[i],constraint))return true;return false}else return this.$eq(value,constraint,row,getter)},$eq:function(value,constraint){if(value===constraint)return true;else if(Array.isArray(value)){for(var i=0;i<value.length;i++)if(this.$eq(value[i],constraint))return true;return false}else if(constraint===null||constraint===undefined||constraint===""){return this.$null(value)}else if(value===null||value===""||value===undefined)return false;else if(value instanceof Date){if(constraint instanceof Date){return value.getTime()==constraint.getTime()}else if(typeof constraint=="number"){return value.getTime()==constraint}else if(typeof constraint=="string")return value.getTime()==new Date(constraint).getTime()}else{return value==constraint}},$exists:function(value,constraint){return value!=undefined==(constraint&&true)},$deepEquals:function(value,constraint){if(typeof _=="undefined"||typeof _.isEqual=="undefined"){return JSON.stringify(value)==JSON.stringify(constraint)}else{return _.isEqual(value,constraint)}},$not:function(values,constraint){return!this._satisfies(values,constraint)},$ne:function(values,constraint){return!this._satisfies(values,constraint)},$nor:function(values,constraint){return!this.$or(values,constraint)},$and:function(values,constraint){if(!Array.isArray(constraint)){throw new Error("Logic $and takes array of constraint objects")}for(var i=0;i<constraint.length;i++){var res=this._satisfies(values,constraint[i]);if(!res)return false}return true},$or:function(values,constraint){if(!Array.isArray(values)){values=[values]}for(var v=0;v<values.length;v++){for(var i=0;i<constraint.length;i++){if(this._satisfies(values[v],constraint[i])){return true}}}return false},$null:function(values){var result;if(values===""||values===null||values===undefined){return true}else if(Array.isArray(values)){if(values.length==0)return true;for(var v=0;v<values.length;v++){if(!this.$null(values[v])){return false}}return true}else return false},$in:function(values,constraint){if(!Array.isArray(constraint))throw new Error("$in requires an array operand");var result=false;if(!Array.isArray(values)){values=[values]}for(var v=0;v<values.length;v++){var val=values[v];for(var i=0;i<constraint.length;i++){if(constraint.indexOf(val)>=0||this._satisfies(val,constraint[i])){result=true;break}}}return result},$likeI:function(values,constraint){return String(values).toLowerCase().indexOf(constraint)>=0},$like:function(values,constraint){return values.indexOf(constraint)>=0},$startsWith:function(values,constraint){if(!values)return false;return values.startsWith(constraint)},$endsWith:function(values,constraint){if(!values)return false;return values.endsWith(constraint)},$elemMatch:function(values,constraint){if(Array.isArray(values)){for(var i=0;i<values.length;i++){if(Query.lhs.rhs._satisfies(values[i],constraint))return true}return false}else return Query.lhs.rhs._satisfies(values,constraint)},$contains:function(values,constraint){return values.indexOf(constraint)>=0},$nin:function(values,constraint){return!this.$in(values,constraint)},$regex:function(values,constraint){var result=0;if(Array.isArray(values)){for(var i=0;i<values.length;i++){if(new RegExp(constraint).test(values[i])){return true}}}else return constraint.test(values)},$gte:function(values,ref){if(Array.isArray(values)){var self=this;return values.every(function(v){return self.$gte(v,ref)})}return!this.$null(values)&&values>=this.resolve(ref)},$gt:function(values,ref){if(Array.isArray(values)){var self=this;return values.every(function(v){return self.$gt(v,ref)})}return!this.$null(values)&&values>this.resolve(ref)},$lt:function(values,ref){if(Array.isArray(values)){var self=this;return values.every(function(v){return self.$lt(v,ref)})}return!this.$null(values)&&values<this.resolve(ref)},$lte:function(values,ref){if(Array.isArray(values)){var self=this;return values.every(function(v){return self.$lte(v,ref)})}return!this.$null(values)&&values<=this.resolve(ref)},$before:function(values,ref){if(typeof ref==="string")ref=Date.parse(ref);if(typeof values==="string")values=Date.parse(values);return this.$lte(values,ref)},$after:function(values,ref){if(typeof ref==="string")ref=Date.parse(ref);if(typeof values==="string")values=Date.parse(values);return this.$gte(values,ref)},$type:function(values,ref){return typeof values==ref},$all:function(values,ref){throw new Error("$all not implemented")},$size:function(values,ref){return typeof values=="object"&&(values.length==ref||Object.keys(values).length==ref)},$mod:function(values,ref){return values%ref[0]==ref[1]},$equal:function(){return this.$eq(arguments)},$between:function(values,ref){return this._satisfies(values,{$gt:ref[0],$lt:ref[1]})},resolve:function(ref){if(typeof ref==="object"){if(ref["$date"])return Date.parse(ref["$date"])}return ref}}}};Query.undot=function(obj,key){var keys=key.split("."),sub=obj;for(var i=0;i<keys.length;i++){sub=sub[keys[i]]}return sub};Query.undotArray=function(obj,key){var keys=key.split("."),sub=obj;for(var i=0;i<keys.length;i++){var key=keys[i];if(Array.isArray(sub)){var intKey=parseInt(key);if(!isNaN(intKey)){sub=sub[intKey]}else{if(Array.isArray(sub[0])){sub=sub.reduce(function(result,element){return result.concat(element)},[])}sub=sub.map(function(value){return Query.undotArray(value,key)})}}else{sub=sub[key]}}return sub};Query.lhs.rhs.$equal=Query.lhs.rhs.$eq;Query.lhs.rhs.$any=Query.lhs.rhs.$or;Query.lhs.rhs.$all=Query.lhs.rhs.$and;Query.valueSatisfiesConstraint=function(value,constraint){return this.lhs.rhs._satisfies(value,constraint)};RegExp.prototype.toJSON=RegExp.prototype.toString;if(typeof module!="undefined")module.exports=Query;else if(typeof define!="undefined"&&define.amd)define("query",[],function(){return Query});else if(typeof window!="undefined")window.Query=Query;else if(typeof GLOBAL!=undefined&&GLOBAL.global)GLOBAL.global.Query=Query;return Query})(this);