mongo-portable/.c9/metadata/workspace/browser/Selector.js

Portable Pure JS MongoDB - Based on Monglodb (https://github.com/euforic/monglodb.git) by Christian Sullivan (http://RogueSynaptics.com)

{"filter":false,"title":"Selector.js","tooltip":"/browser/Selector.js","undoManager":{"mark":0,"position":0,"stack":[[{"start":{"row":6,"column":0},"end":{"row":445,"column":26},"action":"remove","lines":["var logger = null;","","class Selector {","    constructor(selector, type = Selector.MATCH_SELECTOR) {","        logger = Logger.instance;","        ","        this.selector_compiled = null;","\t\t","\t\tif (type === Selector.MATCH_SELECTOR) {","\t\t\tthis.selector_compiled = this.compile(selector);","\t\t} else if (type === Selector.SORT_SELECTOR) {","\t\t\treturn this.compileSort(selector);","\t\t} else if (type === Selector.FIELD_SELECTOR) {","\t\t\treturn this.compileFields(selector);","\t\t} else {","\t\t\tlogger.throw(\"You need to specify the selector type\");","\t\t}","    }","    ","    test(doc) {","        return this.selector_compiled.test(doc);","    }","    ","    compile(selector) {","\t\tif (_.isNil(selector)) {","\t\t\tlogger.debug('selector -> null');","\t\t\t","\t\t\tselector = {};","\t\t} else {","\t\t\tlogger.debug('selector -> not null');","\t\t\t","\t\t\tif (!selector || (_.hasIn(selector, '_id') && !selector._id)) {","\t\t\t\tlogger.debug('selector -> false value || { _id: false value }');","\t\t\t\t","\t\t\t\tselector = {","\t\t\t\t\t_id: false","\t\t\t\t};","\t\t\t}","\t\t}","\t\t","\t\tif (_.isFunction(selector)) {","\t\t\tlogger.debug('selector -> function(doc) { ... }');","\t\t\t","\t\t\t//_initFunction.call(matcher, selector);","\t\t\tthis.clauses = [{","\t\t\t\tkind: 'function',","\t\t\t\tvalue: selector","\t\t\t}];","\t\t\t","\t\t\tlogger.debug('clauses created: ' + JSON.stringify(this.clauses));","\t\t} else if (_.isString(selector) || _.isNumber(selector)) {","\t\t\tlogger.debug('selector -> \"123456789\" || 123456798');","\t\t\t","\t\t\tselector = {","\t\t\t\t_id: selector","\t\t\t};","\t\t\t","\t\t\t//_initObject.call(matcher, selector);","\t\t\tthis.clauses = _buildSelector(selector);","\t\t\t","\t\t\tlogger.debug('clauses created: ' + JSON.stringify(this.clauses));","\t\t} else {","\t\t\tlogger.debug('selector -> { field: value }');","\t\t\t","\t\t\t//_initObject.call(matcher, selector);","\t\t\tthis.clauses = _buildSelector(selector);","\t\t\t","\t\t\tlogger.debug('clauses created: ' + JSON.stringify(this.clauses));","\t\t}","\t\t","\t\tvar matcher = new SelectorMatcher(this);","\t\t","\t\treturn matcher;","    }","    ","    compileSort(spec) {","        if (_.isNil(spec))  {","            return function () {","                return 0;","            };","        }","        ","        var keys = [];","        var asc = [];","        ","        if (_.isString(spec)) {","            spec = spec.replace(/( )+/ig, ' ').trim();","            ","            if (spec.indexOf(',') !== -1) {","                // Replace commas by spaces, and treat it as a spaced-separated string","                return this.compileSort(spec.replace(/,/ig, ' '));","            } else if (spec.indexOf(' ') !== -1) {","                var fields = spec.split(' ');","                ","                for (var i = 0; i < fields.length; i++) {","                    var field = fields[i].trim();","                    ","                    if ((field === 'desc'  || field === 'asc') ||","                        (field === '-1'    || field === '1') ||","                        (field === 'false' || field === 'true')) {","                            ","                        throw Error(\"Bad sort specification: \", JSON.stringify(spec));","                    } else {","                        var next = _.toString(fields[i+1]);","                        ","                        if (next === 'desc' || next === 'asc') {","                            keys.push(field);","                            asc.push((next === 'asc') ? true : false);","                            ","                            i++;","                        } else if (next === '-1' || next === '1') {","                            keys.push(field);","                            asc.push((next === '1') ? true : false);","                            ","                            i++;","                        } else if (next === 'false' || next === 'true') {","                            keys.push(field);","                            asc.push((next === 'true') ? true : false);","                            ","                            i++;","                        } else {","                            keys.push(field);","                            asc.push(true); // Default sort","                        }","                    }","                }","            } else {","                //.sort(\"field1\")","                ","                keys.push(spec);","                asc.push(true);","            }","        } else if (_.isArray(spec)) {","            // Join the array with spaces, and treat it as a spaced-separated string","            return this.compileSort(spec.join(' '));","            // for (var i = 0; i < spec.length; i++) {","            //     if (_.isString(spec[i])) {","            //         keys.push(spec[i]);","            //         asc.push(true);","            //     } else {","            //         keys.push(spec[i][0]);","            //         asc.push(spec[i][1] !== \"desc\");","            //     }","            // }","        } else if (_.isPlainObject(spec)) {","            // TODO Nested path -> .sort({ \"field1.field12\": \"asc\" })","            var _spec = [];","            for (var key in spec) {","                if (_.hasIn(spec, key)) {","                    _spec.push(key);","                    _spec.push(spec[key]);","                }","            }","            ","            return this.compileSort(_spec);","        } else {","            throw Error(\"Bad sort specification: \", JSON.stringify(spec));","        }","    ","        // return {keys: keys, asc: asc};","        return function(a, b) {","            var x = 0;","            ","            for (var i = 0; i < keys.length; i++) {","                if (i !== 0 && x !== 0) return x;   // Non reachable?","                ","                ","                // x = Selector._f._cmp(a[JSON.stringify(keys[i])], b[JSON.stringify(keys[i])]);","                x = SelectorMatcher.cmp(a[keys[i]], b[keys[i]]);","                ","                if (!asc[i]) {","                    x *= -1;","                }","            }","            ","            return x;","        };","        ","        // eval() does not return a value in IE8, nor does the spec say it","        // should. Assign to a local to get the value, instead.","        ","        // var _func;","        // var code = \"_func = (function(c){return function(a,b){var x;\";","        // for (var i = 0; i < keys.length; i++) {","        //     if (i !== 0) {","        //         code += \"if(x!==0)return x;\";","        //     }","    ","        //     code += \"x=\" + (asc[i] ? \"\" : \"-\") + \"c(a[\" + JSON.stringify(keys[i]) + \"],b[\" + JSON.stringify(keys[i]) + \"]);\";","        // }","    ","        // code += \"return x;};})\";","    ","        // eval(code);","    ","        // return _func(Selector._f._cmp);","    }","    ","    compileFields(spec) {","        var projection = {};","        ","        if (_.isNil(spec)) return projection;","        ","        if (_.isString(spec)) {","            spec = spec.replace(/( )+/ig, ' ').trim();","            ","            if (spec.indexOf(',') !== -1) {","                // Replace commas by spaces, and treat it as a spaced-separated string","                return this.compileFields(spec.replace(/,/ig, ' '));","            } else if (spec.indexOf(' ') !== -1) {","                var fields = spec.split(' ');","                ","                for (var i = 0; i < fields.length; i++) {","                    var field = fields[i].trim();","                    ","                    if ((field === '-1'    || field === '1') ||","                        (field === 'false' || field === 'true')) {","                            ","                        throw Error(\"Bad fields specification: \", JSON.stringify(spec));","                    } else {","                        var next = _.toString(fields[i+1]);","                        ","                        if (next === '-1' || next === '1') {","                            if (next === '-1') {","                                for (let _key in projection) {","                                    if (field !== '_id' && projection[_key] === 1) {","                                        throw new Error(\"A projection cannot contain both include and exclude specifications\");","                                    }","                                }","                                ","                                projection[field] = -1;","                            } else {","                                projection[field] = 1;","                            }","                            ","                            i++;","                        } else if (next === 'false' || next === 'true') {","                            if (next === 'false') {","                                if (field === '_id') {","                                    projection[field] = -1;","                                } else {","                                    throw new Error(\"A projection cannot contain both include and exclude specifications\");","                                }","                            } else {","                                projection[field] = 1;","                            }","                            ","                            i++;","                        } else {","                            projection[field] = 1;","                        }","                    }","                }","            } else if (spec.length > 0) {","                //.find({}, \"field1\")","                ","                projection[spec] = 1;","            }","        } else if (_.isArray(spec)) {","            // Join the array with spaces, and treat it as a spaced-separated string","            return this.compileFields(spec.join(' '));","        } else if (_.isPlainObject(spec)) {","            // TODO Nested path -> .find({}, { \"field1.field12\": \"asc\" })","            var _spec = [];","            for (var key in spec) {","                if (_.hasIn(spec, key)) {","                    _spec.push(key);","                    _spec.push(spec[key]);","                }","            }","            ","            return this.compileFields(_spec);","        } else {","            throw Error(\"Bad fields specification: \", JSON.stringify(spec));","        }","        ","        return projection;","    }","\t","\t/* STATIC METHODS */","\tstatic isSelectorCompiled(selector) {","\t\tif (!_.isNil(selector) && (","\t\t    selector instanceof SelectorMatcher || (selector instanceof Selector && ","\t\t                                            selector.selector_compiled instanceof SelectorMatcher)","\t    )) {","\t\t\treturn true;","\t\t} else {","\t\t\treturn false;","\t\t}","\t}","\t","\tstatic matches(selector, doc) {","        return (new Selector(selector)).test(doc);","    }","}","","var _buildSelector = function(selector) {","\tlogger.debug('Called: _buildSelector');","    ","    var clauses = [];","    ","    for (var key in selector) {","        var value = selector[key];","        ","        if (key.charAt(0) === '$') {","            logger.debug('selector -> operator => { $and: [{...}, {...}] }');","            ","            clauses.push(_buildDocumentSelector(key, value));","        } else {","            logger.debug('selector -> plain => { field1: <value> }');","            ","            clauses.push(_buildKeypathSelector(key, value));","        }","    }","    ","    return clauses;","};","","var _buildDocumentSelector = function(key, value) {","    var clause = {};","    ","    switch (key) {","        case '$or':","        case '$and':","        case '$nor':","            clause.key = key.replace(/\\$/, '');","            // The rest will be handled by '_operator_'","        case '_operator_':","            // Generic handler for operators ($or, $and, $nor)","            ","            clause.kind = 'operator';","            clause.type = 'array';","            ","            clause.value = [];","            for (let i = 0; i < value.length; i++) {","                clause.value = _.union(clause.value, _buildSelector(value[i]));","            }","            ","            break;","        default:","            throw Error(\"Unrecogized key in selector: \", key);","    }","    ","    // TODO cases: $where, $elemMatch","    ","    logger.debug('clause created: ' + JSON.stringify(clause));","    ","    return clause;","};","","var _buildKeypathSelector = function (keypath, value) {","    logger.debug('Called: _buildKeypathSelector');","    ","    var clause = {};","    ","    clause.value = value;","    ","    if (_.isNil(value)) {","        logger.debug('clause of type null');","        ","        clause.type = 'null';","    } else if (_.isRegExp(value)) {","        logger.debug('clause of type RegExp');","","        clause.type = 'regexp';","        ","        var source = value.toString().split('/');","","        clause.value = {","            $regex: source[1]   // The first item splitted is an empty string","        };","        ","        if (source[2] != \"\") {","            clause.value[\"$options\"] = source[2];","        }","    } else if (_.isArray(value)) {","        logger.debug('clause of type Array');","        ","        clause.type = 'array';","    } else if (_.isString(value)) {","        logger.debug('clause of type String');","        ","        clause.type = 'string';","    } else if (_.isNumber(value)) {","        logger.debug('clause of type Number');","        ","        clause.type = 'number';","    } else if (_.isBoolean(value)) {","        logger.debug('clause of type Boolean');","        ","        clause.type = 'boolean';","    } else if (_.isFunction(value)) {","        logger.debug('clause of type Function');","        ","        clause.type = 'function';","    } else if (_.isPlainObject(value)) {","        var literalObject = true;","        for (var key in value) {","            if (key.charAt(0) === '$') {","                literalObject = false;","                break;","            }","        }","        ","        if (literalObject) {","            logger.debug('clause of type Object => { field: { field_1: <value>, field_2: <value> } }');","            ","            clause.type = 'literal_object';","        } else {","            logger.debug('clause of type Operator => { field: { $gt: 2, $lt 5 } }');","            ","            clause.type = 'operator_object';","        }","    } else {","        clause.type = '__invalid__';","    }","    ","    var parts = keypath.split('.');","    if (parts.length > 1) {","        logger.debug('clause over Object field => { \"field1.field1_2\": <value> }');","        ","        clause.kind = 'object';","        clause.key = parts;","    } else {","        logger.debug('clause over Plain field => { \"field\": <value> }');","        ","        clause.kind = 'plain';","        clause.key = parts[0];","    }","    ","    logger.debug('clause created: ' + JSON.stringify(clause));","    ","    return clause;","};","","Selector.MATCH_SELECTOR = 'match';","Selector.SORT_SELECTOR = 'sort';","Selector.FIELD_SELECTOR = 'field';","","module.exports = Selector;"],"id":2},{"start":{"row":6,"column":0},"end":{"row":462,"column":26},"action":"insert","lines":["var logger = null;","","class Selector {","    constructor(selector, type = Selector.MATCH_SELECTOR) {","        logger = Logger.instance;","        ","        this.selector_compiled = null;","\t\t","\t\tif (type === Selector.MATCH_SELECTOR) {","\t\t\tthis.selector_compiled = this.compile(selector);","\t\t} else if (type === Selector.SORT_SELECTOR) {","\t\t\treturn this.compileSort(selector);","\t\t} else if (type === Selector.FIELD_SELECTOR) {","\t\t\treturn this.compileFields(selector, false);","\t\t} else if (type === Selector.AGG_FIELD_SELECTOR) {","\t\t\treturn this.compileFields(selector, true);","\t\t} else {","\t\t\tlogger.throw(\"You need to specify the selector type\");","\t\t}","    }","    ","    test(doc) {","        return this.selector_compiled.test(doc);","    }","    ","    compile(selector) {","\t\tif (_.isNil(selector)) {","\t\t\tlogger.debug('selector -> null');","\t\t\t","\t\t\tselector = {};","\t\t} else {","\t\t\tlogger.debug('selector -> not null');","\t\t\t","\t\t\tif (!selector || (_.hasIn(selector, '_id') && !selector._id)) {","\t\t\t\tlogger.debug('selector -> false value || { _id: false value }');","\t\t\t\t","\t\t\t\tselector = {","\t\t\t\t\t_id: false","\t\t\t\t};","\t\t\t}","\t\t}","\t\t","\t\tif (_.isFunction(selector)) {","\t\t\tlogger.debug('selector -> function(doc) { ... }');","\t\t\t","\t\t\t//_initFunction.call(matcher, selector);","\t\t\tthis.clauses = [{","\t\t\t\tkind: 'function',","\t\t\t\tvalue: selector","\t\t\t}];","\t\t\t","\t\t\tlogger.debug('clauses created: ' + JSON.stringify(this.clauses));","\t\t} else if (_.isString(selector) || _.isNumber(selector)) {","\t\t\tlogger.debug('selector -> \"123456789\" || 123456798');","\t\t\t","\t\t\tselector = {","\t\t\t\t_id: selector","\t\t\t};","\t\t\t","\t\t\t//_initObject.call(matcher, selector);","\t\t\tthis.clauses = _buildSelector(selector);","\t\t\t","\t\t\tlogger.debug('clauses created: ' + JSON.stringify(this.clauses));","\t\t} else {","\t\t\tlogger.debug('selector -> { field: value }');","\t\t\t","\t\t\t//_initObject.call(matcher, selector);","\t\t\tthis.clauses = _buildSelector(selector);","\t\t\t","\t\t\tlogger.debug('clauses created: ' + JSON.stringify(this.clauses));","\t\t}","\t\t","\t\tvar matcher = new SelectorMatcher(this);","\t\t","\t\treturn matcher;","    }","    ","    compileSort(spec) {","        if (_.isNil(spec))  {","            return function () {","                return 0;","            };","        }","        ","        var keys = [];","        var asc = [];","        ","        if (_.isString(spec)) {","            spec = spec.replace(/( )+/ig, ' ').trim();","            ","            if (spec.indexOf(',') !== -1) {","                // Replace commas by spaces, and treat it as a spaced-separated string","                return this.compileSort(spec.replace(/,/ig, ' '));","            } else if (spec.indexOf(' ') !== -1) {","                var fields = spec.split(' ');","                ","                for (var i = 0; i < fields.length; i++) {","                    var field = fields[i].trim();","                    ","                    if ((field === 'desc'  || field === 'asc') ||","                        (field === '-1'    || field === '1') ||","                        (field === 'false' || field === 'true')) {","                            ","                        throw Error(\"Bad sort specification: \", JSON.stringify(spec));","                    } else {","                        var next = _.toString(fields[i+1]);","                        ","                        if (next === 'desc' || next === 'asc') {","                            keys.push(field);","                            asc.push((next === 'asc') ? true : false);","                            ","                            i++;","                        } else if (next === '-1' || next === '1') {","                            keys.push(field);","                            asc.push((next === '1') ? true : false);","                            ","                            i++;","                        } else if (next === 'false' || next === 'true') {","                            keys.push(field);","                            asc.push((next === 'true') ? true : false);","                            ","                            i++;","                        } else {","                            keys.push(field);","                            asc.push(true); // Default sort","                        }","                    }","                }","            } else {","                //.sort(\"field1\")","                ","                keys.push(spec);","                asc.push(true);","            }","        } else if (_.isArray(spec)) {","            // Join the array with spaces, and treat it as a spaced-separated string","            return this.compileSort(spec.join(' '));","            // for (var i = 0; i < spec.length; i++) {","            //     if (_.isString(spec[i])) {","            //         keys.push(spec[i]);","            //         asc.push(true);","            //     } else {","            //         keys.push(spec[i][0]);","            //         asc.push(spec[i][1] !== \"desc\");","            //     }","            // }","        } else if (_.isPlainObject(spec)) {","            // TODO Nested path -> .sort({ \"field1.field12\": \"asc\" })","            var _spec = [];","            for (var key in spec) {","                if (_.hasIn(spec, key)) {","                    _spec.push(key);","                    _spec.push(spec[key]);","                }","            }","            ","            return this.compileSort(_spec);","        } else {","            throw Error(\"Bad sort specification: \", JSON.stringify(spec));","        }","    ","        // return {keys: keys, asc: asc};","        return function(a, b) {","            var x = 0;","            ","            for (var i = 0; i < keys.length; i++) {","                if (i !== 0 && x !== 0) return x;   // Non reachable?","                ","                ","                // x = Selector._f._cmp(a[JSON.stringify(keys[i])], b[JSON.stringify(keys[i])]);","                x = SelectorMatcher.cmp(a[keys[i]], b[keys[i]]);","                ","                if (!asc[i]) {","                    x *= -1;","                }","            }","            ","            return x;","        };","        ","        // eval() does not return a value in IE8, nor does the spec say it","        // should. Assign to a local to get the value, instead.","        ","        // var _func;","        // var code = \"_func = (function(c){return function(a,b){var x;\";","        // for (var i = 0; i < keys.length; i++) {","        //     if (i !== 0) {","        //         code += \"if(x!==0)return x;\";","        //     }","    ","        //     code += \"x=\" + (asc[i] ? \"\" : \"-\") + \"c(a[\" + JSON.stringify(keys[i]) + \"],b[\" + JSON.stringify(keys[i]) + \"]);\";","        // }","    ","        // code += \"return x;};})\";","    ","        // eval(code);","    ","        // return _func(Selector._f._cmp);","    }","    ","    compileFields(spec, aggregation) {","        var projection = {};","        ","        if (_.isNil(spec)) return projection;","        ","        if (_.isString(spec)) {","            // trim surrounding and inner spaces","            spec = spec.replace(/( )+/ig, ' ').trim();","            ","            // Replace the commas by spaces","            if (spec.indexOf(',') !== -1) {","                // Replace commas by spaces, and treat it as a spaced-separated string","                return this.compileFields(spec.replace(/,/ig, ' '), aggregation);","            } else if (spec.indexOf(' ') !== -1) {","                var fields = spec.split(' ');","                ","                for (var i = 0; i < fields.length; i++) {","                    // Get the field from the spec (we will be working with pairs)","                    var field = fields[i].trim();","                    ","                    // If the first is not a field, throw error","                    if ((field === '-1'    || field === '1') ||","                        (field === 'false' || field === 'true')) {","                            ","                        throw Error(\"Bad fields specification: \", JSON.stringify(spec));","                    } else {","                        // Get the next item of the pair","                        var next = _.toString(fields[i+1]);","                        ","                        if (next === '-1' || next === '1') {","                            if (next === '-1') {","                                for (let _key in projection) {","                                    if (field !== '_id' && projection[_key] === 1) {","                                        throw new Error(\"A projection cannot contain both include and exclude specifications\");","                                    }","                                }","                                ","                                projection[field] = -1;","                            } else {","                                projection[field] = 1;","                            }","                            ","                            i++;","                        } else if (next === 'false' || next === 'true') {","                            if (next === 'false') {","                                if (field === '_id') {","                                    projection[field] = -1;","                                } else {","                                    throw new Error(\"A projection cannot contain both include and exclude specifications\");","                                }","                            } else {","                                projection[field] = 1;","                            }","                            ","                            i++;","                        } else if (aggregation && next.indexOf('$') === 0) {","                            projection[field] = next.replace('$', '');","                            ","                            i++;","                        } else {","                            projection[field] = 1;","                        }","                    }","                }","            } else if (spec.length > 0) {","                //.find({}, \"field1\")","                ","                projection[spec] = 1;","            }","        } else if (_.isArray(spec)) {","            // Join the array with spaces, and treat it as a spaced-separated string","            return this.compileFields(spec.join(' '), aggregation);","        } else if (_.isPlainObject(spec)) {","            // TODO Nested path -> .find({}, { \"field1.field12\": \"asc\" })","            var _spec = [];","            for (var key in spec) {","                if (_.hasIn(spec, key)) {","                    _spec.push(key);","                    _spec.push(spec[key]);","                }","            }","            ","            return this.compileFields(_spec, aggregation);","        } else {","            throw Error(\"Bad fields specification: \", JSON.stringify(spec));","        }","        ","        return projection;","    }","\t","\t/* STATIC METHODS */","\tstatic isSelectorCompiled(selector) {","\t\tif (!_.isNil(selector) && (","\t\t    selector instanceof SelectorMatcher || (selector instanceof Selector && ","\t\t                                            selector.selector_compiled instanceof SelectorMatcher)","\t    )) {","\t\t\treturn true;","\t\t} else {","\t\t\treturn false;","\t\t}","\t}","\t","\tstatic matches(selector, doc) {","        return (new Selector(selector)).test(doc);","    }","}","","var _buildSelector = function(selector) {","\tlogger.debug('Called: _buildSelector');","    ","    var clauses = [];","    ","    for (var key in selector) {","        var value = selector[key];","        ","        if (key.charAt(0) === '$') {","            logger.debug('selector -> operator => { $and: [{...}, {...}] }');","            ","            clauses.push(_buildDocumentSelector(key, value));","        } else {","            logger.debug('selector -> plain => { field1: <value> }');","            ","            clauses.push(_buildKeypathSelector(key, value));","        }","    }","    ","    return clauses;","};","","var _buildDocumentSelector = function(key, value) {","    var clause = {};","    ","    switch (key) {","        case '$or':","        case '$and':","        case '$nor':","            clause.key = key.replace(/\\$/, '');","            // The rest will be handled by '_operator_'","        case '_operator_':","            // Generic handler for operators ($or, $and, $nor)","            ","            clause.kind = 'operator';","            clause.type = 'array';","            ","            clause.value = [];","            for (let i = 0; i < value.length; i++) {","                clause.value = _.union(clause.value, _buildSelector(value[i]));","            }","            ","            break;","        default:","            throw Error(\"Unrecogized key in selector: \", key);","    }","    ","    // TODO cases: $where, $elemMatch","    ","    logger.debug('clause created: ' + JSON.stringify(clause));","    ","    return clause;","};","","var _buildKeypathSelector = function (keypath, value) {","    logger.debug('Called: _buildKeypathSelector');","    ","    var clause = {};","    ","    clause.value = value;","    ","    if (_.isNil(value)) {","        logger.debug('clause of type null');","        ","        clause.type = 'null';","    } else if (_.isRegExp(value)) {","        logger.debug('clause of type RegExp');","","        clause.type = 'regexp';","        ","        var source = value.toString().split('/');","","        clause.value = {","            $regex: source[1]   // The first item splitted is an empty string","        };","        ","        if (source[2] != \"\") {","            clause.value[\"$options\"] = source[2];","        }","    } else if (_.isArray(value)) {","        logger.debug('clause of type Array');","        ","        clause.type = 'array';","    } else if (_.isString(value)) {","        logger.debug('clause of type String');","        ","        clause.type = 'string';","    } else if (_.isNumber(value)) {","        logger.debug('clause of type Number');","        ","        clause.type = 'number';","    } else if (_.isBoolean(value)) {","        logger.debug('clause of type Boolean');","        ","        clause.type = 'boolean';","    } else if (_.isFunction(value)) {","        logger.debug('clause of type Function');","        ","        clause.type = 'function';","    } else if (_.isPlainObject(value)) {","        var literalObject = true;","        for (var key in value) {","            if (key.charAt(0) === '$') {","                literalObject = false;","                break;","            }","        }","        ","        if (literalObject) {","            logger.debug('clause of type Object => { field: { field_1: <value>, field_2: <value> } }');","            ","            clause.type = 'literal_object';","        } else {","            logger.debug('clause of type Operator => { field: { $gt: 2, $lt 5 } }');","            ","            clause.type = 'operator_object';","        }","    } else if (value instanceof ObjectId) {","        logger.debug('clause of type ObjectId -> String');","        ","        clause.type = 'string';","        clause.value = value.toString();","    } else {","        clause.type = '__invalid__';","    }","    ","    var parts = keypath.split('.');","    if (parts.length > 1) {","        logger.debug('clause over Object field => { \"field1.field1_2\": <value> }');","        ","        clause.kind = 'object';","        clause.key = parts;","    } else {","        logger.debug('clause over Plain field => { \"field\": <value> }');","        ","        clause.kind = 'plain';","        clause.key = parts[0];","    }","    ","    logger.debug('clause created: ' + JSON.stringify(clause));","    ","    return clause;","};","","Selector.MATCH_SELECTOR = 'match';","Selector.SORT_SELECTOR = 'sort';","Selector.FIELD_SELECTOR = 'field';","Selector.AGG_FIELD_SELECTOR = 'project';","","module.exports = Selector;"]}]]},"ace":{"folds":[],"scrolltop":6558,"scrollleft":0,"selection":{"start":{"row":462,"column":26},"end":{"row":462,"column":26},"isBackwards":false},"options":{"guessTabSize":true,"useWrapMode":false,"wrapToView":true},"firstLineState":{"row":436,"state":"start","mode":"ace/mode/javascript"}},"timestamp":1470298238828,"hash":"eb07971ee846cb65c2ab67f0cf2ee68098dc70dd"}