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some changes #19

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d325fef
values() fix with tests
dvv Dec 1, 2010
04c4086
values() fix to hold result same-sized
dvv Dec 1, 2010
49ea9a6
cache[exports.primaryKey] --> cache.pk; improved .normalize()
dvv Dec 1, 2010
cc133ba
normalize() + encode() === smart morpher
dvv Dec 1, 2010
3ec8f1c
defaults. TODO: remove .cache
dvv Dec 1, 2010
8dcca15
drop .cache, nobody but .normalize() needs it
dvv Dec 1, 2010
b6c5af1
hz
dvv Dec 1, 2010
664181c
always set totalCount in limit()
dvv Dec 1, 2010
b5fa6cc
normalize()
dvv Dec 2, 2010
0b52f4f
encode undefined
dvv Dec 2, 2010
f59626a
allow more than 2 params to filter helper
dvv Dec 2, 2010
85e6938
fixed null dereference in evaluateProperty()
dvv Dec 5, 2010
3672df9
failing tests for select()
dvv Dec 5, 2010
ba714f0
evaluateProperty() -- fix for empty parts
dvv Dec 6, 2010
d1c079f
remove pk caching from parser; added to normalizer()
dvv Dec 7, 2010
86f0a60
test updated
dvv Dec 7, 2010
a946214
primary key mapping
dvv Dec 16, 2010
8c3d611
ES5 workaround
dvv Jan 13, 2011
8d7004c
Query(['a','b']) ---> Query().in('id',['a','b'])
dvv Jan 21, 2011
3ae3727
.where() to apply another query
dvv Jan 21, 2011
864f600
try to merge files
dvv Jan 23, 2011
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35 changes: 22 additions & 13 deletions lib/js-array.js
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@ exports.jsOperatorMap = {
};
exports.operators = {
sort: function(){
// TODO: support single argument: {'a.b.c': false, 'd': true} to denote sort(a.b.c,-d)?
var terms = [];
for(var i = 0; i < arguments.length; i++){
var sortAttribute = arguments[i];
Expand All @@ -46,8 +47,8 @@ exports.operators = {
});
return this;
},
match: filter(function(value, regex){
return new RegExp(regex).test(value);
match: filter(function(value, str, prm){
return new RegExp(str, prm).test(value);
}),
"in": filter(function(value, values){
return values.indexOf(value) > -1;
Expand Down Expand Up @@ -114,18 +115,14 @@ exports.operators = {
for (var i in object) if (object.hasOwnProperty(i)) {
selected[i] = object[i];
}
// FIXME: evaluateProperty(). Feasible for exclusion?
for(var i = 0; i < argc; i++) {
delete selected[args[i]];
}
return selected;
});
},
values: function(first){
if(arguments.length == 1){
return this.map(function(object){
return object[first];
});
}
var args = arguments;
var argc = arguments.length;
return this.map(function(object){
Expand All @@ -137,7 +134,12 @@ exports.operators = {
} else {
for(var i = 0; i < argc; i++){
var propertyName = args[i];
selected.push(object[propertyName]);
var value = evaluateProperty(object, propertyName);
selected.push(value);
}
// N.B. single argument? -> flatten array
if(args.length === 1){
return selected[0];
}
}
return selected;
Expand All @@ -147,10 +149,13 @@ exports.operators = {
var totalCount = this.length;
start = start || 0;
var sliced = this.slice(start, start + limit);
if(maxCount){
//if(maxCount){
if(true){
if (totalCount < start) start = 0;
sliced.start = start;
sliced.end = start + sliced.length - 1;
sliced.totalCount = Math.min(totalCount, typeof maxCount === "number" ? maxCount : Infinity);
//sliced.totalCount = Math.min(totalCount, typeof maxCount === "number" ? maxCount : Infinity);
sliced.totalCount = totalCount;
}
return sliced;
},
Expand Down Expand Up @@ -278,11 +283,13 @@ function filter(condition, not){
second = property;
property = undefined;
}
var args = arguments;
var args = Array.prototype.slice.call(arguments, 0);
var filtered = [];
for(var i = 0, length = this.length; i < length; i++){
var item = this[i];
if(condition(evaluateProperty(item, property), second)){
//if(condition(evaluateProperty(item, property), second)){
args[0] = evaluateProperty(item, property);
if(condition.apply(this, args)){
filtered.push(item);
}
}
Expand All @@ -306,7 +313,9 @@ exports.evaluateProperty = evaluateProperty;
function evaluateProperty(object, property){
if(property instanceof Array){
property.forEach(function(part){
object = object[decodeURIComponent(part)];
// TODO: will it be supporting $ref?
if (part)
object = object && object[decodeURIComponent(part)];
});
return object;
}else if(typeof property == "undefined"){
Expand Down
30 changes: 10 additions & 20 deletions lib/parser.js
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Original file line number Diff line number Diff line change
Expand Up @@ -15,17 +15,17 @@ var operatorMap = {
"!=": "ne"
};

exports.primaryKeyName = 'id';
exports.lastSeen = ['sort', 'select', 'values', 'limit'];
exports.jsonQueryCompatible = true;

function parse(/*String|Object*/query, parameters){
if (typeof query === "undefined" || query === null)
query = '';
var term = new exports.Query();
var topTerm = term;
topTerm.cache = {}; // room for lastSeen params
if(typeof query === "object"){
if (Array.isArray(query)){
return Query().in('id', query);
}
if(query instanceof exports.Query){
return query;
}
Expand Down Expand Up @@ -96,17 +96,6 @@ function parse(/*String|Object*/query, parameters){
}
else if(propertyOrValue || delim === ','){
term.args.push(stringToValue(propertyOrValue, parameters));

// cache the last seen sort(), select(), values() and limit()
if (exports.lastSeen.indexOf(term.name) >= 0) {
topTerm.cache[term.name] = term.args;
}
// cache the last seen id equality
if (term.name === 'eq' && term.args[0] === exports.primaryKeyName) {
var id = term.args[1];
if (id && !(id instanceof RegExp)) id = id.toString();
topTerm.cache[exports.primaryKeyName] = id;
}
}
return "";
});
Expand All @@ -121,10 +110,6 @@ function parse(/*String|Object*/query, parameters){
function call(newTerm){
term.args.push(newTerm);
term = newTerm;
// cache the last seen sort(), select(), values() and limit()
if (exports.lastSeen.indexOf(term.name) >= 0) {
topTerm.cache[term.name] = term.args;
}
}
function setConjunction(operator){
if(!term.name){
Expand All @@ -137,9 +122,14 @@ function parse(/*String|Object*/query, parameters){
function removeParentProperty(obj) {
if(obj && obj.args){
delete obj.parent;
obj.args.forEach(removeParentProperty);
if (obj.args.forEach) {
obj.args.forEach(removeParentProperty);
} else {
for (var fe = 0; fe < obj.args.length; fe += 1)
removeParentProperty(obj.args[fe]);
}
}
return obj;
return obj;
};
removeParentProperty(topTerm);
return topTerm;
Expand Down
135 changes: 92 additions & 43 deletions lib/query.js
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@ parser.Query = function(seed, params){
};
exports.Query = parser.Query;
//TODO:THE RIGHT WAY IS:exports.knownOperators = Object.keys(jsarray.operators || {}).concat(Object.keys(jsarray.jsOperatorMap || {}));
exports.knownOperators = ["sort", "in", "not", "any", "all", "or", "and", "select", "exclude", "values", "limit", "distinct", "recurse", "aggregate", "between", "sum", "mean", "max", "min", "count", "first", "one", "eq", "ne", "le", "ge", "lt", "gt"];
exports.knownOperators = ["sort", "match", "in", "out", "contains", "excludes", "all", "or", "and", "select", "values", "limit", "distinct", "recurse", "aggregate", "between", "sum", "mean", "max", "min", "count", "first", "one", "eq", "ne", "le", "ge", "lt", "gt"];
exports.knownScalarOperators = ["mean", "sum", "min", "max", "count", "first", "one"];
exports.arrayMethods = ["forEach", "reduce", "map", "filter", "indexOf", "some", "every"];

Expand All @@ -46,6 +46,11 @@ Query.prototype.toString = function(){
queryToString(this);
};

Query.prototype.where = function(query){
this.args = this.args.concat(parseQuery(query).args);
return this;
}

function queryToString(part) {
if (part instanceof Array) {
return '('+part.map(function(arg) {
Expand Down Expand Up @@ -78,6 +83,7 @@ function encodeString(s) {
exports.encodeValue = function(val) {
var encoded;
if (val === null) val = 'null';
if (typeof val === 'undefined') return val;
if (val !== parser.converters["default"]('' + (
val.toISOString && val.toISOString() || val.toString()
))) {
Expand All @@ -90,7 +96,7 @@ exports.encodeValue = function(val) {
val = encodeString(val.substring(1, i));
encoded = true;
}
if(type === "object"){
if(val instanceof Date){
type = "epoch";
val = val.getTime();
encoded = true;
Expand Down Expand Up @@ -142,89 +148,103 @@ exports.updateQueryMethods();
/* recursively iterate over query terms calling 'fn' for each term */
Query.prototype.walk = function(fn, options){
options = options || {};
function walk(name, terms){
(terms || []).forEach(function(term, i, arr) {
function walk(){
var self = this;
this.args = this.args.map(function(term, i, arr) {
var args, func, key, x;
term != null ? term : term = {};
func = term.name;
args = term.args;
if (!func || !args) {
return;
}
var f;
if (args[0] instanceof Query) {
walk.call(this, func, args);
f = walk;
} else {
var newTerm = fn.call(this, func, args);
if (newTerm && newTerm.name && newTerm.args)
arr[i] = newTerm;
f = fn;
}
});
return f.call(term);
}).filter(function(x){return x;});
return this;
}
walk.call(this, this.name, this.args);
};

/* append a new term */
Query.prototype.push = function(term){
this.args.push(term);
return this;
var q = walk.call(this);
return q;
};

/* disambiguate query */
Query.prototype.normalize = function(options){
options = options || {};
options.primaryKey = options.primaryKey || 'id';
options.clear = options.clear || [];
options.map = options.map || {};
var result = {
original: this,
search: this,
last: {},
sort: [],
limit: [Infinity, 0, Infinity],
skip: 0,
limit: Infinity,
sortObj: {},
sortArr: [],
limit: [Infinity, 0],
select: [],
selectObj: {},
selectArr: [],
values: false
};
var plusMinus = {
// [plus, minus]
sort: [1, -1],
select: [1, 0]
};
function normal(func, args){
function normal(){
var func = this.name;
var args = this.args;
if (!func || !args) return;
// rename props
args = this.args = args.map(function(x){return x === 'id' || x === '-id' || x === '+id' ? x.replace('id', options.primaryKey) : x});
//console.log('MAPPED', args);
// cache some parameters
if (func === 'sort' || func === 'select') {
if (func === 'sort' || func === 'select' || func === 'values') {
if (func === 'values') {
func = 'select';
result.values = true;
}
result[func] = args;
var pm = plusMinus[func];
result[func+'Arr'] = result[func].map(function(x){
if (x instanceof Array) x = x.join('.');
var o = {};
var a = /([-+]*)(.+)/.exec(x);
o[a[2]] = pm[(a[1].charAt(0) === '-')*1];
return o;
});
result[func+'Obj'] = {};
result[func].forEach(function(x){
result[func+'Arr'] = result[func].map(function(x, index){
if (x instanceof Array) x = x.join('.');
var a = /([-+]*)(.+)/.exec(x);
result[func+'Obj'][a[2]] = pm[(a[1].charAt(0) === '-')*1];
var v = pm[(a[1].charAt(0) === '-')*1] * (index+1);
result[func+'Obj'][a[2]] = v;
return {name: a[2], value: v};
});
} else if (func === 'limit') {
// validate limit() args to be numbers, with sane defaults
var limit = args;
result.skip = +limit[1] || 0;
limit = +limit[0] || 0;
var skip = +limit[1] || 0;
limit = +limit[0] || Infinity;
if (options.hardLimit && limit > options.hardLimit)
limit = options.hardLimit;
result.limit = limit;
result.limit = [limit, skip];
result.needCount = true;
} else if (func === 'values') {
// N.B. values() just signals we want array of what we select()
result.values = true;
} else if (func === 'eq') {
// cache primary key equality -- useful to distinguish between .get(id) and .query(query)
var t = typeof args[1];
//if ((args[0] instanceof Array ? args[0][args[0].length-1] : args[0]) === options.primaryKey && ['string','number'].indexOf(t) >= 0) {
if (args[0] === options.primaryKey && ['string','number'].indexOf(t) >= 0) {
result.pk = String(args[1]);
} else {
if (func === 'eq') {
// cache first primary key equality -- useful to distinguish between .get(id) and .query(query)
if (args[0] === options.primaryKey && ['string','number'].indexOf(typeof args[1]) >= 0) {
if (!result.pk)
result.pk = String(args[1]);
}
}
// collect search conditions
var arg0 = args[0];
if (arg0 instanceof Array) arg0 = arg0.join('/');
//if (!result.cond[arg0])
// result.cond[arg0] = [];
//result.cond[arg0].push(this);
// memorize the last condition
result.last[arg0] = this;
// clear all conditions on fields specified in options.clear[]
return options.clear.indexOf(this.args[0]) >= 0 ? undefined : this;
}
// cache search conditions
//if (options.known[func])
Expand All @@ -233,7 +253,36 @@ Query.prototype.normalize = function(options){
func = options.map[func];
}*/
}

// normalize
this.walk(normal);

result.filter = function(query){
var Q = String(query);
//console.log('ADD', Q, this.search);
this.search.args = this.search.args.filter(function(x){
return String(x) !== Q;
});
/*var args = query.args[0].args;
var arg0 = args[0];
if (arg0 instanceof Array) arg0 = arg0.join('/');
if (!this.cond[arg0])
this.cond[arg0] = [];
this.cond[arg0].push(query.args[0]);*/
this.search.args.push(query.args[0]);
return this;
};

result.toString = function(){
var q = this.search;
['sort', 'select', 'limit', 'values'].forEach(function(op){
var args = result[op];
if (args instanceof Array && args.length)
q = q[op].apply(q, args);
});
return q.toString();
};

return result;
};

Expand Down
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