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rdflib.js
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(function(root, undef) {
/**
* Utility functions for $rdf and the $rdf object itself
*/
if (typeof tabulator != 'undefined' && typeof tabulator.isExtension == 'undefined') tabulator.isExtension = false; // stand-alone library
if( typeof $rdf == 'undefined' ) {
var $rdf = {};
} else {
//dump("Internal error: RDF libray has already been loaded\n");
//dump("Internal error: $rdf type is "+typeof $rdf+"\n");
//dump("Internal error: $rdf.log type is "+typeof $rdf.log+"\n");
//dump("Internal error: $rdf.log.error type is "+typeof $rdf.log.error+"\n");
return $rdf;
throw "Internal error: RDF libray has already been loaded: $rdf already exists";
};
/**
* @class a dummy logger
Note to implement this using the Firefox error console see
https://developer.mozilla.org/en/nsIConsoleService
*/
//dump("@@ rdf/util.js test RESET RDF LOGGER $rdf.log.error)\n");
if($rdf.log != undefined) {
//dump("WTF util.js:" + $rdf.log);
throw "Internal Error: $rdf.log already defined, util.js: " + $rdf.log;
}
$rdf.log = {
'debug':function(x) {return;},
'warn':function(x) {return;},
'info':function(x) {return;},
'error':function(x) {return;},
'success':function(x) {return;},
'msg':function(x) {return;}
}
/**
* @class A utility class
*/
$rdf.Util = {
/** A simple debugging function */
'output': function (o) {
var k = document.createElement('div')
k.textContent = o
document.body.appendChild(k)
},
/**
* A standard way to add callback functionality to an object
**
** Callback functions are indexed by a 'hook' string.
**
** They return true if they want to be called again.
**
*/
'callbackify': function (obj,callbacks) {
obj.callbacks = {}
for (var x=callbacks.length-1; x>=0; x--) {
obj.callbacks[callbacks[x]] = [];
}
obj.addHook = function (hook) {
if (!obj.callbacks[hook])
obj.callbacks[hook] = [];
}
obj.addCallback = function (hook, func) {
obj.callbacks[hook].push(func);
}
obj.removeCallback = function (hook, funcName) {
for (var i=0;i<obj.callbacks[hook].length;i++){
if (obj.callbacks[hook][i].name==funcName){
obj.callbacks[hook].splice(i,1);
return true;
}
}
return false;
}
obj.insertCallback=function (hook,func){
obj.callbacks[hook].unshift(func);
}
obj.fireCallbacks = function (hook, args) {
var newCallbacks = []
var replaceCallbacks = []
var len = obj.callbacks[hook].length
// $rdf.log.info('!@$ Firing '+hook+' call back with length'+len);
for (var x=len-1; x>=0; x--) {
// $rdf.log.info('@@ Firing '+hook+' callback '+ obj.callbacks[hook][x])
if (obj.callbacks[hook][x].apply(obj,args)) {
newCallbacks.push(obj.callbacks[hook][x])
}
}
for (var x=newCallbacks.length-1; x>=0; x--) {
replaceCallbacks.push(newCallbacks[x])
}
for (var x=len; x<obj.callbacks[hook].length; x++) {
replaceCallbacks.push(obj.callbacks[hook][x])
}
obj.callbacks[hook] = replaceCallbacks
}
},
/**
* A standard way to create XMLHttpRequest objects
*/
'XMLHTTPFactory': function () {
if (typeof module != 'undefined' && module && module.exports) { //Node.js
var XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;
return new XMLHttpRequest()
}
if (typeof tabulator != 'undefined' && tabulator.isExtension) {
return Components.
classes["@mozilla.org/xmlextras/xmlhttprequest;1"].
createInstance().QueryInterface(Components.interfaces.nsIXMLHttpRequest);
} else if (window.XMLHttpRequest) {
return new window.XMLHttpRequest()
}
else if (window.ActiveXObject) {
try {
return new ActiveXObject("Msxml2.XMLHTTP")
} catch (e) {
return new ActiveXObject("Microsoft.XMLHTTP")
}
}
else {
return false
}
},
'DOMParserFactory': function () {
if(tabulator && tabulator.isExtension) {
return Components.classes["@mozilla.org/xmlextras/domparser;1"]
.getService(Components.interfaces.nsIDOMParser);
} else if ( window.DOMParser ){
return new DOMParser();
} else if ( window.ActiveXObject ) {
return new ActiveXObject( "Microsoft.XMLDOM" );
} else {
return false;
}
},
/**
* Returns a hash of headers and values
**
** @@ Bug: Assumes that each header only occurs once
** Also note that a , in a header value is just the same as having two headers.
*/
'getHTTPHeaders': function (xhr) {
var lines = xhr.getAllResponseHeaders().split("\n")
var headers = {}
var last = undefined
for (var x=0; x<lines.length; x++) {
if (lines[x].length > 0) {
var pair = lines[x].split(': ')
if (typeof pair[1] == "undefined") { // continuation
headers[last] += "\n"+pair[0]
} else {
last = pair[0].toLowerCase()
headers[last] = pair[1]
}
}
}
return headers
},
'dtstamp': function () {
var now = new Date();
var year = now.getYear() + 1900;
var month = now.getMonth() + 1;
var day = now.getDate();
var hour = now.getUTCHours();
var minute = now.getUTCMinutes();
var second = now.getSeconds();
if (month < 10) month = "0" + month;
if (day < 10) day = "0" + day;
if (hour < 10) hour = "0" + hour;
if (minute < 10) minute = "0" + minute;
if (second < 10) second = "0" + second;
return year + "-" + month + "-" + day + "T"
+ hour + ":" + minute + ":" + second + "Z";
},
'enablePrivilege': ((typeof netscape != 'undefined') && (typeof netscape.security.PrivilegeManager != 'undefined') && netscape.security.PrivilegeManager.enablePrivilege) || function() { return; },
'disablePrivilege': ((typeof netscape != 'undefined') && (typeof netscape.security.PrivilegeManager != 'undefined') && netscape.security.PrivilegeManager.disablePrivilege) || function() { return; },
'RDFArrayRemove': function(a, x) { //removes all statements equal to x from a
for(var i=0; i<a.length; i++) {
//TODO: This used to be the following, which didnt always work..why
//if(a[i] == x)
if (a[i].subject.sameTerm( x.subject ) &&
a[i].predicate.sameTerm( x.predicate ) &&
a[i].object.sameTerm( x.object ) &&
a[i].why.sameTerm( x.why )) {
a.splice(i,1);
return;
}
}
throw "RDFArrayRemove: Array did not contain " + x + " " + x.why;
},
'string_startswith': function(str, pref) { // missing library routines
return (str.slice(0, pref.length) == pref);
},
// This is the callback from the kb to the fetcher which is used to
// load ontologies of the data we load.
'AJAR_handleNewTerm': function(kb, p, requestedBy) {
var sf = null;
if( typeof kb.fetcher != 'undefined' ) {
sf = kb.fetcher;
} else {
return;
}
if (p.termType != 'symbol') return;
var docuri = $rdf.Util.uri.docpart(p.uri);
var fixuri;
if (p.uri.indexOf('#') < 0) { // No hash
// @@ major hack for dbpedia Categories, which spread indefinitely
if ($rdf.Util.string_startswith(p.uri, 'http://dbpedia.org/resource/Category:')) return;
/*
if (string_startswith(p.uri, 'http://xmlns.com/foaf/0.1/')) {
fixuri = "http://dig.csail.mit.edu/2005/ajar/ajaw/test/foaf"
// should give HTTP 303 to ontology -- now is :-)
} else
*/
if ($rdf.Util.string_startswith(p.uri, 'http://purl.org/dc/elements/1.1/')
|| $rdf.Util.string_startswith(p.uri, 'http://purl.org/dc/terms/')) {
fixuri = "http://dublincore.org/2005/06/13/dcq";
//dc fetched multiple times
} else if ($rdf.Util.string_startswith(p.uri, 'http://xmlns.com/wot/0.1/')) {
fixuri = "http://xmlns.com/wot/0.1/index.rdf";
} else if ($rdf.Util.string_startswith(p.uri, 'http://web.resource.org/cc/')) {
// $rdf.log.warn("creative commons links to html instead of rdf. doesn't seem to content-negotiate.");
fixuri = "http://web.resource.org/cc/schema.rdf";
}
}
if (fixuri) {
docuri = fixuri
}
if (sf && sf.getState(docuri) != 'unrequested') return;
if (fixuri) { // only give warning once: else happens too often
$rdf.log.warn("Assuming server still broken, faking redirect of <" + p.uri +
"> to <" + docuri + ">")
}
sf.requestURI(docuri, requestedBy);
}, //AJAR_handleNewTerm
'ArrayIndexOf': function(arr, item, i) {
i || (i = 0);
var length = arr.length;
if (i < 0) i = length + i;
for (; i < length; i++)
if (arr[i] === item) return i;
return -1;
}
};
////////////////// find the variables in a graph
// SHALLOW
// used?
//
$rdf.Util.variablesIn = function(g) {
for (var i=0; i<g.statements.length; i++) {
var st = g.statatements[i];
var vars = {}
if (st.subject instanceof $rdf.Variable) {
vars[st.subject.toNT()] = true;
}
if (st.predicate instanceof $rdf.Variable) {
vars[st.predicate.toNT()] = true;
}
if (st.object instanceof $rdf.Variable) {
vars[st.object.toNT()] = true;
}
}
return vars;
};
// Heavy comparison is for repeatable canonical ordering
$rdf.Util.heavyCompare = function(x, y, g) {
var nonBlank = function(x) {
return (x.termType === 'bnode') ? null : x;
}
var signature = function(b) {
var lis = g.statementsMatching(x).map(function(st){
return ('' + nonBlank(st.subject) + ' ' + nonBlank(st.predicate)
+ ' ' + nonBlank(st.object));
}).concat(g.statementsMatching(undefined, undefined, x).map(function(st){
return ('' + nonBlank(st.subject) + ' ' + nonBlank(st.predicate)
+ ' ' + nonBlank(st.object));
}))
lis.sort();
return lis.join('\n');
}
if ((x.termType === 'bnode') || (y.termType === 'bnode')) {
if (x.compareTerm(y) === 0) return 0; // Same
if (signature(x) > signature(y)) return +1;
if (signature(x) < signature(y)) return -1;
return x.compareTerm(y); // Too bad -- this order not canonical.
//throw "different bnodes indistinquishable for sorting"
} else {
return x.compareTerm(y);
}
};
$rdf.Util.heavyCompareSPO = function(x, y, g) {
var comp = $rdf.Util.heavyCompare;
var d = comp(x.subject, y.subject, g);
if (d) return d;
d = comp(x.predicate, y.predicate, g);
if (d) return d;
return comp(x.object, y.object, g);
};
///////////////////// Parse XML
//
// Returns: A DOM
//
$rdf.Util.parseXML = function(str) {
var dparser;
if ((typeof tabulator != 'undefined' && tabulator.isExtension)) {
dparser = Components.classes["@mozilla.org/xmlextras/domparser;1"].getService(
Components.interfaces.nsIDOMParser);
} else if (typeof module != 'undefined' && module && module.exports){ // Node.js
//var libxmljs = require('libxmljs'); // Was jsdom before 2012-01 then libxmljs but that nonstandard
//return libxmljs.parseXmlString(str);
var jsdom = require('jsdom');
var dom = jsdom.jsdom(str, undefined, {} );// html, level, options
return dom
} else {
dparser = new DOMParser();
}
return dparser.parseFromString(str, 'application/xml');
};
//////////////////////String Utility
// substitutes given terms for occurrnces of %s
// not well named. Used??? - tim
//
$rdf.Util.string = {
//C++, python style %s -> subs
'template': function(base, subs){
var baseA = base.split("%s");
var result = "";
for (var i=0;i<subs.length;i++){
subs[i] += '';
result += baseA[i] + subs[i];
}
return result + baseA.slice(subs.length).join();
}
};
// from http://dev.jquery.com/browser/trunk/jquery/src/core.js
// Overlap with JQuery -- we try to keep the rdflib.js and jquery libraries separate at the moment.
$rdf.Util.extend = function () {
// copy reference to target object
var target = arguments[0] || {},
i = 1,
length = arguments.length,
deep = false,
options, name, src, copy;
// Handle a deep copy situation
if (typeof target === "boolean") {
deep = target;
target = arguments[1] || {};
// skip the boolean and the target
i = 2;
}
// Handle case when target is a string or something (possible in deep copy)
if (typeof target !== "object" && !jQuery.isFunction(target)) {
target = {};
}
// extend jQuery itself if only one argument is passed
if (length === i) {
target = this;
--i;
}
for (; i < length; i++) {
// Only deal with non-null/undefined values
if ((options = arguments[i]) != null) {
// Extend the base object
for (name in options) {
src = target[name];
copy = options[name];
// Prevent never-ending loop
if (target === copy) {
continue;
}
// Recurse if we're merging object values
if (deep && copy && typeof copy === "object" && !copy.nodeType) {
var clone;
if (src) {
clone = src;
} else if (jQuery.isArray(copy)) {
clone = [];
} else if (jQuery.isObject(copy)) {
clone = {};
} else {
clone = copy;
}
// Never move original objects, clone them
target[name] = jQuery.extend(deep, clone, copy);
// Don't bring in undefined values
} else if (copy !== undefined) {
target[name] = copy;
}
}
}
}
// Return the modified object
return target;
};
/*
* Implements URI-specific functions
*
* See RFC 2386
*
* See also:
* http://www.w3.org/2005/10/ajaw/uri.js
* http://www.w3.org/2000/10/swap/uripath.py
*
*/
var $rdf, k, v, _base, _ref,
__hasProp = {}.hasOwnProperty;
if (typeof $rdf === "undefined" || $rdf === null) {
$rdf = {};
}
if ($rdf.Util == null) {
$rdf.Util = {};
}
$rdf.uri = (function() {
function uri() {}
uri.join = function(given, base) {
var baseColon, baseHash, baseScheme, baseSingle, colon, lastSlash, path;
baseHash = base.indexOf('#');
if (baseHash > 0) {
base = base.slice(0, baseHash);
}
if (given.length === 0) {
return base;
}
if (given.indexOf('#') === 0) {
return base + given;
}
colon = given.indexOf(':');
if (colon >= 0) {
return given;
}
baseColon = base.indexOf(':');
if (base.length === 0) {
return given;
}
if (baseColon < 0) {
alert("Invalid base: " + base + " in join with given: " + given);
return given;
}
baseScheme = base.slice(0, +baseColon + 1 || 9e9);
if (given.indexOf('//') === 0) {
return baseScheme + given;
}
if (base.indexOf('//', baseColon) === baseColon + 1) {
baseSingle = base.indexOf('/', baseColon + 3);
if (baseSingle < 0) {
if (base.length - baseColon - 3 > 0) {
return base + '/' + given;
} else {
return baseScheme + given;
}
}
} else {
baseSingle = base.indexOf('/', baseColon + 1);
if (baseSingle < 0) {
if (base.length - baseColon - 1 > 0) {
return base + '/' + given;
} else {
return baseScheme + given;
}
}
}
if (given.indexOf('/') === 0) {
return base.slice(0, baseSingle) + given;
}
path = base.slice(baseSingle);
lastSlash = path.lastIndexOf('/');
if (lastSlash < 0) {
return baseScheme + given;
}
if (lastSlash >= 0 && lastSlash < path.length - 1) {
path = path.slice(0, +lastSlash + 1 || 9e9);
}
path += given;
while (path.match(/[^\/]*\/\.\.\//)) {
path = path.replace(/[^\/]*\/\.\.\//, '');
}
path = path.replace(/\.\//g, '');
path = path.replace(/\/\.$/, '/');
return base.slice(0, baseSingle) + path;
};
uri.commonHost = new RegExp('^[-_a-zA-Z0-9.]+:(//[^/]*)?/[^/]*$');
uri.hostpart = function(u) {
var m;
m = /[^\/]*\/\/([^\/]*)\//.exec(u);
if (m) {
return m[1];
} else {
return '';
}
};
uri.refTo = function(base, uri) {
var c, i, j, k, l, n, s, _i, _j, _k, _len, _len1, _ref;
if (!base) {
return uri;
}
if (base === uri) {
return '';
}
for (i = _i = 0, _len = uri.length; _i < _len; i = ++_i) {
c = uri[i];
if (c !== base[i]) {
break;
}
}
if (base.slice(0, i).match($rdf.Util.uri.commonHost)) {
k = uri.indexOf('//');
if (k < 0) {
k = -2;
}
l = uri.indexOf('/', k + 2);
if (uri[l + 1] !== '/' && base[l + 1] !== '/' && uri.slice(0, l) === base.slice(0, l)) {
return uri.slice(l);
}
}
if (uri[i] === '#' && base.length === i) {
return uri.slice(i);
}
while (i > 0 && uri[i - 1] !== '/') {
i--;
}
if (i < 3) {
return uri;
}
if (base.indexOf('//', i - 2) > 0 || uri.indexOf('//', i - 2) > 0) {
return uri;
}
if (base.indexOf(':', i) > 0) {
return uri;
}
n = 0;
_ref = base.slice(i);
for (_j = 0, _len1 = _ref.length; _j < _len1; _j++) {
c = _ref[_j];
if (c === '/') {
n++;
}
}
if (n === 0 && i < uri.length && uri[i] === '#') {
return './' + uri.slice(i);
}
if (n === 0 && i === uri.length) {
return './';
}
s = '';
if (n > 0) {
for (j = _k = 1; 1 <= n ? _k <= n : _k >= n; j = 1 <= n ? ++_k : --_k) {
s += '../';
}
}
return s + uri.slice(i);
};
uri.docpart = function(uri) {
var i;
i = uri.indexOf('#');
if (i < 0) {
return uri;
} else {
return uri.slice(0, i);
}
};
uri.document = function(x) {
return $rdf.sym(uri.docpart(x.uri));
};
uri.protocol = function(uri) {
var i;
i = uri.indexOf(':');
if (i < 0) {
return null;
} else {
return uri.slice(0, i);
}
};
return uri;
})();
$rdf.Util.uri = $rdf.uri;
if ((typeof module !== "undefined" && module !== null ? module.exports : void 0) != null) {
if ((_base = module.exports).Util == null) {
_base.Util = {};
}
_ref = $rdf.Util;
for (k in _ref) {
if (!__hasProp.call(_ref, k)) continue;
v = _ref[k];
module.exports.Util[k] = v;
}
module.exports.uri = $rdf.uri;
}
/*
* These are the classes corresponding to the RDF and N3 data models
*
* Designed to look like rdflib and cwm
*
* This is coffee see http://coffeescript.org
*/
var $rdf, k, v,
__hasProp = {}.hasOwnProperty,
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
__indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };
if (typeof $rdf === "undefined" || $rdf === null) {
$rdf = {};
}
/*
the superclass of all RDF Statement objects, that is
$rdf.Symbol, $rdf.Literal, $rdf.BlankNode
No class extends this yet, but it could be a place to put common behavior.
*/
$rdf.Node = (function() {
function Node() {}
Node.prototype.substitute = function(bindings) {
return this;
};
return Node;
})();
$rdf.Empty = (function(_super) {
__extends(Empty, _super);
function Empty() {
return Empty.__super__.constructor.apply(this, arguments);
}
Empty.prototype.termType = 'empty';
Empty.prototype.toString = function() {
return '()';
};
Empty.prototype.toNT = Empty.prototype.toString;
return Empty;
})($rdf.Node);
/*
A named node in an RDF graph
todo: badly named.
No, formally a URI is a string, this is a node whose name is a URI.
Connolly pointed out it isa symbol on the language.
@param uri the uri as string
*/
$rdf.Symbol = (function(_super) {
__extends(Symbol, _super);
function Symbol(uri) {
this.uri = uri;
this.value = this.uri;
}
Symbol.prototype.termType = 'symbol';
Symbol.prototype.toString = function() {
return "<" + this.uri + ">";
};
Symbol.prototype.toNT = Symbol.prototype.toString;
Symbol.prototype.sameTerm = function(other) {
if (!other) {
return false;
}
return (this.termType === other.termType) && (this.uri === other.uri);
};
Symbol.prototype.compareTerm = function(other) {
if (this.classOrder < other.classOrder) {
return -1;
}
if (this.classOrder > other.classOrder) {
return +1;
}
if (this.uri < other.uri) {
return -1;
}
if (this.uri > other.uri) {
return +1;
}
return 0;
};
Symbol.prototype.XSDboolean = new Symbol('http://www.w3.org/2001/XMLSchema#boolean');
Symbol.prototype.XSDdecimal = new Symbol('http://www.w3.org/2001/XMLSchema#decimal');
Symbol.prototype.XSDfloat = new Symbol('http://www.w3.org/2001/XMLSchema#float');
Symbol.prototype.XSDinteger = new Symbol('http://www.w3.org/2001/XMLSchema#integer');
Symbol.prototype.XSDdateTime = new Symbol('http://www.w3.org/2001/XMLSchema#dateTime');
Symbol.prototype.integer = new Symbol('http://www.w3.org/2001/XMLSchema#integer');
return Symbol;
})($rdf.Node);
if ($rdf.NextId != null) {
$rdf.log.error("Attempt to re-zero existing blank node id counter at " + $rdf.NextId);
} else {
$rdf.NextId = 0;
}
$rdf.NTAnonymousNodePrefix = "_:n";
$rdf.BlankNode = (function(_super) {
__extends(BlankNode, _super);
function BlankNode(id) {
this.id = $rdf.NextId++;
this.value = id ? id : this.id.toString();
}
BlankNode.prototype.termType = 'bnode';
BlankNode.prototype.toNT = function() {
return $rdf.NTAnonymousNodePrefix + this.id;
};
BlankNode.prototype.toString = BlankNode.prototype.toNT;
BlankNode.prototype.sameTerm = function(other) {
if (!other) {
return false;
}
return (this.termType === other.termType) && (this.id === other.id);
};
BlankNode.prototype.compareTerm = function(other) {
if (this.classOrder < other.classOrder) {
return -1;
}
if (this.classOrder > other.classOrder) {
return +1;
}
if (this.id < other.id) {
return -1;
}
if (this.id > other.id) {
return +1;
}
return 0;
};
return BlankNode;
})($rdf.Node);
$rdf.Literal = (function(_super) {
__extends(Literal, _super);
function Literal(value, lang, datatype) {
this.value = value;
this.lang = lang;
this.datatype = datatype;
if (this.lang == null) {
this.lang = void 0;
}
if (this.datatype == null) {
this.datatype = void 0;
}
}
Literal.prototype.termType = 'literal';
Literal.prototype.toString = function() {
return "" + this.value;
};
Literal.prototype.toNT = function() {
var str;
str = this.value;
if (typeof str === !'string') {
if (typeof str === 'number') {
return '' + str;
}
throw Error("Value of RDF literal is not string: " + str);
}
str = str.replace(/\\/g, '\\\\');
str = str.replace(/\"/g, '\\"');
str = str.replace(/\n/g, '\\n');
str = "\"" + str + "\"";
if (this.datatype) {
str += '^^' + this.datatype.toNT();
}
if (this.lang) {
str += '@' + this.lang;
}
return str;
};
Literal.prototype.sameTerm = function(other) {
if (!other) {
return false;
}
return (this.termType === other.termType) && (this.value === other.value) && (this.lang === other.lang) && ((!this.datatype && !other.datatype) || (this.datatype && this.datatype.sameTerm(other.datatype)));
};
Literal.prototype.compareTerm = function(other) {
if (this.classOrder < other.classOrder) {
return -1;
}
if (this.classOrder > other.classOrder) {
return +1;
}
if (this.value < other.value) {
return -1;
}
if (this.value > other.value) {
return +1;
}
return 0;
};
return Literal;
})($rdf.Node);
$rdf.Collection = (function(_super) {
__extends(Collection, _super);
function Collection(initial) {
var s, _i, _len;
this.id = $rdf.NextId++;
this.elements = [];
this.closed = false;
if (typeof initial !== 'undefined') {
for (_i = 0, _len = initial.length; _i < _len; _i++) {
s = initial[_i];
this.elements.push($rdf.term(s));
}
}
}
Collection.prototype.termType = 'collection';
Collection.prototype.toNT = function() {
return $rdf.NTAnonymousNodePrefix + this.id;
};
Collection.prototype.toString = function() {
return '(' + this.elements.join(' ') + ')';
};
Collection.prototype.substitute = function(bindings) {
var s;
return new $rdf.Collection((function() {
var _i, _len, _ref, _results;
_ref = this.elements;
_results = [];
for (_i = 0, _len = _ref.length; _i < _len; _i++) {
s = _ref[_i];
_results.push(s.substitute(bindings));
}
return _results;
}).call(this));
};
Collection.prototype.append = function(el) {
return this.elements.push(el);
};
Collection.prototype.unshift = function(el) {
return this.elements.unshift(el);
};
Collection.prototype.shift = function() {
return this.elements.shift();
};
Collection.prototype.close = function() {
return this.closed = true;
};
return Collection;
})($rdf.Node);
$rdf.Collection.prototype.sameTerm = $rdf.BlankNode.prototype.sameTerm;
$rdf.Collection.prototype.compareTerm = $rdf.BlankNode.prototype.compareTerm;
/*
function to transform a value into an $rdf.Node
@param val can be an rdf.Node, a date, string, number, boolean, or undefined. RDF Nodes are returned as is,
undefined as undefined
*/
$rdf.term = function(val) {
var d2, dt, elt, value, x, _i, _len;
switch (typeof val) {
case 'object':
if (val instanceof Date) {
d2 = function(x) {
return ('' + (100 + x)).slice(1, 3);
};
value = '' + val.getUTCFullYear() + '-' + d2(val.getUTCMonth() + 1) + '-' + d2(val.getUTCDate()) + 'T' + d2(val.getUTCHours()) + ':' + d2(val.getUTCMinutes()) + ':' + d2(val.getUTCSeconds()) + 'Z';
return new $rdf.Literal(value, void 0, $rdf.Symbol.prototype.XSDdateTime);
} else if (val instanceof Array) {
x = new $rdf.Collection;
for (_i = 0, _len = val.length; _i < _len; _i++) {
elt = val[_i];
x.append($rdf.term(elt));
}
return x;
}
return val;
case 'string':
return new $rdf.Literal(val);
case 'number':
if (('' + val).indexOf('e') >= 0) {
dt = $rdf.Symbol.prototype.XSDfloat;
} else if (('' + val).indexOf('.') >= 0) {
dt = $rdf.Symbol.prototype.XSDdecimal;
} else {
dt = $rdf.Symbol.prototype.XSDinteger;
}
return new $rdf.Literal('' + val, void 0, dt);
case 'boolean':
return new $rdf.Literal((val ? '1' : '0'), void 0, $rdf.Symbol.prototype.XSDboolean);