B:\Dropbox\workspace\webid\lib\node-rdflib.js:2544
$rdf.Literal.prototype.hashString = $rdf.Literal.prototype.toNT;
            ^
TypeError: Cannot read property 'prototype' of undefined
    at B:\Dropbox\workspace\webid\lib\node-rdflib.js:2544:13
    at B:\Dropbox\workspace\webid\lib\node-rdflib.js:3012:2
    at Object.<anonymous> (B:\Dropbox\workspace\webid\lib\node-rdflib.js:7072:14

 thisURI: 'http://dig.csail.mit.edu/2005/ajar/ajaw/rdf/sources.js#SourceFetcher',

/Users/mozilla/Proj/gits/node-webid/node_modules/rdflib/dist/rdflib.js:21085
module.exports = jsonldjs;
                 ^
ReferenceError: jsonldjs is not defined
    at Object.<anonymous> (/Users/mozilla/Proj/gits/node-webid/node_modules/rdflib/dist/rdflib.js:21085:18)
    at Object../request (/Users/mozilla/Proj/gits/node-webid/node_modules/rdflib/dist/rdflib.js:21086:4)
    at s (/Users/mozilla/Proj/gits/node-webid/node_modules/rdflib/dist/rdflib.js:7488:254)
    at /Users/mozilla/Proj/gits/node-webid/node_modules/rdflib/dist/rdflib.js:7488:305
    at Object.async (/Users/mozilla/Proj/gits/node-webid/node_modules/rdflib/dist/rdflib.js:24032:14)
    at s (/Users/mozilla/Proj/gits/node-webid/node_modules/rdflib/dist/rdflib.js:7488:254)
    at e (/Users/mozilla/Proj/gits/node-webid/node_modules/rdflib/dist/rdflib.js:7488:425)
    at /Users/mozilla/Proj/gits/node-webid/node_modules/rdflib/dist/rdflib.js:7488:443
    at Object.<anonymous> (/Users/mozilla/Proj/gits/node-webid/node_modules/rdflib/dist/rdflib.js:25646:3)
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at Object.<anonymous> (/Users/mozilla/Proj/gits/node-webid/test/webid.js:1:76)
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at /Users/mozilla/Proj/gits/node-webid/node_modules/mocha/lib/mocha.js:192:27
    at Array.forEach (native)
    at Mocha.loadFiles (/Users/mozilla/Proj/gits/node-webid/node_modules/mocha/lib/mocha.js:189:14)
    at Mocha.run (/Users/mozilla/Proj/gits/node-webid/node_modules/mocha/lib/mocha.js:422:31)
    at Object.<anonymous> (/Users/mozilla/Proj/gits/node-webid/node_modules/mocha/bin/_mocha:398:16)
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Function.Module.runMain (module.js:501:10)
    at startup (node.js:129:16)
    at node.js:814:3

    this.failFetch = function(xhr, status) {
        console.error("failFetch called with",xhr,status);
        this.addStatus(xhr.req, status)
        kb.add(xhr.uri, ns.link('error'), status)
        this.requested[$rdf.uri.docpart(xhr.uri.uri)] = false
        this.fireCallbacks('fail', [xhr.requestedURI, status])
        xhr.abort()
        return xhr
    }

node_modules/rdflib/dist/rdflib.js:24634
        if ($rdf.Fetcher.crossSiteProxyTemplate && document && document.locati
                                               ^
ReferenceError: document is not defined

$ npm install rdflib
|
> [email protected] postinstall /Users/mozilla/Proj/gits/ldnode/node_modules/rdflib
> make clean all

make: *** No rule to make target `clean'.  Stop.
npm ERR! Darwin 14.3.0
npm ERR! argv "/usr/local/bin/iojs" "/usr/local/bin/npm" "install" "rdflib"
npm ERR! node v2.2.1
npm ERR! npm  v2.11.0
npm ERR! code ELIFECYCLE

npm ERR! [email protected] postinstall: `make clean all`
npm ERR! Exit status 2
npm ERR!
npm ERR! Failed at the [email protected] postinstall script 'make clean all'.
npm ERR! This is most likely a problem with the rdflib package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     make clean all
npm ERR! You can get their info via:
npm ERR!     npm owner ls rdflib
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/mozilla/Proj/gits/ldnode/npm-debug.log

rdflib.parse('<!-- RDF/XML content -->', function(triples) {
    for(var i in triples)
        console.log(triples[i].subject + triples[i].predicate + triples[i].object)
})

    if (typeof module != 'undefined' && module && module.exports) { //Node.js
        var XMLHttpRequest = require("XMLHttpRequest").XMLHttpRequest;
        return new XMLHttpRequest()
    }

Error: Cannot find module 'XMLHttpRequest'

var XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;
var xhr = new XMLHttpRequest();

var FOAF = $rdf.Namespace("http://xmlns.com/foaf/0.1/");
var RDF = $rdf.Namespace("http://www.w3.org/1999/02/22-rdf-syntax-ns#");
var RDFS = $rdf.Namespace("http://www.w3.org/2000/01/rdf-schema#");
var OWL = $rdf.Namespace("http://www.w3.org/2002/07/owl#");
var DC = $rdf.Namespace("http://purl.org/dc/elements/1.1/");
var RSS = $rdf.Namespace("http://purl.org/rss/1.0/");
var XSD = $rdf.Namespace("http://www.w3.org/TR/2004/REC-xmlschema-2-20041028/#dt-");
var CONTACT = $rdf.Namespace("http://www.w3.org/2000/10/swap/pim/contact#");

function wall_loader(uri){
    $rdf.Fetcher.crossSiteProxyTemplate="http://data.fm/proxy?uri={uri}";
    load_foaf_profile(uri);
};

/**
 * This function load the foaf profile of one person
 * @param profiles : Tableau d'amis
 */
function load_foaf_profile(profile_uri){
    var friends = [];
    var store = new $rdf.IndexedFormula();
    var docURI = profile_uri.slice(0, profile_uri.indexOf('#'));
    var person = $rdf.sym(profile_uri);
   var fetch = $rdf.fetcher(store, undefined, true);
   var graph = $rdf.sym($rdf.Fetcher.crossSiteProxy(docURI));

       function serialize_profile_store(document_uri){
           var sz = $rdf.Serializer(store);
           sz.suggestPrefix("foaf","http://xmlns.com/foaf/0.1/");
           var newSts = store.statementsMatching(undefined, undefined, undefined, $rdf.sym(document_uri)).slice();
           return sz.statementsToN3(newSts); // It's empty !
       }

       fetch.nowOrWhenFetched(docURI, undefined, function(){
           alert(store.any(person, FOAF('name')));
         alert(serialize_profile_store(docURI)); // This alert does not work.
       });

}

    __Serializer.prototype.termToN3 = function termToN3(expr, stats) {
        switch (expr.termType) {
        case 'formula':
            var res = [ '{' ];
            res = res.concat(statementListToTree(expr.statements));
            return res.concat([ '}' ]);

        case 'collection':
            var res = [ '(' ];
            for ( var i = 0; i < expr.elements.length; i++) {
                res.push([ objectTree(expr.elements[i], stats) ]);
            }
            res.push(')');
            return res;

        default:
            return this.atomicTermToN3(expr);
        }
    };

g = $rdf.graph()
$rdf.parse("_:x1 <http://example1> <http://example2> <http://graph> .\n"+
           "_:x1 <http://example3> <http://example4> <http://graph> .\n", 
           g, null, 'application/nquads', function() {})
g.statements[0].subject.sameTerm(g.statements[1].subject)
false

<rdf:RDF
 xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
 xmlns:z="http://www.zotero.org/namespaces/export#"
 xmlns:dc="http://purl.org/dc/elements/1.1/"
 xmlns:foaf="http://xmlns.com/foaf/0.1/"
 xmlns:bib="http://purl.org/net/biblio#"
 xmlns:dcterms="http://purl.org/dc/terms/"
 xmlns:link="http://purl.org/rss/1.0/modules/link/">
    <bib:Book rdf:about="urn:isbn:0201634465">
        <z:itemType>book</z:itemType>
        <dcterms:isReferencedBy rdf:resource="#item_1282"/>
        <dc:title>Essential Com: The Component Object Model</dc:title>
    </bib:Book>
    <bib:Memo rdf:about="#item_1282">
        <rdf:value>&lt;p>2013-03-02 (HS) Chapter 1 &quot;COM as a Better C++&quot;&lt;/p>
&lt;ul>
&lt;li>C-style structs can be held invariant across compilers&lt;/li>
&lt;li>all compilers can be coerced to pass function parameters in the same order, e.g. using Win32 API compiler directives: WINBASEAPI void WINAPI Sleep(DWORD dwMsecs);&lt;/li>
&lt;li>all C++ compilers on a given platform implement the virtual function call mechanism equivalently (for classes that have no data members and at most one base class). Two basic techniques: CFRONT technique / adjustor thunk technique (Win32). But on any given platform, one technique dominates.&lt;/li>
&lt;/ul>
&lt;p>Example:&lt;/p>
&lt;pre>// ifaststring.h&lt;br />class IFastString {&lt;br />public:&lt;br />  virtual int Length(void) const = 0;&lt;br />  virtual int Find(const cha * psz) const = 0;&lt;br />};&lt;br />extern &quot;C&quot;&lt;br />IFastString *CreateFastString(const char *psz);&lt;br />&lt;br />// faststring.cpp (part of DLL)&lt;br />IFastString *CreateFastString(const char *psz) {&lt;br />  return new FastString(psz);&lt;br />}&lt;br />&lt;/pre>
&lt;p>Remaining problem: object destruction.&lt;/p>
&lt;ul>
&lt;li>not having virtual destructor results in memory leaks&lt;/li>
&lt;li>provide virtual destructor and let client delete object - not compiler independent (position of virtual destructor in vtable varies)&lt;/li>
&lt;/ul>
&lt;p>Solution:&lt;/p>
&lt;ul>
&lt;li>provide separate Delete() method&lt;/li>
&lt;/ul>
&lt;p>Advantages:&lt;/p>
&lt;ul>
&lt;li>DLL binary compatible across compilers&lt;/li>
&lt;li>different DLLs that implement the interface can be loaded dynamically&lt;/li>
&lt;/ul>
&lt;p>Remaining problem:&lt;/p>
&lt;ul>
&lt;li>interface signature and semantics must never change (otherwise clients using different DLL versions would break)&lt;/li>
&lt;li>how to provide additional functionality over time?&lt;/li>
&lt;/ul>
&lt;p>Solution 1:&lt;/p>
&lt;ul>
&lt;li>add new methods at the end&lt;/li>
&lt;/ul>
&lt;p>Drawback:&lt;/p>
&lt;ul>
&lt;li>not completely compatible: new client will not work with older DLL that provides fewer methods than newer client expects&lt;/li>
&lt;/ul>
&lt;h2>Multiple abstract interfaces&lt;/h2>
&lt;p>Description:&lt;/p>
&lt;ul>
&lt;li>add new methods in a new interface that extends the existing one; e.g. FindN() in addition to Find()&lt;/li>
&lt;li>let the client use e.g. dynamic_cast to get access to the new interface&lt;/li>
&lt;li>add new orthogonal functionality (e.g. persistence) in a separate interface, let the implementation class implement multiple interfaces&lt;/li>
&lt;/ul>
&lt;p>Drawback:&lt;/p>
&lt;ul>
&lt;li>dynamic cast is compiler dependent&lt;/li>
&lt;/ul>
&lt;h2>Method for dynamic cast&lt;/h2>
&lt;ul>
&lt;li>provide special method for dynamic cast in the DLL&lt;/li>
&lt;/ul>
&lt;p>Example:&lt;/p>
&lt;pre>class IPersistentObject {&lt;br />public:&lt;br />  virtual void *Dynamic_Cast(const char *pszType) = 0;&lt;br />  virtual void Delete(void) = 0;&lt;br />   ...&lt;br />};&lt;br />class IFastString {&lt;br />public:&lt;br />  virtual void *&lt;strong>Dynamic_Cast&lt;/strong>(const char *pszType) = 0;&lt;br />  virtual void Delete(void) = 0;&lt;br />  ...&lt;br />};&lt;br />&lt;br />// faststring&lt;br />class FastString : public IFastString, public IPersistentObject { ... }&lt;br />&lt;br />void *FastString::Dynamic_Cast(const char *pszType) {&lt;br />  if (strcmp(pszType, &quot;IFastString&quot;) == 0)&lt;br />    return static_cast&amp;lt;IFastString*&amp;gt;(this);&lt;br />...&lt;br />}&lt;br />&lt;br />// client&lt;br />bool SaveString(IFastString *pfs, const char *pszFN) {&lt;br />  bool bResult = false;&lt;br />  IPersistentObject *ppo = (IPersistentObject*) pfs-&amp;gt;Dynamic_Cast(&quot;IPersistentObject&quot;);&lt;br />  if (ppo) bResult = ppo-&amp;gt;Save(pszFN);&lt;br />  return bResult;&lt;br />}&lt;br />&lt;/pre>
&lt;p>Drawback:&lt;/p>
&lt;ul>
&lt;li>client may delete the same object once for each interface =&amp;gt; disaster&lt;/li>
&lt;/ul>
&lt;h2>Methods for resource management (reference counting)&lt;/h2>
&lt;p>Example:&lt;/p>
&lt;pre>class IExtensibleObject {&lt;br />public:&lt;br />  virtual void *Dynamic_Cast(const char *pszType) = 0;&lt;br />  virtual void DuplicatePointer(void) = 0;&lt;br />  virtual void DestroyPointer(void) = 0;&lt;br />};&lt;br />&lt;/pre>
&lt;p>Rules:&lt;/p>
&lt;ul>
&lt;li>when an interface pointer is duplicated, a call to DuplicatePointer is required&lt;/li>
&lt;li>when an interface pointer is no longer in use, a call to DestroyPointer is required&lt;/li>
&lt;/ul>
&lt;h2>Where Are We?&lt;/h2>
&lt;p>&quot;... In short, we have just engineered the Component Object Model.&quot;&lt;/p></rdf:value>
    </bib:Memo>
</rdf:RDF>

Error trying to parse <http://schema.rdfs.org/all.rdf> as application/rdf+xml:
Error: RDF/XML syntax error: No namespace for rdf:about in http://schema.rdfs.org/all.rdf:
Error: RDF/XML syntax error: No namespace for rdf:about in http://schema.rdfs.org/all.rdf
    at null.<anonymous> (/Users/mozilla/Proj/schemas/node_modules/rdflib/dist/rdflib.js:1698:23)
    at parseDOM (/Users/mozilla/Proj/schemas/node_modules/rdflib/dist/rdflib.js:1828:38)
    at parse (/Users/mozilla/Proj/schemas/node_modules/rdflib/dist/rdflib.js:1688:14)
    at Object.parse (/Users/mozilla/Proj/schemas/node_modules/rdflib/dist/rdflib.js:8221:20)
    at Request._callback (/Users/mozilla/Proj/schemas/index.js:16:10)
    at Request.self.callback (/Users/mozilla/Proj/schemas/node_modules/request/request.js:372:22)
    at Request.emit (events.js:98:17)
    at Request.<anonymous> (/Users/mozilla/Proj/schemas/node_modules/request/request.js:1317:14)
    at Request.emit (events.js:117:20)
    at IncomingMessage.<anonymous> (/Users/mozilla/Proj/schemas/node_modules/request/request.js:1265:12)

var FOAF = $rdf.Namespace("http://xmlns.com/foaf/0.1/");
var RDF = $rdf.Namespace("http://www.w3.org/1999/02/22-rdf-syntax-ns#");
var RDFS = $rdf.Namespace("http://www.w3.org/2000/01/rdf-schema#");
var OWL = $rdf.Namespace("http://www.w3.org/2002/07/owl#");
var DC = $rdf.Namespace("http://purl.org/dc/elements/1.1/");
var RSS = $rdf.Namespace("http://purl.org/rss/1.0/");
var XSD = $rdf.Namespace("http://www.w3.org/TR/2004/REC-xmlschema-2-20041028/#dt-");
var CONTACT = $rdf.Namespace("http://www.w3.org/2000/10/swap/pim/contact#");

graphs = {};

var foaf_profiles = ["http://b4mad.net/FOAF/goern.rdf#goern","http://bigasterisk.com/foaf.rdf#drewp","http://crschmidt.net/foaf.rdf#crschmidt"];

function initialize() {
    $rdf.Fetcher.crossSiteProxyTemplate="http://data.fm/proxy?uri={uri}";
    for(var i=0 ; i < foaf_profiles.length ; i++){
        load_foaf_profile(foaf_profiles[i])
    }
}

/**
 * This function load all foaf profile and put her in the HTML5 DOM
 * @param profile_uri
 */
function load_foaf_profile(profile_uri){
    var profile = $rdf.sym(profile_uri);
    var docURI = profile_uri.slice(0, profile_uri.indexOf('#'));
    var kb = graphs[docURI];
    if (!kb) {
        kb = graphs[docURI] = new $rdf.IndexedFormula();
    }
    var fetch = $rdf.fetcher(kb, undefined, true);
    fetch.nowOrWhenFetched($rdf.Fetcher.crossSiteProxy(docURI), undefined, function(){ 
         // <---- here is the issue this function is not excuted with the 2 first URI.

        var profile_picture = kb.any(profile, FOAF('img'));
        if(profile_picture == undefined){
            profile_picture = kb.any(profile, FOAF('depiction'));
        }

        if(profile_picture != undefined){
            // Export data in dom.
            $('#list').append('<p><img src="' + profile_picture.uri + '" alt="img" />' + kb.any(profile, FOAF('name')) +' </p>');
        }
    });
}

// - load remote RDF document
var fetch = $rdf.fetcher(kb, 1000);
fetch.nowOrWhenFetched('http://dig.csail.mit.edu/2008/webdav/timbl/foaf.rdf', undefined, function(ok) {
    var sparqlQuery = 'PREFIX foaf: <http://xmlns.com/foaf/0.1/> \
                       SELECT ?person ?name \
                       WHERE { \
                         <http://www.w3.org/People/Berners-Lee/card#i> foaf:knows ?person . \
                         OPTIONAL { ?person foaf:name ?name } \
                       }';
    var query = $rdf.SPARQLToQuery(sparqlQuery, true, kb);

    console.log($rdf.queryToSPARQL(query)); // prints an empty OPTIONAL clause

    kb.query(query, function(result) {
        // doesn't delivery any result
    }, fetch);
});

`jsdom 4.x onward only works on io.js, not Node.js™: https://github.com/tmpvar

/opt/local/bin/node sparql_example.js
/home/ckristo/examples/rdflib.js/node_modules/rdflib/dist/rdflib.js:5578
        if($rdf.fetcher) $rdf.fetcher.lookUpThing(st.subject,"sparql:"+st.subj
                                      ^
TypeError: undefined is not a function
    at Object.$rdf.SPARQLToQuery (/home/ckristo/examples/rdflib.js/node_modules/rdflib/dist/rdflib.js:5578:39)
    at null.userCallback (/home/ckristo/examples/rdflib.js/sparql_example.js:20:22)
    at doneFetch (/home/ckristo/examples/rdflib.js/node_modules/rdflib/dist/rdflib.js:24606:17)

/mypath/rdflib.js/dist/rdflib.js:6999
                if (root.nodeName == 'parsererror') { //@@ Mozilla only See is
                        ^
TypeError: Cannot read property 'nodeName' of null
    at xhr.handle (/mypath/rdflib.js/dist/rdflib.js:6999:25)
    at null.onreadystatechange (/mypath/rdflib.js/dist/rdflib.js:7851:25)
    at dispatchEvent (/mypath/rdflib.js/node_modules/XMLHttpRequest/lib/XMLHttpRequest.js:570:25)
    at setState (/mypath/rdflib.js/node_modules/XMLHttpRequest/lib/XMLHttpRequest.js:589:14)
    at IncomingMessage.<anonymous> (/mypath/rdflib.js/node_modules/XMLHttpRequest/lib/XMLHttpRequest.js:427:13)
    at IncomingMessage.EventEmitter.emit (events.js:117:20)
    at _stream_readable.js:920:16
    at process._tickCallback (node.js:415:13)

Asynch fetch fail: Error trying to parse <http://bblfish.net/people/henry/card> as Notation3:
Line 1 of <http://bblfish.net/people/henry/card>: Bad syntax: ']' expected
at: "cert:modulus"B9234D5F150539282":
undefined for http://bblfish.net/people/henry/card

// - load RDF file
var fetch = $rdf.fetcher(kb, 5000);
fetch.nowOrWhenFetched('file:foaf.rdf', undefined, function(ok) { /* ... */ });

var fs = require('fs');
// - read RDF file
fs.readFile('foaf.rdf', function (err, data) {
    if (err) { /* error handling */ }
    // - parse RDF file
    $rdf.parse(data.toString(), kb, 'foaf.rdf', 'application/rdf+xml', function(err, kb) { /* ... */ });
});

predicateIndex: 
   [ '<http://www.w3.org/2000/01/rdf-schema#label>': [ [Object], [Object] ],
     '<http://www.w3.org/2007/ont/link#protocol>': [ [Object], [Object], [Object], [Object] ],
     '<http://www.w3.org/2007/ont/link#requestedURI>': [ [Object] ],
     '<http://www.w3.org/2007/ont/link#status>': [ [Object] ],
     '<http://www.w3.org/2007/ont/link#response>': [ [Object] ],
     '<http://www.w3.org/2007/ont/http#status>': [ [Object] ],
     '<http://www.w3.org/2007/ont/http#statusText>': [ [Object] ],
     '<http://www.w3.org/2007/ont/httph#date>': [ [Object] ],
     '<http://www.w3.org/2007/ont/httph#server>': [ [Object] ],
     '<http://www.w3.org/2007/ont/httph#last-modified>': [ [Object] ],
     '<http://www.w3.org/2007/ont/httph#etag>': [ [Object] ],
     '<http://www.w3.org/2007/ont/httph#accept-ranges>': [ [Object] ],
     '<http://www.w3.org/2007/ont/httph#content-length>': [ [Object] ],
     '<http://www.w3.org/2007/ont/httph#access-control-allow-origin>': [ [Object] ],
     '<http://www.w3.org/2007/ont/httph#connection>': [ [Object] ],
     '<http://www.w3.org/2007/ont/httph#content-type>': [ [Object] ],
     '<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>': [ [Object] ] ],

var $rdf = require('rdflib');
var SCHEMA = $rdf.Namespace('http://www.w3.org/2000/01/rdf-schema#');
var g = $rdf.graph();
request('http://schema.rdfs.org/all.nt', function(err, response, body) {
    var kb = new $rdf.IndexedFormula();
    $rdf.parse(body, kb, 'http://schema.rdfs.org/all.nt', 'text/n3');
    console.log(kb.statementsMatching(undefined, undefined, SCHEMA("Class")).length);
  });