FLEX TBL- Add triples into localgraph

[Andrea Todaro (Euriware)]

 Hi to all,
I would like to add some triple into a localgraph, I wrote the following code:
graph = gf.createLocalGraph();
            changeAddorUpdate = new Change();
            var nodes:Node = gf.createURINode("http://subject");
            var nodep:Node = gf.createURINode("http://predicate");
            var nodeo:Node = gf.createURINode("http://object");
            var triple:TripleMatch = gf.createTripleMatch(nodes,nodep,nodeo);
            changeAddorUpdate.add(triple);

Could u help me to understand what is wrong?
I got this error:
An unexpected error has occured.

If you believe this is due to a bug in TopBraid Composer, then please consider to report the problem to compose...@topquadrant.com and ideally include an export of the Error Log View (Window > Show View > Error Log).

On: 22 mars 2012 18:59:44

Reason:
java.lang.NullPointerException

    at java.util.concurrent.ConcurrentHashMap.get(Unknown Source)

    at org.topbraidlive.server.session.TBLSessionManager.isNewDeath(TBLSessionManager.java:227)

    at org.topbraidlive.server.servlet.AbstractRequestDelegate$1.sendError(AbstractRequestDelegate.java:103)

    at org.topbraidlive.server.servlet.TBEActionErrorHandler.handle(TBEActionErrorHandler.java:45)

    at org.topbraidlive.server.servlet.TBLActionErrorHandler.handleException(TBLActionErrorHandler.java:42)

    at org.topbraidlive.server.servlet.TBLThreadPoolServletDriver.performWork(TBLThreadPoolServletDriver.java:342)

    at org.topbraidlive.server.servlet.TBLThreadPoolServletDriver.doGet(TBLThreadPoolServletDriver.java:178)

    at org.topbraidlive.server.servlet.TBLParentServlet.doStuff(TBLParentServlet.java:389)

    at org.topbraidlive.server.servlet.TBLParentServlet.doXMLMultiRequest(TBLParentServlet.java:159)

    at org.topbraidlive.server.servlet.TBLParentServlet.considerContentType(TBLParentServlet.java:86)

    at org.topbraidlive.server.servlet.TBLParentServlet.doPost(TBLParentServlet.java:365)

    at org.topbraidlive.server.servlet.TBLServlet.doPost(TBLServlet.java:30)

    at org.topbraidlive.server.servlet.TBLServletController.doPost(TBLServletController.java:91)

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)

    at org.topbraid.eclipsex.servlet.TBHttpServlet.service(TBHttpServlet.java:57)

    at org.eclipse.equinox.http.registry.internal.ServletManager$ServletWrapper.service(ServletManager.java:180)

    at org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)

    at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:126)

    at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:60)

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)

    at org.eclipse.equinox.http.jetty.internal.HttpServerManager$InternalHttpServiceServlet.service(HttpServerManager.java:318)

    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)

    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:390)

    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)

    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)

    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)

    at org.mortbay.jetty.Server.handle(Server.java:326)

    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)

    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:939)

    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)

    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)

    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)

    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)

    at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

Thank you for your help in this matter.

Andrea.

[Andrea Todaro (Euriware)]

As back way I created an empty graph in TBC, I retrieve it in Flex code by using the function GraphFactory.singleton().openRemoteGraph(http://emptygraph_url), so now I  have a new graph that is a local cached copy of a graph on the server and I can add my triples.

On Thursday, March 22, 2012 6:14:58 PM UTC+1, Andrea Todaro (Euriware) wrote:

 Hi to all,
I would like to add some triple into a localgraph, I wrote the following code:
graph = gf.createLocalGraph();
            changeAddorUpdate = new Change();
            var nodes:Node = gf.createURINode("http://​subject");
            var nodep:Node = gf.createURINode("http://​predicate");
            var nodeo:Node = gf.createURINode("http://​object");
            var triple:TripleMatch = gf.createTripleMatch(nodes,​nodep,nodeo);
            changeAddorUpdate.add(triple);

Could u help me to understand what is wrong?
I got this error:

An unexpected error has occured.

If you believe this is due to a bug in TopBraid Composer, then please consider to report the problem to composersupport@topquadrant.​com and ideally include an export of the Error Log View (Window > Show View > Error Log).

[Willie Milnor]

Hi Andrea,

From the code that you have shown, I don't see how you could get an error on the server-side (the Java error) as you that code doesn't make a request to the server.  But it sounds like you've changed the code to open a remove graph (http://emptygraph_url).  Could you please send the code snippet now with that change, as well as with the call you make against the server (I assume you are calling Graph.modifyGraph())?

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