[Bigdata-developers] BigdataSailRepository Service not available

[Joakim S. <joa...@bl...>]

Hi,
I am running a Sparql query using the sample code;

	DataManager dm = DataManager.getInstance();
	Repository repo = dm.getRepository();
	try {
						 
		if( repo.isInitialized()) LOG.info("Repo is initialized!");
		else {
			repo.initialize();
			LOG.info("Initialized repo");
		}						
		TupleQueryResult result = BlazegraphUtils.executeSelectQuery(repo, query, QueryLanguage.SPARQL, false);

-----

	public static TupleQueryResult executeSelectQuery(Repository repo, String query, QueryLanguage ql, boolean IncludeInferred) throws Exception {
    
        RepositoryConnection cxn;
        TupleQueryResult result = null;
        if (repo instanceof BigdataSailRepository) { 
            cxn = ((BigdataSailRepository) repo).getReadOnlyConnection();
        } else {
            cxn = repo.getConnection();
        }
        
        try {

            final TupleQuery tupleQuery = cxn.prepareTupleQuery(ql, query);
            if(IncludeInferred) tupleQuery.setIncludeInferred(IncludeInferred /* includeInferred */);
            result =  tupleQuery.evaluate();
            
        } finally {
            // close the repository connection        	
            cxn.close();
	   log.info("closed connection");
        }
        return result;
    }
						
 and the second time it’s executed I get this error message. For some reason the second time 

	cxn = ((BigdataSailRepository) repo).getReadOnlyConnection();

is called, it triggers the problem. 

java.lang.IllegalStateException: Service not available
2015-07-24 11:47:27,679 INFO  [QueryAction.java:90] : Shut down repo
DataService is done!
	at com.bigdata.service.AbstractTransactionService.newTx(AbstractTransactionService.java:733)
	at com.bigdata.journal.Journal$InnerJournalTransactionService._newTx(Journal.java:2315)
	at com.bigdata.journal.Journal$InnerJournalTransactionService.newTx(Journal.java:2158)
	at com.bigdata.rdf.sail.BigdataSail$BigdataSailReadOnlyConnection.newTx(BigdataSail.java:4697)
	at com.bigdata.rdf.sail.BigdataSail$BigdataSailReadOnlyConnection.<init>(BigdataSail.java:4636)
	at com.bigdata.rdf.sail.BigdataSail._getReadOnlyConnection(BigdataSail.java:1597)
	at com.bigdata.rdf.sail.BigdataSail.getReadOnlyConnection(BigdataSail.java:1571)
	at com.bigdata.rdf.sail.BigdataSail.getReadOnlyConnection(BigdataSail.java:1553)
	at com.bigdata.rdf.sail.BigdataSailRepository.getReadOnlyConnection(BigdataSailRepository.java:123)
	at com.blippar.blazegraph.BlazegraphUtils.executeSelectQuery(BlazegraphUtils.java:62)
	at com.blippar.action.QueryAction.execute(QueryAction.java:60)
	at com.blippar.servlet.MinervaServlet.doPost(MinervaServlet.java:87)
	at com.blippar.servlet.MinervaServlet.doGet(MinervaServlet.java:54)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1527)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1484)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)