Package com.hp.hpl.jena.graph.query

Examples of com.hp.hpl.jena.graph.query.QueryHandler


    Sink<Pair<Node, Map<Node, Set<Node>>>> sink = new SinkEntityOutput(out, prologue, SyntaxLabels.createNodeToLabel()) ;
    write ( sink, graph ) ;
  }

  private static void write (Sink<Pair<Node, Map<Node, Set<Node>>>> sink, Graph graph) {
    QueryHandler queryHandler = graph.queryHandler() ;
    ExtendedIterator<Node> subjects = queryHandler.subjectsFor(Node.ANY, Node.ANY) ;
    try {
      Map<Node, Set<Node>> predicates = new HashMap<Node, Set<Node>>() ;
      while ( subjects.hasNext() ) {
        Node subject = subjects.next() ;
        ExtendedIterator<Triple> triples = graph.find(subject, Node.ANY, Node.ANY) ;
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                            ExecutionContext qCxt)
        {
            super(qCxt) ;
            this.binding = binding ;
           
            QueryHandler qh = qCxt.getActiveGraph().queryHandler() ;
            com.hp.hpl.jena.graph.query.Query graphQuery = new com.hp.hpl.jena.graph.query.Query() ;
           
            //System.out.println("StageBasePattern: "+pattern) ;
           
            Set<Var> vars = new HashSet<Var>() ;
            compilePattern(graphQuery, pattern.getList(), binding, vars) ;
            projectionVars = projectionVars(vars) ;
            // **** No constraints done here currently
            //QueryEngineUtils.compileConstraints(graphQuery, constraints) ;
           
            // Start our next iterator.
            BindingQueryPlan plan = qh.prepareBindings(graphQuery, projectionVars);
            graphIter = plan.executeBindings() ;
            if ( graphIter == null )
                Log.warn(this, "Graph Iterator is null") ;
        }
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    Sink<Pair<Node, Map<Node, Set<Node>>>> sink = new SinkEntityOutput(out, prologue, SyntaxLabels.createNodeToLabel()) ;
    write ( sink, graph ) ;
  }

  private static void write (Sink<Pair<Node, Map<Node, Set<Node>>>> sink, Graph graph) {
    QueryHandler queryHandler = graph.queryHandler() ;
    ExtendedIterator<Node> subjects = queryHandler.subjectsFor(Node.ANY, Node.ANY) ;
    try {
      Map<Node, Set<Node>> predicates = new HashMap<Node, Set<Node>>() ;
      while ( subjects.hasNext() ) {
        Node subject = subjects.next() ;
        ExtendedIterator<Triple> triples = graph.find(subject, Node.ANY, Node.ANY) ;
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