Package com.hp.hpl.jena.sparql.engine

Examples of com.hp.hpl.jena.sparql.engine.QueryIterator

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        qIter = new QueryIterDistinct(qIter, execCxt) ;
        return qIter ;
    }

    protected QueryIterator execute(OpReduced opReduced, QueryIterator input) {
        QueryIterator qIter = exec(opReduced.getSubOp(), input) ;
        qIter = new QueryIterReduced(qIter, execCxt) ;
        return qIter ;
    }
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        qIter = new QueryIterReduced(qIter, execCxt) ;
        return qIter ;
    }

    protected QueryIterator execute(OpAssign opAssign, QueryIterator input) {
        QueryIterator qIter = exec(opAssign.getSubOp(), input) ;
        qIter = new QueryIterAssign(qIter, opAssign.getVarExprList(), execCxt, false) ;
        return qIter ;
    }
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    protected QueryIterator execute(OpExtend opExtend, QueryIterator input) {
        // We know (parse time checking) the variable is unused so far in
        // the query so we can use QueryIterAssign knowing that it behaves
        // the same as extend. The boolean should only be a check.
        QueryIterator qIter = exec(opExtend.getSubOp(), input) ;
        qIter = new QueryIterAssign(qIter, opExtend.getVarExprList(), execCxt, true) ;
        return qIter ;
    }
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        {
            if ( ! graphNames.hasNext() )
                return null ;
            Node gn = graphNames.next() ;

            QueryIterator qIter = buildIterator(parentBinding, gn, opGraph, getExecContext()) ;
            if ( qIter == null )
                // Know to be nothing (e.g. graph does not exist).
                return null ;
           
            if ( Var.isVar(opGraph.getNode()) )
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            if ( g == null )
                return null ;
                //throw new ARQInternalErrorException(".containsGraph was true but .getGraph is null") ;
           
            ExecutionContext cxt2 = new ExecutionContext(outerCxt, g) ;
            QueryIterator subInput = QueryIterSingleton.create(binding, cxt2) ;
            return QC.execute(op, subInput, cxt2) ;
        }
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        this.engine = engine ;
    }

    @Override
    protected QueryIterator nextStage(Binding binding) {
        QueryIterator qIter = engine.executeOp(opProject.getSubOp(),
                                               QueryIterSingleton.create(binding, getExecContext())) ;
        qIter = new QueryIterConvert(qIter,
                                     new ProjectEnsureBindingConverter(binding, opProject.getVars()),
                                     getExecContext()) ;
        return qIter ;
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        parse(in) ;
        if ( model == null )
            model = GraphFactory.makeJenaDefaultModel() ;
        if ( rows != null )
        {
            QueryIterator qIter = new QueryIterPlainWrapper(rows.iterator()) ;
            ResultSet rs = new ResultSetStream(Var.varNames(vars), model, qIter) ;
            super.set(rs) ;
        }
        else
            super.set(booleanResult) ;
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    @Override
    public QueryIterator iterator(ExecutionContext execCxt) {
        // Root binding?
        Binding binding = BindingFactory.binding(var, value) ;
        QueryIterator qIter = QueryIterSingleton.create(binding, var, value, execCxt) ;
        return qIter ;
    }
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            op = Substitute.substitute(op, binding) ;

        ExecutionContext execCxt = new ExecutionContext(context, dsg.getDefaultGraph(), dsg, QC.getFactory(context)) ;
        Evaluator eval = EvaluatorFactory.create(execCxt) ;
        Table table = Eval.eval(eval, op) ;
        QueryIterator qIter = table.iterator(execCxt) ;
        return QueryIteratorCheck.check(qIter, execCxt) ;
    }
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            getInput().close() ;
            return null ;
        }
       
        Binding binding = getInput().next() ;
        QueryIterator iter = nextStage(binding) ;
        return iter ;
    }
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Related Classes of com.hp.hpl.jena.sparql.engine.QueryIterator

  • arq.examples.AlgebraEx
  • arq.examples.AlgebraExec
  • arq.examples.bgpmatching.StageGeneratorAlt
  • arq.sse_query
  • com.hp.hpl.jena.query.BIOInput
  • com.hp.hpl.jena.sdb.compiler.OpSQL
  • com.hp.hpl.jena.sdb.engine.QueryEngineSDB
  • com.hp.hpl.jena.sdb.graph.GraphQueryHandlerSDB$BindingQueryPlanSDB
  • com.hp.hpl.jena.sdb.graph.GraphSDB
  • com.hp.hpl.jena.sdb.store.SQLBridgeBase
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