Package com.hp.hpl.jena.sparql.algebra

Examples of com.hp.hpl.jena.sparql.algebra.Table

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    }

    @Override
    public void visit(OpProcedure opProc)
    {
        Table table = eval(opProc.getSubOp()) ;
        table = evaluator.procedure(table, opProc.getProcId(), opProc.getArgs()) ;
        push(table) ;
    }
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    }

    @Override
    public void visit(OpPropFunc opPropFunc)
    {
        Table table = eval(opPropFunc.getSubOp()) ;
        table = evaluator.propertyFunction(table, opPropFunc.getProperty(), opPropFunc.getSubjectArgs(), opPropFunc.getObjectArgs()) ;
        push(table) ;
    }
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    }

    @Override
    public void visit(OpJoin opJoin)
    {
        Table left = eval(opJoin.getLeft()) ;
        Table right = eval(opJoin.getRight()) ;
        Table table = evaluator.join(left, right) ;
        push(table) ;
    }
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    @Override
    public void visit(OpSequence opSequence)
    {
        // Evaluation is as a sequence of joins.
        Table table = TableFactory.createUnit() ;
       
        for ( Iterator<Op> iter = opSequence.iterator() ; iter.hasNext() ; )
        {
            Op op = iter.next() ;
            Table eltTable = eval(op) ;
            table = evaluator.join(table, eltTable) ;
        }
        push(table) ;
    }
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    @Override
    public void visit(OpDisjunction opDisjunction)
    {
        // Evaluation is as a concatentation of alternatives
        Table table = TableFactory.createEmpty() ;
       
        for ( Iterator<Op> iter = opDisjunction.iterator() ; iter.hasNext() ; )
        {
            Op op = iter.next() ;
            Table eltTable = eval(op) ;
            table = evaluator.union(table, eltTable) ;
        }
        push(table) ;
    }
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    }
   
    @Override
    public void visit(OpLeftJoin opLeftJoin)
    {
        Table left = eval(opLeftJoin.getLeft()) ;
        Table right = eval(opLeftJoin.getRight()) ;
        Table table = evaluator.leftJoin(left, right, opLeftJoin.getExprs()) ;
        push(table) ;
    }
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    }

    @Override
    public void visit(OpDiff opDiff)
    {
        Table left = eval(opDiff.getLeft()) ;
        Table right = eval(opDiff.getRight()) ;
        Table table = evaluator.diff(left, right) ;
        push(table) ;
    }
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    }

    @Override
    public void visit(OpMinus opMinus)
    {
        Table left = eval(opMinus.getLeft()) ;
        Table right = eval(opMinus.getRight()) ;
        Table table = evaluator.minus(left, right) ;
        push(table) ;
    }
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    }

    @Override
    public void visit(OpUnion opUnion)
    {
        Table left = eval(opUnion.getLeft()) ;
        Table right = eval(opUnion.getRight()) ;
        Table table = evaluator.union(left, right) ;
        push(table) ;
    }
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    }

    @Override
    public void visit(OpConditional opCond)
    {
        Table left = eval(opCond.getLeft()) ;
        // Ref engine - don;'t care about efficiency
        Table right = eval(opCond.getRight()) ;
        Table table = evaluator.condition(left, right) ;
        push(table) ;
    }
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Related Classes of com.hp.hpl.jena.sparql.algebra.Table

  • arq.examples.propertyfunction.labelSearch
  • com.hp.hpl.jena.sparql.algebra.op.OpJoin
  • com.hp.hpl.jena.sparql.algebra.optimize.TransformFilterInequality
  • com.hp.hpl.jena.sparql.algebra.table.TableBase
  • com.hp.hpl.jena.sparql.engine.main.iterator.QueryIterJoinBase
  • com.hp.hpl.jena.sparql.engine.ref.Eval
  • com.hp.hpl.jena.sparql.engine.ref.EvaluatorDispatch
  • com.hp.hpl.jena.sparql.engine.ref.QueryEngineRef
  • com.hp.hpl.jena.sparql.graph.NodeTransformOp
  • com.hp.hpl.jena.sparql.sse.builders.BuilderTable
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