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

Examples of com.hp.hpl.jena.sparql.engine.optimizer.reorder.ReorderTransformation

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            System.err.println("Not a quad or triple pattern") ;
            System.exit(2) ;
            bgp = null ;
        }
       
        ReorderTransformation reorder = chooseReorder(statsFile) ;
        //ReorderTransformation reorder = ReorderLib.fixed() ;
        BasicPattern bgp2 = reorder.reorder(bgp) ;
    
        System.out.println() ;
       
        print(bgp) ;
        System.out.println() ;
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        // -- Input
        // Must pass this iterator into the next stage.
        if ( pattern.size() >= 2 )
        {
            // Must be 2 or triples to reorder.
            ReorderTransformation transform = graph.getDSG().getReorderTransform() ;
            if ( transform != null )
            {
                QueryIterPeek peek = QueryIterPeek.create(input, execCxt) ;
                input = peek ; // Must pass on
                pattern = reorder(pattern, peek, transform) ;
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            return optimizeExecuteTriples(ds.getEffectiveDefaultGraph(), input, bgp, exprs, execCxt) ;
       
        // ---- Execute quads+filters
        if ( bgp.size() >= 2 )
        {
            ReorderTransformation transform = ds.getReorderTransform() ;
   
            if ( transform != null )
            {
                QueryIterPeek peek = QueryIterPeek.create(input, execCxt) ;
                input = peek ; // Original input now invalid.
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        TripleTable tripleTable = makeTripleTable(location, nodeTable, policy) ;
        QuadTable quadTable = makeQuadTable(location, nodeTable, policy) ;
        DatasetPrefixesTDB prefixes = makePrefixTable(location, policy) ;
       
        ReorderTransformation transform = (_transform==null) ? chooseReorderTransformation(location) : _transform ;
       
        StorageConfig storageConfig = new StorageConfig(location, params, readonly, blockMgrs, bufferChannels, nodeTables) ;
        DatasetGraphTDB dsg = new DatasetGraphTDB(tripleTable, quadTable, prefixes, transform, storageConfig) ;
        // TDB does filter placement on BGPs itself.
        dsg.getContext().set(ARQ.optFilterPlacementBGP, false);
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    public static ReorderTransformation chooseOptimizer(Location location)
    {
        if ( location == null )
            return ReorderLib.identity() ;

        ReorderTransformation reorder = null ;
        if ( location.exists(Names.optStats) )
        {
            try {
                reorder = ReorderLib.weighted(location.getPath(Names.optStats)) ;
                log.debug("Statistics-based BGP optimizer") ; 
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        //nodeTable = new NodeTableLogger(null, nodeTable) ;
       
        TripleTable tripleTable = makeTripleTable(location, nodeTable, policy) ;
        QuadTable quadTable = makeQuadTable(location, nodeTable, policy) ;
        DatasetPrefixesTDB prefixes = makePrefixTable(location, policy) ;
        ReorderTransformation transform  = chooseReorderTransformation(location) ;
       
        DatasetGraphTDB dsg = new DatasetGraphTDB(tripleTable, quadTable, prefixes, transform, null) ;
        // TDB does filter placement on BGPs itself.
        dsg.getContext().set(ARQ.optFilterPlacementBGP, false);
        QC.setFactory(dsg.getContext(), OpExecutorTDB1.OpExecFactoryTDB) ;
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        Graph graph = execCxt.getActiveGraph() ;

        // Choose reorder transformation and execution strategy.

        ReorderTransformation reorder = reorderFixed ;
        StageGenerator executor = StageBuilder.executeInline ;

        return execute(pattern, reorder, executor, input, execCxt) ;
    }
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        // -- Input
        // Must pass this iterator into the next stage.
        if ( pattern.size() >= 2 )
        {
            // Must be 2 or triples to reorder.
            ReorderTransformation transform = graph.getDSG().getReorderTransform() ;
            if ( transform != null )
            {
                QueryIterPeek peek = QueryIterPeek.create(input, execCxt) ;
                input = peek ; // Must pass on
                pattern = reorder(pattern, peek, transform) ;
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            return optimizeExecuteTriples(ds.getEffectiveDefaultGraph(), input, bgp, exprs, execCxt) ;
       
        // ---- Execute quads+filters
        if ( bgp.size() >= 2 )
        {
            ReorderTransformation transform = ds.getReorderTransform() ;
   
            if ( transform != null )
            {
                QueryIterPeek peek = QueryIterPeek.create(input, execCxt) ;
                input = peek ; // Original input now invalid.
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        TripleTable tripleTable = makeTripleTable(location, nodeTable, policy) ;
        QuadTable quadTable = makeQuadTable(location, nodeTable, policy) ;
        DatasetPrefixesTDB prefixes = makePrefixTable(location, policy) ;
       
        ReorderTransformation transform = (_transform==null) ? chooseReorderTransformation(location) : _transform ;
       
        StorageConfig storageConfig = new StorageConfig(location, params, readonly, blockMgrs, bufferChannels, nodeTables) ;
        DatasetGraphTDB dsg = new DatasetGraphTDB(tripleTable, quadTable, prefixes, transform, storageConfig) ;
        return dsg ;
    }
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Related Classes of com.hp.hpl.jena.sparql.engine.optimizer.reorder.ReorderTransformation

  • com.hp.hpl.jena.sparql.engine.main.StageGeneratorGeneric
  • com.hp.hpl.jena.sparql.solver.TestReorder
  • com.hp.hpl.jena.tdb.graph.basics.FactoryGraphTDB
  • com.hp.hpl.jena.tdb.setup.DatasetBuilderBasic
  • com.hp.hpl.jena.tdb.setup.DatasetBuilderStd
  • com.hp.hpl.jena.tdb.solver.OpExecutorTDB
  • com.hp.hpl.jena.tdb.solver.OpExecutorTDB1
  • com.hp.hpl.jena.tdb.sys.SetupTDB_OLD
  • tdb.tdbreorder
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