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

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

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    }
   
    @Test public void stats_01()
    {
        StatsMatcher m = matcher("((:x :p ANY) 5)") ;
        ReorderTransformation transform = new ReorderWeighted(m) ;
        BasicPattern bgp = bgp("(bgp)") ;
        BasicPattern bgp2 = transform.reorder(bgp) ;
        assertEquals(bgp2, bgp) ;
    }
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    }
   
   
    @Test public void stats_dft_01()
    {
        ReorderTransformation transform = ReorderLib.fixed() ;
        BasicPattern bgp = bgp("(bgp)") ;
        BasicPattern bgp2 = transform.reorder(bgp) ;
        assertEquals(bgp2, bgp) ;
    }
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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)) ;
                logInfo.debug("Statistics-based BGP optimizer") ; 
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                                            params.Node2NodeIdCacheSize, params.NodeId2NodeCacheSize, params.NodeMissCacheSize) ;
       
        TripleTable tripleTable = makeTripleTable(location, nodeTable, policy) ;
        QuadTable quadTable = makeQuadTable(location, nodeTable, policy) ;
        DatasetPrefixesTDB prefixes = makePrefixTable(location, policy) ;
        ReorderTransformation transform  = chooseReorderTransformation(location) ;
       
        StoreConfig storeConfig = new StoreConfig(location, params, blockMgrs, bufferChannels, nodeTables) ;
        DatasetGraphTDB dsg = new DatasetGraphTDB(tripleTable, quadTable, prefixes, transform, storeConfig) ;
        return dsg ;
    }
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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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        if ( ! input.hasNext() )
            return input ;
   
        // -- Input
        // Must pass this iterator into the next stage.
        ReorderTransformation transform = graph.getReorderTransform() ;
        if ( transform != null )
        {
            QueryIterPeek peek = QueryIterPeek.create(input, execCxt) ;
            input = peek ; // Must pass on
            pattern = reorder(pattern, peek, transform) ;
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        gn = decideGraphNode(gn, execCxt) ;
        if ( gn == null )
            return optimizeExecuteTriples(ds.getEffectiveDefaultGraph(), input, bgp, exprs, execCxt) ;
       
        // ---- Execute quads+filters
        ReorderTransformation transform = ds.getTransform() ;

        if ( transform != null )
        {
            QueryIterPeek peek = QueryIterPeek.create(input, execCxt) ;
            input = peek ; // Original input now invalid.
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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) ;
        return dsg ;
    }
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    }
   
    @Test public void stats_01()
    {
        StatsMatcher m = matcher("((:x :p ANY) 5)") ;
        ReorderTransformation transform = new ReorderWeighted(m) ;
        BasicPattern bgp = bgp("(bgp)") ;
        BasicPattern bgp2 = transform.reorder(bgp) ;
        assertEquals(bgp2, bgp) ;
    }
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    }
   
   
    @Test public void stats_dft_01()
    {
        ReorderTransformation transform = ReorderLib.fixed() ;
        BasicPattern bgp = bgp("(bgp)") ;
        BasicPattern bgp2 = transform.reorder(bgp) ;
        assertEquals(bgp2, bgp) ;
    }
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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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