Examples of OpOrder

com.hp.hpl.jena.sparql.algebra.op.OpOrder
org.apache.cassandra.utils.concurrent.OpOrder
} public void consume() { SharedState state = this.state; state.setReplacement(new State()) state.doSomethingToPrepareForBarrier(); state.barrier = order.newBarrier(); // seal() MUST be called after newBarrier() else barrier.isAfter() // will always return true, and barrier.await() will fail state.barrier.issue(); // wait for all producer work started prior to the barrier to complete state.barrier.await(); // change the shared state to its replacement, as the current state will no longer be used by producers this.state = state.getReplacement(); state.doSomethingWithExclusiveAccess(); } public void produce() { Group opGroup = order.start(); try { SharedState s = state; while (s.barrier != null && !s.barrier.isAfter(opGroup)) s = s.getReplacement(); s.doProduceWork(); } finally { opGroup.finishOne(); } } }

Examples of com.hp.hpl.jena.sparql.algebra.op.OpOrder

    
    
    @Override
    public Op transform(OpDistinct opDistinct, Op subOp) {
        
        OpOrder opOrder = null ;
        Set<Var> projectVars = null ;
        /*   SELECT DISTINCT * {} ORDER BY
         * giving an alegbra expression of the form:  
         *   (distinct
         *     (order

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Examples of com.hp.hpl.jena.sparql.algebra.op.OpOrder

            return super.transform(opSlice, subOp) ;
            
        if ( subOp instanceof OpOrder ) 
        {
            // First case: slice-order
            OpOrder opOrder = (OpOrder)subOp ;
            OpTopN opTopN = new OpTopN( opOrder.getSubOp(), (int)(offset+opSlice.getLength()), opOrder.getConditions() ) ;
            if ( offset == 0 ) {
                return opTopN ;
            } else {
                return new OpSlice( opTopN, offset, Query.NOLIMIT ) ;                  
            }
        }


        if ( subOp instanceof OpDistinct || subOp instanceof OpReduced )
        {
            // Second case: slice-distinct-order or slice-reduced-order 
            Op subSubOp = ((Op1)subOp).getSubOp() ;
            if ( subSubOp instanceof OpOrder ) {
                OpOrder opOrder = (OpOrder)subSubOp ;
                Op opDistinct2 = OpDistinct.create(opOrder.getSubOp()) ;
                OpTopN opTopN = new OpTopN( opDistinct2, (int)(offset+opSlice.getLength()), opOrder.getConditions() ) ; 
                if ( offset == 0 ) {
                    return opTopN ;
                } else {
                    return new OpSlice( opTopN, offset, Query.NOLIMIT ) ;                       
                }
            }
        }


        if ( subOp instanceof OpProject )
        {
            // Third case: slice-project-order 
            Op subSubOp = ((Op1)subOp).getSubOp() ;
            if ( subSubOp instanceof OpOrder ) 
            {
                OpProject opProject = (OpProject)subOp ;
                OpOrder opOrder = (OpOrder)subSubOp ;
                // NB leave project over topN, unlike the distinct case where distinct goes under topN.
                OpTopN opTopN = new OpTopN( opOrder.getSubOp(), (int)(offset+opSlice.getLength()), opOrder.getConditions() ) ;
                Op proj = new OpProject(opTopN, opProject.getVars()) ;
                if ( offset == 0 ) {
                    return proj ;
                } else {
                    return new OpSlice( proj, offset, Query.NOLIMIT ) ;

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Examples of com.hp.hpl.jena.sparql.algebra.op.OpOrder

    {
        List<SortCondition> conditions = NodeTransformLib.transform(transform, opOrder.getConditions()) ;
        
        if ( conditions == opOrder.getConditions() )
            return super.transform(opOrder, subOp) ;
        return new OpOrder(subOp, conditions) ;
    }

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Examples of com.hp.hpl.jena.sparql.algebra.op.OpOrder

    //@Override
    public Op transform1(OpDistinct opDistinct, Op subOp) {
        if (subOp instanceof OpProject) {
            OpProject opProject = (OpProject) subOp;
            if (opProject.getSubOp() instanceof OpOrder) {
                OpOrder opOrder = (OpOrder) opProject.getSubOp();
                Set<Var> projectVars = new HashSet<Var>(opProject.getVars()) ;
                if (isSafe(projectVars, opOrder)) {
                    return OpReduced.create(subOp);
                }
            }

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Examples of com.hp.hpl.jena.sparql.algebra.op.OpOrder

    
    
    @Override
    public Op transform(OpDistinct opDistinct, Op subOp) {
        
        OpOrder opOrder = null ;
        Set<Var> projectVars = null ;
        /*   SELECT DISTINCT * {} ORDER BY
         * giving an alegbra expression of the form:  
         *   (distinct
         *     (order

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Examples of org.apache.cassandra.utils.concurrent.OpOrder

    private static final Pool POOL = new HeapPool(Integer.MAX_VALUE, 1f, null);


    /** Allocates 1 byte from a new SlabAllocator and returns it. */
    private AbstractAllocator bumpedSlab()
    {
        AbstractAllocator allocator = POOL.newAllocator(new OpOrder());
        allocator.allocate(1);
        return allocator;
    }

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Examples of org.apache.cassandra.utils.concurrent.OpOrder

    }


    private static int estimateRowOverhead(final int count)
    {
        // calculate row overhead
        final OpOrder.Group group = new OpOrder().start();
        int rowOverhead;
        MemtableAllocator allocator = MEMORY_POOL.newAllocator();
        ConcurrentNavigableMap<RowPosition, Object> rows = new ConcurrentSkipListMap<>();
        final Object val = new Object();
        for (int i = 0 ; i < count ; i++)

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Examples of org.apache.cassandra.utils.concurrent.OpOrder

    }


    private static int estimateRowOverhead(final int count)
    {
        // calculate row overhead
        final OpOrder.Group group = new OpOrder().start();
        int rowOverhead;
        MemtableAllocator allocator = MEMORY_POOL.newAllocator();
        ConcurrentNavigableMap<RowPosition, Object> rows = new ConcurrentSkipListMap<>();
        final Object val = new Object();
        for (int i = 0 ; i < count ; i++)

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