Examples with NodeTable org.apache.jena.tdb2.store.nodetable.NodeTable used on opensource projects

Example 26 with NodeTable

use of org.apache.jena.tdb2.store.nodetable.NodeTable in project jena by apache.

the class SolverLibTDB method convToBinding.

static Binding convToBinding(BindingNodeId bindingNodeIds, NodeTable nodeTable) {
    if (true)
        return new BindingTDB(bindingNodeIds, nodeTable);
    else {
        // Makes nodes immediately. Causing unnecessary NodeTable accesses
        // (e.g. project)
        BindingBuilder builder = Binding.builder();
        for (Var v : bindingNodeIds) {
            NodeId id = bindingNodeIds.get(v);
            Node n = nodeTable.getNodeForNodeId(id);
            builder.add(v, n);
        }
        return builder.build();
    }
}

Example 27 with NodeTable

use of org.apache.jena.tdb2.store.nodetable.NodeTable in project jena by apache.

the class SolverLibTDB method convert.

/**
 * Binding {@literal ->} BindingNodeId, given a NodeTable
 */
static BindingNodeId convert(Binding binding, NodeTable nodeTable) {
    if (binding instanceof BindingTDB)
        return ((BindingTDB) binding).getBindingId();
    BindingNodeId b = new BindingNodeId(binding);
    // and copy over, getting NodeIds.
    Iterator<Var> vars = binding.vars();
    for (; vars.hasNext(); ) {
        Var v = vars.next();
        Node n = binding.get(v);
        if (n == null)
            // Can occur with BindingProject
            continue;
        // Rely on the node table cache for efficency - we will likely be
        // repeatedly looking up the same node in different bindings.
        NodeId id = nodeTable.getNodeIdForNode(n);
        // Even put in "does not exist" for a node now known not to be in the DB.
        // Optional: whether to put in "known missing"
        // Currently, we do. The rest of the code should work with either choice.
        // if ( ! NodeId.isDoesNotExist(id) )
        b.put(v, id);
    }
    return b;
}

Example 28 with NodeTable

use of org.apache.jena.tdb2.store.nodetable.NodeTable in project jena by apache.

the class TDB2StorageBuilder method buildNodeTable.

private NodeTable buildNodeTable(String name, boolean isData) {
    NodeTable nodeTable = buildBaseNodeTable(name);
    nodeTable = addNodeTableCache(nodeTable, params, isData);
    if (nodeTable instanceof NodeTableCache) {
        NodeTableCache nodeTableCache = (NodeTableCache) nodeTable;
        listeners.add(nodeTableCache);
    }
    nodeTable = NodeTableInline.create(nodeTable);
    return nodeTable;
}

Example 29 with NodeTable

use of org.apache.jena.tdb2.store.nodetable.NodeTable in project jena by apache.

the class BindingTDB method get1.

@Override
public Node get1(Var var) {
    try {
        Node n = cacheGet(var);
        if (n != null)
            return n;
        NodeId id = idBinding.get(var);
        if (id == null)
            return null;
        if (NodeId.isDoesNotExist(id))
            return null;
        n = nodeTable.getNodeForNodeId(id);
        if (n == null)
            // But there was to put it in the BindingNodeId.
            throw new TDBException("No node in NodeTable for NodeId " + id);
        // Update cache.
        cachePut(var, n);
        return n;
    } catch (Exception ex) {
        Log.error(this, String.format("get1(%s)", var), ex);
        return null;
    }
}

Example 30 with NodeTable

use of org.apache.jena.tdb2.store.nodetable.NodeTable in project jena by apache.

the class SolverRX method accessData.

static Iterator<Quad> accessData(Tuple<Node> patternTuple, NodeTupleTable nodeTupleTable, boolean anyGraph, Predicate<Tuple<NodeId>> filter, ExecutionContext execCxt) {
    NodeTable nodeTable = nodeTupleTable.getNodeTable();
    Function<Tuple<NodeId>, Quad> asQuad = asQuad(nodeTable, nodeTupleTable.getTupleLen(), anyGraph);
    Tuple<NodeId> patternTupleId = TupleLib.tupleNodeIds(nodeTable, patternTuple);
    if (patternTupleId.contains(NodeId.NodeDoesNotExist))
        // Can not match.
        return Iter.nullIterator();
    // -- DRY/StageMatchTuple ??
    Iterator<Tuple<NodeId>> iterMatches = nodeTupleTable.find(patternTupleId);
    // Add filter
    if (filter != null)
        iterMatches = Iter.filter(iterMatches, filter);
    // Add anyGraph
    if (anyGraph) {
        // See StageMatchTuple for discussion.
        iterMatches = Iter.map(iterMatches, quadsToAnyTriples);
        iterMatches = Iter.distinctAdjacent(iterMatches);
    }
    // -- DRY/StageMatchTuple
    Iterator<Quad> qIter = Iter.map(iterMatches, asQuad);
    return qIter;
}