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

Example 36 with NodeId

use of org.apache.jena.tdb2.store.NodeId 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 37 with NodeId

use of org.apache.jena.tdb2.store.NodeId 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 38 with NodeId

use of org.apache.jena.tdb2.store.NodeId in project jena by apache.

the class NodeTableCache method _idForNode.

// Node ==> NodeId
private NodeId _idForNode(Node node, boolean allocate) {
    if (node == Node.ANY)
        return NodeId.NodeIdAny;
    // Try once outside the synchronized
    // (Cache access is thread-safe.)
    NodeId nodeId = cacheLookup(node);
    if (nodeId != null)
        return nodeId;
    synchronized (lock) {
        // Update two caches inside synchronized.
        // Check still valid.
        nodeId = cacheLookup(node);
        if (nodeId != null)
            return nodeId;
        if (allocate)
            nodeId = baseTable.getAllocateNodeId(node);
        else {
            if (notPresent(node))
                // Known not be in the baseTable.
                return NodeId.NodeDoesNotExist;
            else
                nodeId = baseTable.getNodeIdForNode(node);
        }
        // Ensure caches have it. Includes recording "no such node"
        cacheUpdate(node, nodeId);
        return nodeId;
    }
}

Example 39 with NodeId

use of org.apache.jena.tdb2.store.NodeId in project jena by apache.

the class NodeTableTRDF method writeNodeToTable.

@Override
protected NodeId writeNodeToTable(Node node) {
    RDF_Term term = ThriftConvert.convert(node, true);
    try {
        long x = diskFile.length();
        // Paired : [*]
        NodeId nid = NodeIdFactory.createPtr(x);
        term.write(protocol);
        // transport.flush();
        return nid;
    } catch (TransactionException ex) {
        throw ex;
    } catch (Exception ex) {
        throw new TDBException("NodeTableThrift/Write", ex);
    }
}

Example 40 with NodeId

use of org.apache.jena.tdb2.store.NodeId in project jena by apache.

the class NodeTableTRDF method readNodeFromTable.

@Override
protected Node readNodeFromTable(NodeId id) {
    try {
        // Paired : [*]
        long x = id.getPtrLocation();
        transport.readPosition(x);
        RDF_Term term = new RDF_Term();
        term.read(protocol);
        Node n = ThriftConvert.convert(term);
        return n;
    } catch (TException ex) {
        throw new TDBException("NodeTableTRDF/Read", ex);
    } catch (RiotThriftException ex) {
        Log.error(this, "Bad encoding: NodeId = " + id);
        throw ex;
    }
}