| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.jena.tdb2.store; |
| |
| import java.util.Iterator; |
| |
| import org.apache.jena.atlas.iterator.Iter; |
| import org.apache.jena.atlas.lib.tuple.Tuple; |
| import org.apache.jena.dboe.base.file.Location; |
| import org.apache.jena.dboe.storage.StoragePrefixes; |
| import org.apache.jena.dboe.storage.system.DatasetGraphStorage; |
| import org.apache.jena.dboe.transaction.txn.TransactionalSystem; |
| import org.apache.jena.graph.Graph; |
| import org.apache.jena.graph.Node; |
| import org.apache.jena.sparql.core.Quad; |
| import org.apache.jena.sparql.engine.optimizer.reorder.ReorderTransformation; |
| import org.apache.jena.tdb2.TDBException; |
| import org.apache.jena.tdb2.lib.NodeLib; |
| import org.apache.jena.tdb2.params.StoreParams; |
| import org.apache.jena.tdb2.store.nodetupletable.NodeTupleTable; |
| |
| final |
| public class DatasetGraphTDB extends DatasetGraphStorage |
| { |
| private final StorageTDB storageTDB; |
| private final Location location; |
| private final TransactionalSystem txnSystem; |
| private final StoreParams storeParams; |
| private final ReorderTransformation reorderTransformation; |
| private boolean isClosed = false; |
| |
| public DatasetGraphTDB(Location location, StoreParams params, ReorderTransformation reorderTransformation, |
| StorageTDB storage, StoragePrefixes prefixes, TransactionalSystem txnSystem) { |
| super(storage, prefixes, txnSystem); |
| this.storageTDB = storage; |
| this.location = location; |
| this.storeParams = params; |
| this.txnSystem = txnSystem; |
| this.reorderTransformation = reorderTransformation; |
| } |
| |
| private void checkNotClosed() { |
| if ( isClosed ) |
| throw new TDBException("dataset closed"); |
| } |
| |
| @Override |
| public boolean supportsTransactionAbort() { |
| return true; |
| } |
| |
| public Location getLocation() { |
| return location; |
| } |
| |
| public QuadTable getQuadTable() { |
| checkNotClosed(); |
| return storageTDB.getQuadTable(); |
| } |
| |
| public TripleTable getTripleTable() { |
| checkNotClosed(); |
| return storageTDB.getTripleTable(); |
| } |
| |
| public TransactionalSystem getTxnSystem() { |
| return txnSystem; |
| } |
| |
| public StoreParams getStoreParams() { |
| return storeParams; |
| } |
| |
| public ReorderTransformation getReorderTransform() { |
| return reorderTransformation; |
| } |
| |
| @Override |
| public void close() { |
| isClosed = true; |
| super.close(); |
| } |
| |
| public void shutdown() { |
| close(); |
| txnSystem.getTxnMgr().shutdown(); |
| } |
| |
| @Override |
| public Graph getDefaultGraph() { |
| return getDefaultGraphTDB(); |
| } |
| |
| @Override |
| public Graph getGraph(Node graphNode) { |
| return getGraphTDB(graphNode); |
| } |
| |
| @Override |
| public Graph getUnionGraph() { |
| return getUnionGraphTDB(); |
| } |
| |
| public GraphTDB getDefaultGraphTDB() { |
| checkNotClosed(); |
| return GraphTDB.tdb_createDefaultGraph(this, getPrefixes()); |
| } |
| |
| public GraphTDB getGraphTDB(Node graphNode) { |
| checkNotClosed(); |
| return GraphTDB.tdb_createNamedGraph(this, graphNode, getPrefixes()); |
| } |
| |
| public GraphTDB getUnionGraphTDB() { |
| checkNotClosed(); |
| return GraphTDB.tdb_createUnionGraph(this, getPrefixes()); |
| } |
| |
| @Override |
| public Iterator<Node> listGraphNodes() { |
| checkNotClosed(); |
| NodeTupleTable quads = getQuadTable().getNodeTupleTable(); |
| Iterator<Tuple<NodeId>> x = quads.findAll(); |
| // XXX Future: Ensure we scan a G??? index and use distinctAdjacent. |
| // See TupleTable.chooseScanAllIndex |
| Iterator<NodeId> z = Iter.iter(x).map(t -> t.get(0)).distinct(); |
| Iterator<Node> r = NodeLib.nodes(quads.getNodeTable(), z); |
| return r; |
| } |
| |
| public NodeTupleTable chooseNodeTupleTable(Node graphNode) { |
| checkNotClosed(); |
| if ( graphNode == null || Quad.isDefaultGraph(graphNode) ) |
| return getTripleTable().getNodeTupleTable(); |
| else |
| // Includes Node.ANY and union graph |
| return getQuadTable().getNodeTupleTable(); |
| } |
| } |