| /* |
| * 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.graph.Node; |
| import org.apache.jena.graph.Triple; |
| import org.apache.jena.tdb2.lib.TupleLib; |
| import org.apache.jena.tdb2.store.nodetable.NodeTable; |
| import org.apache.jena.tdb2.store.tupletable.TupleIndex; |
| |
| /** |
| * TripleTable - a collection of TupleIndexes for 3-tuples together with a node |
| * table. Normally, based on 3 indexes (SPO, POS, OSP) but other indexing |
| * structures can be configured. |
| */ |
| |
| public class TripleTable extends TableBase { |
| public TripleTable(TupleIndex[] indexes, NodeTable nodeTable) { |
| super(3, indexes, nodeTable); |
| } |
| |
| /** Add triple */ |
| public void add(Triple triple) { |
| add(triple.getSubject(), triple.getPredicate(), triple.getObject()); |
| } |
| |
| /** Add triple */ |
| public void add(Node s, Node p, Node o) { |
| table.addRow(s, p, o); |
| } |
| |
| /** Delete a triple */ |
| public void delete(Triple triple) { |
| delete(triple.getSubject(), triple.getPredicate(), triple.getObject()); |
| } |
| |
| /** Delete a triple */ |
| public void delete(Node s, Node p, Node o) { |
| table.deleteRow(s, p, o); |
| } |
| |
| /** Find matching triples */ |
| public Iterator<Triple> find(Node s, Node p, Node o) { |
| Iterator<Tuple<NodeId>> iter = table.findAsNodeIds(s, p, o); |
| if ( iter == null ) |
| return Iter.nullIterator(); |
| Iterator<Triple> iter2 = TupleLib.convertToTriples(table.getNodeTable(), iter); |
| return iter2; |
| } |
| |
| /** Clear - does not clear the associated node tuple table */ |
| public void clearTriples() { |
| table.clear(); |
| } |
| } |