| /* |
| * 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.tdb.solver; |
| |
| import java.util.Iterator ; |
| |
| import org.apache.jena.atlas.iterator.Iter ; |
| import org.apache.jena.sparql.engine.ExecutionContext ; |
| import org.apache.jena.sparql.engine.binding.Binding ; |
| import org.apache.jena.sparql.engine.iterator.QueryIter ; |
| import org.apache.jena.tdb.store.nodetable.NodeTable ; |
| |
| /** Wrap a iterator of BindingNodeId to get a QueryIterator of Bindings. */ |
| |
| public class QueryIteratorIdToNode extends QueryIter |
| { |
| Iterator<BindingNodeId> iterator ; |
| Iterator<Binding> iteratorBinding ; |
| |
| // UNUSED - See SolverLib |
| private QueryIteratorIdToNode(Iterator<BindingNodeId> iterator, NodeTable nodeTable, ExecutionContext execCxt) |
| { |
| super(execCxt) ; |
| this.iterator = iterator ; |
| this.iteratorBinding = SolverLib.convertToNodes(iterator, nodeTable) ; |
| } |
| |
| @Override |
| protected void closeIterator() |
| { |
| Iter.close(iterator) ; |
| Iter.close(iteratorBinding) ; |
| } |
| |
| // Asynchronous request to cancel. |
| @Override |
| protected void requestCancel() |
| {} |
| |
| @Override |
| protected boolean hasNextBinding() |
| { |
| return iteratorBinding.hasNext() ; |
| } |
| |
| @Override |
| protected Binding moveToNextBinding() |
| { |
| return iteratorBinding.next() ; |
| } |
| } |