| /* |
| * 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.lucene.spatial.prefix; |
| |
| import java.util.Iterator; |
| |
| import org.apache.lucene.spatial.prefix.tree.Cell; |
| import org.apache.lucene.util.BytesRef; |
| import org.apache.lucene.util.BytesRefIterator; |
| |
| /** |
| * A reset'able {@link org.apache.lucene.util.BytesRefIterator} wrapper around |
| * an {@link java.util.Iterator} of {@link org.apache.lucene.spatial.prefix.tree.Cell}s. |
| * |
| * @see PrefixTreeStrategy#newCellToBytesRefIterator() |
| * |
| * @lucene.internal |
| */ |
| public class CellToBytesRefIterator implements BytesRefIterator { |
| |
| protected Iterator<Cell> cellIter; |
| protected BytesRef bytesRef = new BytesRef(); |
| |
| public void reset(Iterator<Cell> cellIter) { |
| this.cellIter = cellIter; |
| } |
| |
| @Override |
| public BytesRef next() { |
| if (!cellIter.hasNext()) { |
| return null; |
| } |
| return cellIter.next().getTokenBytesWithLeaf(bytesRef); |
| } |
| } |