| package org.apache.lucene.codecs.lucene3x; |
| |
| /** |
| * 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. |
| */ |
| |
| import java.io.IOException; |
| |
| import org.apache.lucene.codecs.TermVectorsReader; |
| import org.apache.lucene.codecs.TermVectorsWriter; |
| import org.apache.lucene.index.FieldInfos; |
| import org.apache.lucene.index.SegmentInfo; |
| import org.apache.lucene.index.SegmentReadState; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.IOContext; |
| import org.apache.lucene.util.LuceneTestCase; |
| |
| class PreFlexRWTermVectorsFormat extends Lucene3xTermVectorsFormat { |
| |
| @Override |
| public TermVectorsWriter vectorsWriter(Directory directory, String segment, IOContext context) throws IOException { |
| return new PreFlexRWTermVectorsWriter(directory, segment, context); |
| } |
| |
| @Override |
| public TermVectorsReader vectorsReader(SegmentReadState state) throws IOException { |
| return new Lucene3xTermVectorsReader(state.dir, state.segmentInfo, state.fieldInfos, state.context) { |
| @Override |
| protected boolean sortTermsByUnicode() { |
| // We carefully peek into stack track above us: if |
| // we are part of a "merge", we must sort by UTF16: |
| boolean unicodeSortOrder = true; |
| |
| StackTraceElement[] trace = new Exception().getStackTrace(); |
| for (int i = 0; i < trace.length; i++) { |
| //System.out.println(trace[i].getClassName()); |
| if ("merge".equals(trace[i].getMethodName())) { |
| unicodeSortOrder = false; |
| if (LuceneTestCase.VERBOSE) { |
| System.out.println("NOTE: PreFlexRW codec: forcing legacy UTF16 vector term sort order"); |
| } |
| break; |
| } |
| } |
| |
| return unicodeSortOrder; |
| } |
| }; |
| } |
| } |