| package org.apache.lucene.codecs.simpletext; |
| |
| /* |
| * 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 java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.lucene.codecs.SegmentInfoWriter; |
| import org.apache.lucene.index.FieldInfos; |
| import org.apache.lucene.index.IndexFileNames; |
| import org.apache.lucene.index.SegmentInfo; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.IOContext; |
| import org.apache.lucene.store.IndexOutput; |
| import org.apache.lucene.util.BytesRef; |
| import org.apache.lucene.util.BytesRefBuilder; |
| import org.apache.lucene.util.IOUtils; |
| |
| /** |
| * writes plaintext segments files |
| * <p> |
| * <b><font color="red">FOR RECREATIONAL USE ONLY</font></B> |
| * @lucene.experimental |
| */ |
| public class SimpleTextSegmentInfoWriter extends SegmentInfoWriter { |
| |
| final static BytesRef SI_VERSION = new BytesRef(" version "); |
| final static BytesRef SI_DOCCOUNT = new BytesRef(" number of documents "); |
| final static BytesRef SI_USECOMPOUND = new BytesRef(" uses compound file "); |
| final static BytesRef SI_NUM_DIAG = new BytesRef(" diagnostics "); |
| final static BytesRef SI_DIAG_KEY = new BytesRef(" key "); |
| final static BytesRef SI_DIAG_VALUE = new BytesRef(" value "); |
| final static BytesRef SI_NUM_FILES = new BytesRef(" files "); |
| final static BytesRef SI_FILE = new BytesRef(" file "); |
| |
| @Override |
| public void write(Directory dir, SegmentInfo si, FieldInfos fis, IOContext ioContext) throws IOException { |
| |
| String segFileName = IndexFileNames.segmentFileName(si.name, "", SimpleTextSegmentInfoFormat.SI_EXTENSION); |
| si.addFile(segFileName); |
| |
| boolean success = false; |
| IndexOutput output = dir.createOutput(segFileName, ioContext); |
| |
| try { |
| BytesRefBuilder scratch = new BytesRefBuilder(); |
| |
| SimpleTextUtil.write(output, SI_VERSION); |
| SimpleTextUtil.write(output, si.getVersion().toString(), scratch); |
| SimpleTextUtil.writeNewline(output); |
| |
| SimpleTextUtil.write(output, SI_DOCCOUNT); |
| SimpleTextUtil.write(output, Integer.toString(si.getDocCount()), scratch); |
| SimpleTextUtil.writeNewline(output); |
| |
| SimpleTextUtil.write(output, SI_USECOMPOUND); |
| SimpleTextUtil.write(output, Boolean.toString(si.getUseCompoundFile()), scratch); |
| SimpleTextUtil.writeNewline(output); |
| |
| Map<String,String> diagnostics = si.getDiagnostics(); |
| int numDiagnostics = diagnostics == null ? 0 : diagnostics.size(); |
| SimpleTextUtil.write(output, SI_NUM_DIAG); |
| SimpleTextUtil.write(output, Integer.toString(numDiagnostics), scratch); |
| SimpleTextUtil.writeNewline(output); |
| |
| if (numDiagnostics > 0) { |
| for (Map.Entry<String,String> diagEntry : diagnostics.entrySet()) { |
| SimpleTextUtil.write(output, SI_DIAG_KEY); |
| SimpleTextUtil.write(output, diagEntry.getKey(), scratch); |
| SimpleTextUtil.writeNewline(output); |
| |
| SimpleTextUtil.write(output, SI_DIAG_VALUE); |
| SimpleTextUtil.write(output, diagEntry.getValue(), scratch); |
| SimpleTextUtil.writeNewline(output); |
| } |
| } |
| |
| Set<String> files = si.files(); |
| int numFiles = files == null ? 0 : files.size(); |
| SimpleTextUtil.write(output, SI_NUM_FILES); |
| SimpleTextUtil.write(output, Integer.toString(numFiles), scratch); |
| SimpleTextUtil.writeNewline(output); |
| |
| if (numFiles > 0) { |
| for(String fileName : files) { |
| SimpleTextUtil.write(output, SI_FILE); |
| SimpleTextUtil.write(output, fileName, scratch); |
| SimpleTextUtil.writeNewline(output); |
| } |
| } |
| |
| SimpleTextUtil.writeChecksum(output, scratch); |
| success = true; |
| } finally { |
| if (!success) { |
| IOUtils.closeWhileHandlingException(output); |
| IOUtils.deleteFilesIgnoringExceptions(dir, segFileName); |
| } else { |
| output.close(); |
| } |
| } |
| } |
| } |