| 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 org.apache.lucene.codecs.FieldInfosWriter; |
| import org.apache.lucene.index.FieldInfo; |
| import org.apache.lucene.index.FieldInfo.DocValuesType; |
| import org.apache.lucene.index.FieldInfos; |
| import org.apache.lucene.index.IndexFileNames; |
| import org.apache.lucene.index.FieldInfo.IndexOptions; |
| 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.IOUtils; |
| |
| /** |
| * writes plaintext field infos files |
| * <p> |
| * <b><font color="red">FOR RECREATIONAL USE ONLY</font></B> |
| * @lucene.experimental |
| */ |
| public class SimpleTextFieldInfosWriter extends FieldInfosWriter { |
| |
| /** Extension of field infos */ |
| static final String FIELD_INFOS_EXTENSION = "inf"; |
| |
| static final BytesRef NUMFIELDS = new BytesRef("number of fields "); |
| static final BytesRef NAME = new BytesRef(" name "); |
| static final BytesRef NUMBER = new BytesRef(" number "); |
| static final BytesRef ISINDEXED = new BytesRef(" indexed "); |
| static final BytesRef STORETV = new BytesRef(" term vectors "); |
| static final BytesRef STORETVPOS = new BytesRef(" term vector positions "); |
| static final BytesRef STORETVOFF = new BytesRef(" term vector offsets "); |
| static final BytesRef PAYLOADS = new BytesRef(" payloads "); |
| static final BytesRef NORMS = new BytesRef(" norms "); |
| static final BytesRef NORMS_TYPE = new BytesRef(" norms type "); |
| static final BytesRef DOCVALUES = new BytesRef(" doc values "); |
| static final BytesRef DOCVALUES_GEN = new BytesRef(" doc values gen "); |
| static final BytesRef INDEXOPTIONS = new BytesRef(" index options "); |
| static final BytesRef NUM_ATTS = new BytesRef(" attributes "); |
| final static BytesRef ATT_KEY = new BytesRef(" key "); |
| final static BytesRef ATT_VALUE = new BytesRef(" value "); |
| |
| @Override |
| public void write(Directory directory, String segmentName, String segmentSuffix, FieldInfos infos, IOContext context) throws IOException { |
| final String fileName = IndexFileNames.segmentFileName(segmentName, segmentSuffix, FIELD_INFOS_EXTENSION); |
| IndexOutput out = directory.createOutput(fileName, context); |
| BytesRef scratch = new BytesRef(); |
| boolean success = false; |
| try { |
| SimpleTextUtil.write(out, NUMFIELDS); |
| SimpleTextUtil.write(out, Integer.toString(infos.size()), scratch); |
| SimpleTextUtil.writeNewline(out); |
| |
| for (FieldInfo fi : infos) { |
| SimpleTextUtil.write(out, NAME); |
| SimpleTextUtil.write(out, fi.name, scratch); |
| SimpleTextUtil.writeNewline(out); |
| |
| SimpleTextUtil.write(out, NUMBER); |
| SimpleTextUtil.write(out, Integer.toString(fi.number), scratch); |
| SimpleTextUtil.writeNewline(out); |
| |
| SimpleTextUtil.write(out, ISINDEXED); |
| SimpleTextUtil.write(out, Boolean.toString(fi.isIndexed()), scratch); |
| SimpleTextUtil.writeNewline(out); |
| |
| if (fi.isIndexed()) { |
| assert fi.getIndexOptions().compareTo(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS) >= 0 || !fi.hasPayloads(); |
| SimpleTextUtil.write(out, INDEXOPTIONS); |
| SimpleTextUtil.write(out, fi.getIndexOptions().toString(), scratch); |
| SimpleTextUtil.writeNewline(out); |
| } |
| |
| SimpleTextUtil.write(out, STORETV); |
| SimpleTextUtil.write(out, Boolean.toString(fi.hasVectors()), scratch); |
| SimpleTextUtil.writeNewline(out); |
| |
| SimpleTextUtil.write(out, PAYLOADS); |
| SimpleTextUtil.write(out, Boolean.toString(fi.hasPayloads()), scratch); |
| SimpleTextUtil.writeNewline(out); |
| |
| SimpleTextUtil.write(out, NORMS); |
| SimpleTextUtil.write(out, Boolean.toString(!fi.omitsNorms()), scratch); |
| SimpleTextUtil.writeNewline(out); |
| |
| SimpleTextUtil.write(out, NORMS_TYPE); |
| SimpleTextUtil.write(out, getDocValuesType(fi.getNormType()), scratch); |
| SimpleTextUtil.writeNewline(out); |
| |
| SimpleTextUtil.write(out, DOCVALUES); |
| SimpleTextUtil.write(out, getDocValuesType(fi.getDocValuesType()), scratch); |
| SimpleTextUtil.writeNewline(out); |
| |
| SimpleTextUtil.write(out, DOCVALUES_GEN); |
| SimpleTextUtil.write(out, Long.toString(fi.getDocValuesGen()), scratch); |
| SimpleTextUtil.writeNewline(out); |
| |
| Map<String,String> atts = fi.attributes(); |
| int numAtts = atts == null ? 0 : atts.size(); |
| SimpleTextUtil.write(out, NUM_ATTS); |
| SimpleTextUtil.write(out, Integer.toString(numAtts), scratch); |
| SimpleTextUtil.writeNewline(out); |
| |
| if (numAtts > 0) { |
| for (Map.Entry<String,String> entry : atts.entrySet()) { |
| SimpleTextUtil.write(out, ATT_KEY); |
| SimpleTextUtil.write(out, entry.getKey(), scratch); |
| SimpleTextUtil.writeNewline(out); |
| |
| SimpleTextUtil.write(out, ATT_VALUE); |
| SimpleTextUtil.write(out, entry.getValue(), scratch); |
| SimpleTextUtil.writeNewline(out); |
| } |
| } |
| } |
| SimpleTextUtil.writeChecksum(out, scratch); |
| success = true; |
| } finally { |
| if (success) { |
| out.close(); |
| } else { |
| IOUtils.closeWhileHandlingException(out); |
| } |
| } |
| } |
| |
| private static String getDocValuesType(DocValuesType type) { |
| return type == null ? "false" : type.toString(); |
| } |
| } |