| /* |
| * 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.index; |
| |
| import java.io.IOException; |
| |
| import org.apache.lucene.codecs.Codec; |
| import org.apache.lucene.codecs.StoredFieldsWriter; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.IOContext; |
| import org.apache.lucene.util.Accountable; |
| import org.apache.lucene.util.IOUtils; |
| |
| class StoredFieldsConsumer { |
| final Codec codec; |
| final Directory directory; |
| final SegmentInfo info; |
| StoredFieldsWriter writer; |
| // this accountable either holds the writer or one that returns null. |
| // it's cleaner than checking if the writer is null all over the place |
| Accountable accountable = Accountable.NULL_ACCOUNTABLE; |
| private int lastDoc; |
| |
| StoredFieldsConsumer(Codec codec, Directory directory, SegmentInfo info) { |
| this.codec = codec; |
| this.directory = directory; |
| this.info = info; |
| this.lastDoc = -1; |
| } |
| |
| protected void initStoredFieldsWriter() throws IOException { |
| if (writer == null) { // TODO can we allocate this in the ctor? we call start document for every doc anyway |
| this.writer = codec.storedFieldsFormat().fieldsWriter(directory, info, IOContext.DEFAULT); |
| accountable = writer; |
| } |
| } |
| |
| void startDocument(int docID) throws IOException { |
| assert lastDoc < docID; |
| initStoredFieldsWriter(); |
| while (++lastDoc < docID) { |
| writer.startDocument(); |
| writer.finishDocument(); |
| } |
| writer.startDocument(); |
| } |
| |
| void writeField(FieldInfo info, IndexableField field) throws IOException { |
| writer.writeField(info, field); |
| } |
| |
| void finishDocument() throws IOException { |
| writer.finishDocument(); |
| } |
| |
| void finish(int maxDoc) throws IOException { |
| while (lastDoc < maxDoc-1) { |
| startDocument(lastDoc); |
| finishDocument(); |
| ++lastDoc; |
| } |
| } |
| |
| void flush(SegmentWriteState state, Sorter.DocMap sortMap) throws IOException { |
| try { |
| writer.finish(state.fieldInfos, state.segmentInfo.maxDoc()); |
| } finally { |
| IOUtils.close(writer); |
| } |
| } |
| |
| void abort() { |
| IOUtils.closeWhileHandlingException(writer); |
| } |
| } |