| package org.apache.lucene.index; |
| |
| /* |
| * 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.Codec; |
| import org.apache.lucene.codecs.StoredFieldsWriter; |
| import org.apache.lucene.store.IOContext; |
| import org.apache.lucene.util.ArrayUtil; |
| import org.apache.lucene.util.RamUsageEstimator; |
| |
| /** This is a StoredFieldsConsumer that writes stored fields. */ |
| final class StoredFieldsProcessor extends StoredFieldsConsumer { |
| |
| StoredFieldsWriter fieldsWriter; |
| final DocumentsWriterPerThread docWriter; |
| int lastDocID; |
| |
| int freeCount; |
| |
| final DocumentsWriterPerThread.DocState docState; |
| final Codec codec; |
| |
| public StoredFieldsProcessor(DocumentsWriterPerThread docWriter) { |
| this.docWriter = docWriter; |
| this.docState = docWriter.docState; |
| this.codec = docWriter.codec; |
| } |
| |
| private int numStoredFields; |
| private StorableField[] storedFields; |
| private FieldInfo[] fieldInfos; |
| |
| public void reset() { |
| numStoredFields = 0; |
| storedFields = new StorableField[1]; |
| fieldInfos = new FieldInfo[1]; |
| } |
| |
| @Override |
| public void startDocument() { |
| reset(); |
| } |
| |
| @Override |
| public void flush(SegmentWriteState state) throws IOException { |
| int numDocs = state.segmentInfo.getDocCount(); |
| |
| if (numDocs > 0) { |
| // It's possible that all documents seen in this segment |
| // hit non-aborting exceptions, in which case we will |
| // not have yet init'd the FieldsWriter: |
| initFieldsWriter(state.context); |
| fill(numDocs); |
| } |
| |
| if (fieldsWriter != null) { |
| try { |
| fieldsWriter.finish(state.fieldInfos, numDocs); |
| } finally { |
| fieldsWriter.close(); |
| fieldsWriter = null; |
| lastDocID = 0; |
| } |
| } |
| } |
| |
| private synchronized void initFieldsWriter(IOContext context) throws IOException { |
| if (fieldsWriter == null) { |
| fieldsWriter = codec.storedFieldsFormat().fieldsWriter(docWriter.directory, docWriter.getSegmentInfo(), context); |
| lastDocID = 0; |
| } |
| } |
| |
| int allocCount; |
| |
| @Override |
| void abort() { |
| reset(); |
| |
| if (fieldsWriter != null) { |
| fieldsWriter.abort(); |
| fieldsWriter = null; |
| lastDocID = 0; |
| } |
| } |
| |
| /** Fills in any hole in the docIDs */ |
| void fill(int docID) throws IOException { |
| // We must "catch up" for all docs before us |
| // that had no stored fields: |
| while(lastDocID < docID) { |
| fieldsWriter.startDocument(0); |
| lastDocID++; |
| fieldsWriter.finishDocument(); |
| } |
| } |
| |
| @Override |
| void finishDocument() throws IOException { |
| assert docWriter.writer.testPoint("StoredFieldsWriter.finishDocument start"); |
| |
| initFieldsWriter(IOContext.DEFAULT); |
| fill(docState.docID); |
| |
| if (fieldsWriter != null && numStoredFields > 0) { |
| fieldsWriter.startDocument(numStoredFields); |
| for (int i = 0; i < numStoredFields; i++) { |
| fieldsWriter.writeField(fieldInfos[i], storedFields[i]); |
| } |
| fieldsWriter.finishDocument(); |
| lastDocID++; |
| } |
| |
| reset(); |
| assert docWriter.writer.testPoint("StoredFieldsWriter.finishDocument end"); |
| } |
| |
| @Override |
| public void addField(int docID, StorableField field, FieldInfo fieldInfo) { |
| if (field.fieldType().stored()) { |
| if (numStoredFields == storedFields.length) { |
| int newSize = ArrayUtil.oversize(numStoredFields + 1, RamUsageEstimator.NUM_BYTES_OBJECT_REF); |
| StorableField[] newArray = new StorableField[newSize]; |
| System.arraycopy(storedFields, 0, newArray, 0, numStoredFields); |
| storedFields = newArray; |
| |
| FieldInfo[] newInfoArray = new FieldInfo[newSize]; |
| System.arraycopy(fieldInfos, 0, newInfoArray, 0, numStoredFields); |
| fieldInfos = newInfoArray; |
| } |
| |
| storedFields[numStoredFields] = field; |
| fieldInfos[numStoredFields] = fieldInfo; |
| numStoredFields++; |
| |
| assert docState.testPoint("StoredFieldsWriterPerThread.processFields.writeField"); |
| } |
| } |
| } |