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 java.util.Map;
import org.apache.lucene.codecs.DocValuesConsumer;
import org.apache.lucene.codecs.NormsFormat;
import org.apache.lucene.index.FieldInfo.DocValuesType;
import org.apache.lucene.util.IOUtils;
// TODO FI: norms could actually be stored as doc store
/** Writes norms. Each thread X field accumulates the norms
* for the doc/fields it saw, then the flush method below
* merges all of these together into a single _X.nrm file.
*/
final class NormsConsumer extends InvertedDocEndConsumer {
@Override
void abort() {}
@Override
public void flush(Map<String,InvertedDocEndConsumerPerField> fieldsToFlush, SegmentWriteState state) throws IOException {
boolean success = false;
DocValuesConsumer normsConsumer = null;
try {
if (state.fieldInfos.hasNorms()) {
NormsFormat normsFormat = state.segmentInfo.getCodec().normsFormat();
assert normsFormat != null;
normsConsumer = normsFormat.normsConsumer(state);
for (FieldInfo fi : state.fieldInfos) {
final NormsConsumerPerField toWrite = (NormsConsumerPerField) fieldsToFlush.get(fi.name);
// we must check the final value of omitNorms for the fieldinfo, it could have
// changed for this field since the first time we added it.
if (!fi.omitsNorms()) {
if (toWrite != null && !toWrite.isEmpty()) {
toWrite.flush(state, normsConsumer);
assert fi.getNormType() == DocValuesType.NUMERIC;
} else if (fi.isIndexed()) {
assert fi.getNormType() == null: "got " + fi.getNormType() + "; field=" + fi.name;
}
}
}
}
success = true;
} finally {
if (success) {
IOUtils.close(normsConsumer);
} else {
IOUtils.closeWhileHandlingException(normsConsumer);
}
}
}
@Override
void finishDocument() {}
@Override
void startDocument() {}
@Override
InvertedDocEndConsumerPerField addField(DocInverterPerField docInverterPerField, FieldInfo fieldInfo) {
return new NormsConsumerPerField(docInverterPerField, fieldInfo, this);
}
}