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* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.index.codec.postingsformat;
import org.apache.lucene.codecs.PostingsFormat;
import org.apache.lucene.codecs.blocktree.BlockTreeTermsWriter;
import org.apache.lucene.codecs.lucene50.Lucene50PostingsFormat;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.inject.assistedinject.Assisted;
import org.elasticsearch.common.settings.Settings;
/**
* The default postingsformat, maps to {@link Lucene50PostingsFormat}.
* <ul>
* <li><tt>min_block_size</tt>: the minimum block size the default Lucene term
* dictionary uses to encode on-disk blocks.</li>
*
* <li><tt>max_block_size</tt>: the maximum block size the default Lucene term
* dictionary uses to encode on-disk blocks.</li>
* </ul>
*/
// LUCENE UPGRADE: Check if type of field postingsFormat needs to be updated!
public class DefaultPostingsFormatProvider extends AbstractPostingsFormatProvider {
private final int minBlockSize;
private final int maxBlockSize;
private final Lucene50PostingsFormat postingsFormat;
@Inject
public DefaultPostingsFormatProvider(@Assisted String name, @Assisted Settings postingsFormatSettings) {
super(name);
this.minBlockSize = postingsFormatSettings.getAsInt("min_block_size", BlockTreeTermsWriter.DEFAULT_MIN_BLOCK_SIZE);
this.maxBlockSize = postingsFormatSettings.getAsInt("max_block_size", BlockTreeTermsWriter.DEFAULT_MAX_BLOCK_SIZE);
this.postingsFormat = new Lucene50PostingsFormat(minBlockSize, maxBlockSize);
}
public int minBlockSize() {
return minBlockSize;
}
public int maxBlockSize() {
return maxBlockSize;
}
@Override
public PostingsFormat get() {
return postingsFormat;
}
}