org.elasticsearch.index.codec.postingsformat.DefaultPostingsFormatProvider Maven / Gradle / Ivy
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* the Apache License, Version 2.0 (the "License"); you may
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*
* http://www.apache.org/licenses/LICENSE-2.0
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*/
package org.elasticsearch.index.codec.postingsformat;
import org.apache.lucene.codecs.PostingsFormat;
import org.apache.lucene.codecs.blocktree.BlockTreeTermsWriter;
import org.apache.lucene.codecs.lucene41.Lucene41PostingsFormat;
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 Lucene41PostingsFormat}.
*
* - min_block_size: the minimum block size the default Lucene term
* dictionary uses to encode on-disk blocks.
*
* - max_block_size: the maximum block size the default Lucene term
* dictionary uses to encode on-disk blocks.
*
*/
// 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 Lucene41PostingsFormat 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 Lucene41PostingsFormat(minBlockSize, maxBlockSize);
}
public int minBlockSize() {
return minBlockSize;
}
public int maxBlockSize() {
return maxBlockSize;
}
@Override
public PostingsFormat get() {
return postingsFormat;
}
}