org.hibernate.search.filter
Class FilterOptimizationHelper

java.lang.Object
  org.hibernate.search.filter.FilterOptimizationHelper

public class FilterOptimizationHelper
extends java.lang.Object

Helper class to apply some common optimizations when several Filters are applied.

Author:

Sanne Grinovero

Constructor Summary

FilterOptimizationHelper()

Method Summary

static java.util.List<org.apache.lucene.search.DocIdSet>

mergeByBitAnds(java.util.List<org.apache.lucene.search.DocIdSet> docIdSets) Returns a new list of DocIdSet, applying binary AND on all DocIdSet implemented by using BitSet or OpenBitSet.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FilterOptimizationHelper

public FilterOptimizationHelper()

Method Detail

mergeByBitAnds

public static java.util.List<org.apache.lucene.search.DocIdSet> mergeByBitAnds(java.util.List<org.apache.lucene.search.DocIdSet> docIdSets)

Returns a new list of DocIdSet, applying binary AND on all DocIdSet implemented by using BitSet or OpenBitSet.

Parameters:

docIdSets -

Returns:

the same list if no changes were done