org.hibernate.search.filter.impl
Class FilterOptimizationHelper

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

public final class FilterOptimizationHelper
extends Object

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

Author:

Sanne Grinovero

Method Summary

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

mergeByBitAnds(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

Method Detail

mergeByBitAnds

public static List<org.apache.lucene.search.DocIdSet> mergeByBitAnds(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 - a List object.

Returns:

the same list if no changes were done