/*
* 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.
*/
using System;
using IndexReader = Lucene.Net.Index.IndexReader;
using DocIdBitSet = Lucene.Net.Util.DocIdBitSet;
namespace Lucene.Net.Search
{
///
/// Abstract base class providing a mechanism to limit index search results
/// to a subset of an index.
///
/// Note: In Lucene 3.0, Bits(IndexReader) will be removed and GetDocIdSet(IndexReader)
/// will be made abstract. All implementin classes must therefore implement
/// GetDocIdSet(IndexReader) in order to work with Lucene 3.0.
///
///
[Serializable]
public abstract class Filter
{
///
/// Returns a BitSet with true for documents which should be permitted in
/// search results, and false for those that should not.
///
[System.Obsolete("Use GetDocIdSet(IndexReader) instead.")]
public abstract System.Collections.BitArray Bits(IndexReader reader);
///
/// Return a DocIdSet that provides the documents which are permitted
/// or prohibited in search results.
///
///
///
///
public virtual DocIdSet GetDocIdSet(IndexReader reader)
{
return new DocIdBitSet(Bits(reader));
}
}
}