forked from apache/lucenenet
/
FilterCodec.cs
107 lines (97 loc) · 3.62 KB
/
FilterCodec.cs
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namespace Lucene.Net.Codecs
{
/*
* 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.
*/
/// <summary>
/// A codec that forwards all its method calls to another codec.
/// <para/>
/// Extend this class when you need to reuse the functionality of an existing
/// codec. For example, if you want to build a codec that redefines Lucene46's
/// <see cref="Codecs.LiveDocsFormat"/>:
/// <code>
/// public sealed class CustomCodec : FilterCodec
/// {
/// public CustomCodec()
/// : base("CustomCodec", new Lucene46Codec())
/// {
/// }
///
/// public override LiveDocsFormat LiveDocsFormat
/// {
/// get { return new CustomLiveDocsFormat(); }
/// }
/// }
/// </code>
///
/// <para/>
/// <em>Please note:</em> Don't call <see cref="Codec.ForName(string)"/> from
/// the no-arg constructor of your own codec. When the <see cref="DefaultCodecFactory"/>
/// loads your own <see cref="Codec"/>, the <see cref="DefaultCodecFactory"/> has not yet fully initialized!
/// If you want to extend another <see cref="Codec"/>, instantiate it directly by calling
/// its constructor.
/// <para/>
/// @lucene.experimental
/// </summary>
public abstract class FilterCodec : Codec
{
/// <summary>
/// The codec to filter. </summary>
protected readonly Codec m_delegate;
/// <summary>
/// Sole constructor. When subclassing this codec,
/// create a no-arg ctor and pass the delegate codec
/// and a unique name to this ctor.
/// </summary>
protected internal FilterCodec(Codec @delegate)
: base()
{
this.m_delegate = @delegate;
}
public override DocValuesFormat DocValuesFormat
{
get { return m_delegate.DocValuesFormat; }
}
public override FieldInfosFormat FieldInfosFormat
{
get { return m_delegate.FieldInfosFormat; }
}
public override LiveDocsFormat LiveDocsFormat
{
get { return m_delegate.LiveDocsFormat; }
}
public override NormsFormat NormsFormat
{
get { return m_delegate.NormsFormat; }
}
public override PostingsFormat PostingsFormat
{
get { return m_delegate.PostingsFormat; }
}
public override SegmentInfoFormat SegmentInfoFormat
{
get { return m_delegate.SegmentInfoFormat; }
}
public override StoredFieldsFormat StoredFieldsFormat
{
get { return m_delegate.StoredFieldsFormat; }
}
public override TermVectorsFormat TermVectorsFormat
{
get { return m_delegate.TermVectorsFormat; }
}
}
}