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LengthFilterFactory.cs
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LengthFilterFactory.cs
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using Lucene.Net.Analysis.Util;
using System.Collections.Generic;
namespace Lucene.Net.Analysis.Miscellaneous
{
/*
* 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>
/// Factory for <see cref="LengthFilter"/>.
/// <code>
/// <fieldType name="text_lngth" class="solr.TextField" positionIncrementGap="100">
/// <analyzer>
/// <tokenizer class="solr.WhitespaceTokenizerFactory"/>
/// <filter class="solr.LengthFilterFactory" min="0" max="1" />
/// </analyzer>
/// </fieldType></code>
/// </summary>
public class LengthFilterFactory : TokenFilterFactory
{
private readonly int min;
private readonly int max;
private readonly bool enablePositionIncrements;
public const string MIN_KEY = "min";
public const string MAX_KEY = "max";
/// <summary>
/// Creates a new <see cref="LengthFilterFactory"/> </summary>
public LengthFilterFactory(IDictionary<string, string> args)
: base(args)
{
min = RequireInt32(args, MIN_KEY);
max = RequireInt32(args, MAX_KEY);
enablePositionIncrements = GetBoolean(args, "enablePositionIncrements", true);
if (args.Count > 0)
{
throw new System.ArgumentException("Unknown parameters: " + args);
}
}
public override TokenStream Create(TokenStream input)
{
#pragma warning disable 612, 618
var filter = new LengthFilter(m_luceneMatchVersion, enablePositionIncrements, input, min, max);
#pragma warning restore 612, 618
return filter;
}
}
}