/*
*
* 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 System.Text;
using Lucene.Net.Analysis.Tokenattributes;
using Lucene.Net.Index;
namespace Lucene.Net.Analysis.Payloads
{
///
/// Makes the Token.Type() a payload.
/// Encodes the type using as the encoding
///
public class TypeAsPayloadTokenFilter : TokenFilter
{
private IPayloadAttribute payloadAtt;
private ITypeAttribute typeAtt;
public TypeAsPayloadTokenFilter(TokenStream input)
: base(input)
{
payloadAtt = AddAttribute();
typeAtt = AddAttribute();
}
public sealed override bool IncrementToken()
{
if (input.IncrementToken())
{
String type = typeAtt.Type;
if (type != null && type.Equals("") == false)
{
payloadAtt.Payload = new Payload(Encoding.UTF8.GetBytes(type));
}
return true;
}
else
{
return false;
}
}
}
}