| using Lucene.Net.Analysis.TokenAttributes; |
| using Lucene.Net.Util; |
| using System; |
| |
| namespace Lucene.Net.Analysis.Sinks |
| { |
| /* |
| * 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> |
| /// Adds a token to the sink if it has a specific type. |
| /// </summary> |
| public class TokenTypeSinkFilter : TeeSinkTokenFilter.SinkFilter |
| { |
| private readonly string typeToMatch; |
| private ITypeAttribute typeAtt; |
| |
| public TokenTypeSinkFilter(string typeToMatch) |
| { |
| this.typeToMatch = typeToMatch; |
| } |
| |
| public override bool Accept(AttributeSource source) |
| { |
| if (typeAtt == null) |
| { |
| typeAtt = source.AddAttribute<ITypeAttribute>(); |
| } |
| |
| //check to see if this is a Category |
| return (typeToMatch.Equals(typeAtt.Type, StringComparison.Ordinal)); |
| } |
| } |
| } |