DefaultLuceneCallback


1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.servicemix.jbi.audit.lucene;
18  
19  import java.io.IOException  ;
20  
21  import org.apache.lucene.analysis.standard.StandardAnalyzer;
22  import org.apache.lucene.document.Document;
23  import org.apache.lucene.queryParser.ParseException;
24  import org.apache.lucene.queryParser.QueryParser;
25  import org.apache.lucene.search.Hits;
26  import org.apache.lucene.search.IndexSearcher;
27  import org.apache.lucene.search.Query;
28  
29  /**
30   * Default Lucene Callback implementation. Used on LuceneAuditor
31   * @author George Gastaldi (gastaldi)
32   * @since 2.1
33   * @version $Revision: 426415 $
34   */
35  public class DefaultLuceneCallback implements LuceneCallback {
36      private String   field;
37      private String   query;
38      
39      public DefaultLuceneCallback(String   field, String   query) {
40          this.field = field;
41          this.query = query;
42      }
43      
44      public Object   doCallback(IndexSearcher is) throws IOException   {
45          try {
46              Query queryObj = QueryParser.parse(query, field, new StandardAnalyzer());
47              Hits hits = is.search(queryObj);
48              int total = hits.length();
49              String  [] ids = new String  [total];
50              for (int i = 0; i < total; i++) {
51                  Document d = hits.doc(i);
52                  ids[i] = d.get("org.apache.servicemix.exchangeid");
53              }
54              return ids;
55          } catch (ParseException pe) {
56              return new String  [0];
57          }
58      }
59  
60  }
61
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