AbstractQueryFilter


1   /**
2    *
3    * Licensed to the Apache Software Foundation (ASF) under one or more
4    * contributor license agreements.  See the NOTICE file distributed with
5    * this work for additional information regarding copyright ownership.
6    * The ASF licenses this file to You under the Apache License, Version 2.0
7    * (the "License"); you may not use this file except in compliance with
8    * the License.  You may obtain a copy of the License at
9    *
10   * http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.apache.activemq.console.filter;
19  
20  import java.util.List  ;
21  import java.util.StringTokenizer  ;
22  import java.util.Collections  ;
23  
24  public abstract class AbstractQueryFilter implements QueryFilter {
25      protected QueryFilter next;
26  
27      /**
28       * Creates a query filter, with the next filter specified by next.
29       * @param next - the next query filter
30       */
31      protected AbstractQueryFilter(QueryFilter next) {
32          this.next = next;
33      }
34  
35      /**
36       * Performs a query given the query string
37       * @param query - query string
38       * @return objects that matches the query
39       * @throws Exception
40       */
41      public List   query(String   query) throws Exception   {
42          // Converts string query to map query
43          StringTokenizer   tokens = new StringTokenizer  (query, QUERY_DELIMETER);
44          return query(Collections.list(tokens));
45      }
46  }
47

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