2009/05/20 - Apache Shale has been retired.

For more information, please explore the Attic.


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  
18  /*
19   * $Id: SelectBuilderRule.java 464373 2006-10-16 04:21:54Z rahul $
20   */
21  package org.apache.shale.clay.parser.builder.chain;
22  
23  import org.apache.commons.chain.Command;
24  import org.apache.commons.chain.Context;
25  import org.apache.shale.clay.parser.Node;
26  import org.apache.shale.clay.parser.builder.Builder;
27  import org.apache.shale.clay.parser.builder.SelectManyMenuBuilder;
28  import org.apache.shale.clay.parser.builder.SelectOneMenuBuilder;
29  
30  /***
31   * <p>
32   * This rule will map a html select {@link Node} to a
33   * {@link org.apache.shale.clay.parser.builder.SelectOneMenuBuilder}
34   * or a {@link org.apache.shale.clay.parser.builder.SelectManyMenuBuilder}.
35   * </p>
36   */
37  public class SelectBuilderRule implements Command {
38  
39      /***
40       * <p>
41       * An array of target {@link org.apache.shale.clay.parser.builder.Builder}s.
42       * </p>
43       */
44      private static final Builder[] BUILDERS = { new SelectOneMenuBuilder(),
45              new SelectManyMenuBuilder() };
46  
47      /***
48       * <p>Returns <code>true</code> if a match was made from a select
49       * {@link Node} to a {@link org.apache.shale.clay.parser.builder.SelectOneMenuBuilder}
50       * or a {@link org.apache.shale.clay.parser.builder.SelectManyMenuBuilder}.
51       * <p>
52       *
53       * @param context commons chains
54       * @return <code>true</code> if the chain is done
55       * @exception Exception pass back up the calling chain
56       */
57      public boolean execute(Context context) throws Exception {
58          boolean isFinal = false;
59  
60          BuilderRuleContext builderRuleContext = (BuilderRuleContext) context;
61          Node node = builderRuleContext.getNode();
62          if (!node.isComment() && node.getName() != null
63              && node.getName().equalsIgnoreCase("select")) {
64  
65              if (!node.getAttributes().containsKey("multiple")) {
66                  builderRuleContext.setBuilder(BUILDERS[0]);
67                  isFinal = true;
68              } else {
69                  builderRuleContext.setBuilder(BUILDERS[1]);
70                  isFinal = true;
71              }
72  
73          }
74  
75          return isFinal;
76      }
77  
78  }