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: SpanBuilderRule.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.MorphBuilder;
28  
29  /***
30   * <p>
31   * This <code>Command</code> rule matches a html span {@link Node} to a
32   * {@link MorphBuilder}. This rule is different in that <code>jsfid</code> is
33   * used to find the target componentType to replace the html span tag. If a
34   * <code>jsfid</code> is not found as an attribute in the html {@link Node},
35   * no match is made.
36   * <p>
37   */
38  public class SpanBuilderRule implements Command {
39  
40      /***
41       * <p>
42       * Instance of the {@link MorphBuilder} that can become any type of
43       * component.
44       * </p>
45       */
46      private static final Builder BUILDER = new MorphBuilder();
47  
48      /***
49       * <p>
50       * Returns a <code>true</code> value, ending the chain execution if the
51       * html {@link Node} has a <code>jsfid</code> html attribute and is a span
52       * HTML element.
53       * </p>
54       *
55       * @param context commons chains
56       * @return <code>true</code> if final
57       * @exception Exception propagated to the top chain
58       */
59      public boolean execute(Context context) throws Exception {
60          boolean isFinal = false;
61  
62          BuilderRuleContext builderRuleContext = (BuilderRuleContext) context;
63          Node node = builderRuleContext.getNode();
64          if (!node.isComment() && node.getName() != null
65              && node.getName().equals("span")
66              && node.getAttributes().containsKey("jsfid")) {
67  
68              builderRuleContext.setBuilder(BUILDER);
69              isFinal = true;
70          }
71  
72          return isFinal;
73      }
74  
75  }