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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with 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,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.myfaces.commons.converter;
20  
21  import com.sun.facelets.FaceletContext;
22  import com.sun.facelets.el.LegacyValueBinding;
23  import com.sun.facelets.tag.MetaRule;
24  import com.sun.facelets.tag.Metadata;
25  import com.sun.facelets.tag.MetadataTarget;
26  import com.sun.facelets.tag.TagAttribute;
27  
28  final class _DateTimeConverterRule extends MetaRule {
29  
30      final static class ValueBindingMetadata extends Metadata {
31  
32          private final String name;
33  
34          private final TagAttribute attr;
35  
36          private final Class type;
37  
38          public ValueBindingMetadata(String name, Class type, TagAttribute attr) {
39              this.name = name;
40              this.attr = attr;
41              this.type = type;
42          }
43  
44          public void applyMetadata(FaceletContext ctx, Object instance) {
45              ((DateTimeConverter) instance).setValueBinding(this.name,
46                      new LegacyValueBinding(this.attr.getValueExpression(ctx,
47                              this.type)));
48          }
49  
50      }
51  
52      public final static _DateTimeConverterRule Instance = new _DateTimeConverterRule();
53  
54      public _DateTimeConverterRule() {
55          super();
56      }
57  
58      public Metadata applyRule(String name, TagAttribute attribute,
59              MetadataTarget meta) {
60          if (meta.isTargetInstanceOf(DateTimeConverter.class)) {
61  
62              // if component and dynamic, then must set expression
63              if (!attribute.isLiteral()) {
64                  Class type = meta.getPropertyType(name);
65                  if (type == null) {
66                      type = Object.class;
67                  }
68                  return new ValueBindingMetadata(name, type, attribute);
69              }
70          }
71          return null;
72      }
73  }