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Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
BeanProviderPropertyAccessor.java | 25% | 40% | 50% | 37.5% |
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1 | // Copyright 2004, 2005 The Apache Software Foundation | |
2 | // | |
3 | // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | // you may not use this file except in compliance with the License. | |
5 | // You may obtain a copy of the License at | |
6 | // | |
7 | // http://www.apache.org/licenses/LICENSE-2.0 | |
8 | // | |
9 | // Unless required by applicable law or agreed to in writing, software | |
10 | // distributed under the License is distributed on an "AS IS" BASIS, | |
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | // See the License for the specific language governing permissions and | |
13 | // limitations under the License. | |
14 | ||
15 | package org.apache.tapestry.bean; | |
16 | ||
17 | import java.util.Map; | |
18 | ||
19 | import ognl.ObjectPropertyAccessor; | |
20 | import ognl.OgnlException; | |
21 | ||
22 | import org.apache.tapestry.IBeanProvider; | |
23 | ||
24 | /** | |
25 | * Adapts a {@link org.apache.tapestry.IBeanProvider} to | |
26 | * <a href="http://www.ognl.org">OGNL</a> by exposing the named | |
27 | * beans provided by the provider as read-only properties of | |
28 | * the provider. | |
29 | * | |
30 | * <p>This is registered by {@link org.apache.tapestry.AbstractComponent}. | |
31 | * | |
32 | * @author Howard Lewis Ship | |
33 | * @since 2.2 | |
34 | * | |
35 | **/ | |
36 | ||
37 | public class BeanProviderPropertyAccessor extends ObjectPropertyAccessor | |
38 | { | |
39 | /** | |
40 | * Checks to see if the name matches the name of a bean inside | |
41 | * the provider and returns that bean if so. | |
42 | * Otherwise, invokes the super implementation. | |
43 | * | |
44 | **/ | |
45 | ||
46 | 36 | public Object getProperty(Map context, Object target, Object name) throws OgnlException |
47 | { | |
48 | 36 | IBeanProvider provider = (IBeanProvider)target; |
49 | 36 | String beanName = (String)name; |
50 | ||
51 | 36 | if (provider.canProvideBean(beanName)) |
52 | 36 | return provider.getBean(beanName); |
53 | ||
54 | 0 | return super.getProperty(context, target, name); |
55 | } | |
56 | ||
57 | /** | |
58 | * Returns true if the name matches a bean provided by the provider. | |
59 | * Otherwise invokes the super implementation. | |
60 | * | |
61 | **/ | |
62 | ||
63 | 0 | public boolean hasGetProperty(Map context, Object target, Object oname) throws OgnlException |
64 | { | |
65 | 0 | IBeanProvider provider = (IBeanProvider)target; |
66 | 0 | String beanName = (String)oname; |
67 | ||
68 | 0 | if (provider.canProvideBean(beanName)) |
69 | 0 | return true; |
70 | ||
71 | 0 | return super.hasGetProperty(context, target, oname); |
72 | } | |
73 | ||
74 | } |
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