KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > tapestry > pageload > NamespaceClassSearchComponentClassProvider


1 // Copyright 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.pageload;
16
17 import java.util.ArrayList JavaDoc;
18 import java.util.Iterator JavaDoc;
19 import java.util.List JavaDoc;
20 import java.util.StringTokenizer JavaDoc;
21
22 import org.apache.hivemind.ClassResolver;
23 import org.apache.tapestry.INamespace;
24 import org.apache.tapestry.services.ClassFinder;
25
26 /**
27  * Searches for a class with a name matching the page name. Searches in the default Java package,
28  * and possibly additional packages defined as meta-data within the namespace.
29  *
30  * @author Howard M. Lewis Ship
31  * @since 4.0
32  */
33 public class NamespaceClassSearchComponentClassProvider implements ComponentClassProvider
34 {
35     /**
36      * Property, defined as meta data of the containing namespace, that defines a comma-seperated
37      * list of packages to search for page or component classes within.
38      */
39     private String JavaDoc _packagesName;
40
41     private ClassFinder _classFinder;
42
43     public String JavaDoc provideComponentClassName(ComponentClassProviderContext context)
44     {
45         INamespace namespace = context.getNamespace();
46         String JavaDoc packages = namespace.getPropertyValue(_packagesName);
47
48         String JavaDoc componentClassName = context.getName().replace('/', '.');
49
50         Class JavaDoc clazz = _classFinder.findClass(packages, componentClassName);
51
52         return clazz == null ? null : clazz.getName();
53     }
54
55     public void setPackagesName(String JavaDoc packagesName)
56     {
57         _packagesName = packagesName;
58     }
59
60     public void setClassFinder(ClassFinder classFinder)
61     {
62         _classFinder = classFinder;
63     }
64 }
Popular Tags