blob: 897c5e06c06a19bf265307fc7fa78d4592a89280 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.tuscany.common.resource;
import java.io.IOException;
import java.net.URL;
import java.util.Iterator;
import java.util.List;
/**
* Interface which abstracts the implementation of something that is able to
* load resources (such as a ClassLoader). All Tuscany code should use this
* API rather than a ClassLoader directly in order to reduce the risk of
* memory leaks due to ClassLoader references.
*
* @version $Rev: 379878 $ $Date: 2006-02-22 12:45:50 -0800 (Wed, 22 Feb 2006) $
*/
public interface ResourceLoader {
/**
* Returns the parent resource loaders.
*
* @return resource loaders that are parents to this one
*/
List<ResourceLoader> getParents();
/**
* Loads the class with the specified binary name.
*
* @param name the binary name of the class
* @return the resulting Class object
* @throws ClassNotFoundException if the class was not found
* @see ClassLoader#loadClass(String)
*/
Class<?> loadClass(String name) throws ClassNotFoundException;
/**
* Converts an array of bytes into a Class.
*
* @param bytes the bytecode for the class; must match the class file format
* @return a Class defined from the supplied bytecode
*/
Class<?> addClass(byte[] bytes);
/**
* Finds the first resource with the given name.
* <p/>
* Each parent is searched first (in the order returned by {@link #getParents()})
* and the first resource located is found. If no parent returns a resource then
* the first resource defined by this ResourceLoader is returned.
*
* @param name the resource name
* @return a {@link URL} that can be used to read the resource, or null if no resource could be found
*/
URL getResource(String name);
/**
* Find resources with the given name that are available from this
* ResourceLoader or any of its parents.
*
* @param name the resource name
* @return an Iterator of {@link URL} objects for the resource
* @throws IOException if there was a problem locating the resources
*/
Iterator<URL> getResources(String name) throws IOException;
//FIXME this is temporary to work around classloader problems with SDO when running in Tomcat
/**
* Returns the underlying classloader this loader is wrapping.
*
* @return the underlying classloader this loader is wrapping
*/
ClassLoader getClassLoader();
}
|
