Coverage report

| %line | %branch
--- | --- | ---
org.apache.commons.jelly.util.ClassLoaderUtils |
27% |
62% |

1 |  |
     /*
2 |  |
      * Copyright 2002,2004 The Apache Software Foundation.
3 |  |
      *
4 |  |
      * Licensed under the Apache License, Version 2.0 (the "License");
5 |  |
      * you may not use this file except in compliance with the License.
6 |  |
      * You may obtain a copy of the License at
7 |  |
      *
8 |  |
      *      http://www.apache.org/licenses/LICENSE-2.0
9 |  |
      *
10 |  |
      * Unless required by applicable law or agreed to in writing, software
11 |  |
      * distributed under the License is distributed on an "AS IS" BASIS,
12 |  |
      * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 |  |
      * See the License for the specific language governing permissions and
14 |  |
      * limitations under the License.
15 |  |
      */
16 |  |
17 |  |
     package org.apache.commons.jelly.util;
18 |  |
19 |  |
     import org.apache.commons.logging.Log;
20 |  |
     import org.apache.commons.logging.LogFactory;
21 |  |
22 |  |
     /**
23 |  |
      * A class to centralize the class loader management code.
24 |  |
      */
25 | 0 |
     public class ClassLoaderUtils {
26 |  |
27 |  |
         /** log for debug etc output */
28 | 572 |
         private static final Log log = LogFactory.getLog(ClassLoaderUtils.class);
29 |  |
30 |  |
         /**
31 |  |
          * Return the class loader to be used for instantiating application objects
32 |  |
          * when required.  This is determined based upon the following rules:
33 |  |
          * <ul>
34 |  |
          * <li>The specified class loader, if any</li>
35 |  |
          * <li>The thread context class loader, if it exists and <code>useContextClassLoader</code> is true</li>
36 |  |
          * <li>The class loader used to load the calling class.
37 |  |
          * <li>The System class loader.
38 |  |
          * </ul>
39 |  |
          */
40 |  |
         public static ClassLoader getClassLoader(ClassLoader specifiedLoader, boolean useContextClassLoader, Class callingClass) {
41 | 1781 |
             if (specclass="keyword">ifiedLoader != null) {
42 | 0 |
                 return specifiedLoader;
43 |  |
             }
44 | 1781 |
             if (useContextClassLoader) {
45 | 0 |
                 ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
46 | 0 |
                 if (classLoader != null) {
47 | 0 |
                     return classLoader;
48 |  |
                 }
49 |  |
             }
50 | 1781 |
             return getClassLoader(callingClass);
51 |  |
         }
52 |  |
53 |  |
         /**
54 |  |
          * Return the class loader to be used for instantiating application objects
55 |  |
          * when a context class loader is not specified.  This is determined based upon the following rules:
56 |  |
          * <ul>
57 |  |
          * <li>The specified class loader, if any</li>
58 |  |
          * <li>The class loader used to load the calling class.
59 |  |
          * <li>The System class loader.
60 |  |
          * </ul>
61 |  |
          */
62 |  |
         public static ClassLoader getClassLoader(ClassLoader specifiedLoader, Class callingClass) {
63 | 0 |
             if (specclass="keyword">ifiedLoader != null) {
64 | 0 |
                 return specifiedLoader;
65 |  |
             }
66 | 0 |
             return getClassLoader(callingClass);
67 |  |
         }
68 |  |
69 |  |
         /**
70 |  |
          * Get the loader for the given class.
71 |  |
          * @param clazz the class to retrieve the loader for
72 |  |
          * @return the class loader that loaded the provided class
73 |  |
          */
74 |  |
         public static ClassLoader getClassLoader(Class clazz) {
75 | 2639 |
             ClassLoader callersLoader = clazz.getClassLoader();
76 | 2639 |
             if (callersLoader == null) {
77 | 0 |
                 callersLoader = ClassLoader.getSystemClassLoader();
78 |  |
             }
79 | 2639 |
             return callersLoader;
80 |  |
         }
81 |  |
82 |  |
         /**
83 |  |
          * Loads the given class using the current Thread's context class loader first
84 |  |
          * otherwise use the class loader which loaded this class.
85 |  |
          */
86 |  |
         public static Class loadClass(String className, Class callingClass) throws ClassNotFoundException {
87 | 156 |
             ClassLoader loader = Thread.currentThread().getContextClassLoader();
88 | 156 |
             if (loader == null) {
89 | 0 |
                 return getClassLoader(callingClass).loadClass(className);
90 |  |
             } else {
91 | 156 |
                 return loader.loadClass(className);
92 |  |
             }
93 |  |
         }
94 |  |
95 |  |
         /**
96 |  |
          * Loads the given class using:
97 |  |
          * <ol>
98 |  |
          * <li>the specified classloader,</li>
99 |  |
          * <li>the current Thread's context class loader first, if asked</li>
100 |  |
          * <li>otherwise use the class loader which loaded this class.</li>
101 |  |
          * </ol>
102 |  |
          */
103 |  |
         public static Class loadClass(String className, ClassLoader specifiedLoader, boolean useContextLoader, Class callingClass) throws ClassNotFoundException {
104 | 0 |
             Class clazz = null;
105 | 0 |
             if (specclass="keyword">ifiedLoader != null) {
106 |  |
                 try {
107 | 0 |
                     clazz = specifiedLoader.loadClass(className);
108 | 0 |
                 } catch (ClassNotFoundException e) {
109 | 0 |
                     log.debug("couldn't find class in specified loader", e);
110 | 0 |
                 }
111 |  |
             }
112 | 0 |
             if (clazz == null && useContextLoader) {
113 | 0 |
                 ClassLoader contextLoader = Thread.currentThread().getContextClassLoader();
114 | 0 |
                 if (contextLoader != null) {
115 |  |
                     try {
116 | 0 |
                         clazz = contextLoader.loadClass(className);
117 | 0 |
                     } catch (ClassNotFoundException e) {
118 | 0 |
                         log.debug("couldn't find class in specified loader", e);
119 | 0 |
                     }
120 |  |
                 }
121 |  |
             }
122 | 0 |
             if (clazz == null) {
123 | 0 |
                 ClassLoader loader = getClassLoader(callingClass);
124 | 0 |
                 clazz = loader.loadClass(className);
125 |  |
             }
126 | 0 |
             return clazz;
127 |  |
         }
128 |  |
     }

This report is generated by jcoverage, Maven and Maven JCoverage Plugin.