JFox Service-Oriented Application Framework

Clover coverage report - JFox Service-Oriented Application Framework - 1.0

Coverage timestamp: 星期一八月 21 2006 22:56:01 CST

FRAMES NO FRAMES

file stats:	LOC:	324		Methods:	20
	NCLOC:	133		Classes:	1

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Source file

Conditionals

Statements

Methods

TOTAL

ResourceHelper.java

50%

49.2%

45%

48.4%

 /**
  * @(#)ResourceHelper.java
  * 
  * JFoxSOAF, Service-Oriented Application Framework
  * 
  * Copyright(c) JFoxSOAF Team
  * 
  * Licensed under the GNU LGPL, Version 2.1 (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.gnu.org/copyleft/lesser.html
  * 
  * 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. 
  * 
  * For more information, please visit:
  * http://www.jfox.cn/confluence/display/JFoxSOAF/Home
  * http://www.huihoo.org/jfox/jfoxsoaf
  */
 
 package org.huihoo.jfox.soaf.util.resource;
 
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.Reader;
 import java.net.URL;
 import java.net.URLConnection;
 import java.util.Properties;
 
 /**
  * A class to simplify access to resources through the classloader.
  * 
  * @author <a href="mailto:founder_chen@yahoo.com.cn">Peter Cheng </a>
  * @author <a href="mailto:clinton.begin@ibatis.com">Clinton Begin </a>
  * @version $Revision: 1.6 $ $Date: 2005/05/22 06:50:55 $
  * @version Revision: 1.0
  */
 
 public class ResourceHelper {
 
     private static ClassLoader defaultClassLoader;
 
     public ResourceHelper() {
     }
 
     /**
      * Returns the default classloader (may be null).
      * 
      * @return The default classloader
      */
     public static ClassLoader getDefaultClassLoader() {
         return defaultClassLoader;
     }
 
     /**
      * Sets the default classloader
      * 
      * @param defaultClassLoader - the new default ClassLoader
      */
     public static void setDefaultClassLoader(ClassLoader defaultClassLoader) {
         ResourceHelper.defaultClassLoader = defaultClassLoader;
     }
 
     /**
      * Returns the URL of the resource on the classpath
      * 
      * @param resource The resource to find
      * @return The resource
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static URL getResourceURL(String resource) throws IOException {
         return getResourceURL(getClassLoader(), resource);
     }
 
     /**
      * Returns the URL of the resource on the classpath
      * 
      * @param loader The classloader used to load the resource
      * @param resource The resource to find
      * @return The resource
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static URL getResourceURL(ClassLoader loader, String resource)
             throws IOException {
         URL url = null;
         if (loader != null) {
             url = loader.getResource(resource);
         }
         if (url == null) {
             url = ClassLoader.getSystemResource(resource);
         }
 
         if (url == null) {
             throw new IOException("Could not find resource " + resource);
         }
         return url;
     }
 
     /**
      * Returns a resource on the classpath as a Stream object
      * 
      * @param resource The resource to find
      * @return The resource
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static InputStream getResourceAsStream(String resource)
             throws IOException {
         return getResourceAsStream(getClassLoader(), resource);
     }
 
     /**
      * Returns a resource on the classpath as a Stream object
      * 
      * @param loader The classloader used to load the resource
      * @param resource The resource to find
      * @return The resource
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static InputStream getResourceAsStream(ClassLoader loader,
             String resource) throws IOException {
         InputStream in = null;
         if (loader != null) {
             in = loader.getResourceAsStream(resource);
         }
         if (in == null) {
             in = ClassLoader.getSystemResourceAsStream(resource);
         }
         if (in == null) {
             throw new IOException("Could not find resource " + resource);
         }
         return in;
     }
 
     /**
      * Returns a resource on the classpath as a Properties object
      * 
      * @param resource The resource to find
      * @return The resource
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static Properties getResourceAsProperties(String resource)
             throws IOException {
         Properties props = new Properties();
         InputStream in = null;
         String propfile = resource;
         in = getResourceAsStream(propfile);
         props.load(in);
         in.close();
         return props;
     }
 
     /**
      * Returns a resource on the classpath as a Properties object
      * 
      * @param loader The classloader used to load the resource
      * @param resource The resource to find
      * @return The resource
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static Properties getResourceAsProperties(ClassLoader loader,
             String resource) throws IOException {
         Properties props = new Properties();
         InputStream in = null;
         String propfile = resource;
         in = getResourceAsStream(loader, propfile);
         props.load(in);
         in.close();
         return props;
     }
 
     /**
      * Returns a resource on the classpath as a Reader object
      * 
      * @param resource The resource to find
      * @return The resource
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static Reader getResourceAsReader(String resource)
             throws IOException {
         return new InputStreamReader(getResourceAsStream(resource));
     }
 
     /**
      * Returns a resource on the classpath as a Reader object
      * 
      * @param loader The classloader used to load the resource
      * @param resource The resource to find
      * @return The resource
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static Reader getResourceAsReader(ClassLoader loader, String resource)
             throws IOException {
         return new InputStreamReader(getResourceAsStream(loader, resource));
     }
 
     /**
      * Returns a resource on the classpath as a File object
      * 
      * @param resource The resource to find
      * @return The resource
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static File getResourceAsFile(String resource) throws IOException {
         return new File(getResourceURL(resource).getFile());
     }
 
     /**
      * Returns a resource on the classpath as a File object
      * 
      * @param loader - the classloader used to load the resource
      * @param resource - the resource to find
      * @return The resource
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static File getResourceAsFile(ClassLoader loader, String resource)
             throws IOException {
         return new File(getResourceURL(loader, resource).getFile());
     }
 
     /**
      * Gets a URL as an input stream
      * 
      * @param urlString - the URL to get
      * @return An input stream with the data from the URL
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static InputStream getUrlAsStream(String urlString)
             throws IOException {
         URL url = new URL(urlString);
         URLConnection conn = url.openConnection();
         return conn.getInputStream();
     }
 
     /**
      * Gets a URL as a Reader
      * 
      * @param urlString - the URL to get
      * @return A Reader with the data from the URL
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static Reader getUrlAsReader(String urlString) throws IOException {
         return new InputStreamReader(getUrlAsStream(urlString));
     }
 
     /**
      * Gets a URL as a Properties object
      * 
      * @param urlString - the URL to get
      * @return A Properties object with the data from the URL
      * @throws java.io.IOException If the resource cannot be found or read
      */
     public static Properties getUrlAsProperties(String urlString)
             throws IOException {
         Properties props = new Properties();
         InputStream in = null;
         String propfile = urlString;
         in = getUrlAsStream(propfile);
         props.load(in);
         in.close();
         return props;
     }
 
     /**
      * Loads a class
      * 
      * @param className - the class to load
      * @return The loaded class
      * @throws ClassNotFoundException If the class cannot be found (duh!)
      */
     public static Class classForName(String className)
             throws ClassNotFoundException {
         Class clazz = null;
         clazz = getClassLoader().loadClass(className);
         if (clazz == null) {
             clazz = Class.forName(className);
         }
         return clazz;
     }
 
     /**
      * Creates an instance of a class
      * 
      * @param className - the class to create
      * @return An instance of the class
      * @throws ClassNotFoundException If the class cannot be found (duh!)
      * @throws InstantiationException If the class cannot be instantiaed
      * @throws IllegalAccessException If the class is not public, or other
      *             access problems arise
      */
     public static Object instantiate(String className)
             throws ClassNotFoundException, InstantiationException,
             IllegalAccessException {
         return instantiate(classForName(className));
     }
 
     /**
      * Creates an instance of a class
      * 
      * @param clazz - the class to create
      * @return An instance of the class
      * @throws InstantiationException If the class cannot be instantiaed
      * @throws IllegalAccessException If the class is not public, or other
      *             access problems arise
      */
     public static Object instantiate(Class clazz)
             throws InstantiationException, IllegalAccessException {
         return clazz.newInstance();
     }
 
     private static ClassLoader getClassLoader() {
         if (defaultClassLoader != null) {
             return defaultClassLoader;
         } else {
             return Thread.currentThread().getContextClassLoader();
         }
     }
 
 }

1		/**
2		* @(#)ResourceHelper.java
3		*
4		* JFoxSOAF, Service-Oriented Application Framework
5		*
6		* Copyright(c) JFoxSOAF Team
7		*
8		* Licensed under the GNU LGPL, Version 2.1 (the "License");
9		* you may not use this file except in compliance with the License.
10		* You may obtain a copy of the License at
11		*
12		* http://www.gnu.org/copyleft/lesser.html
13		*
14		* Unless required by applicable law or agreed to in writing, software
15		* distributed under the License is distributed on an "AS IS" BASIS,
16		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17		* See the License for the specific language governing permissions and
18		* limitations under the License.
19		*
20		* For more information, please visit:
21		* http://www.jfox.cn/confluence/display/JFoxSOAF/Home
22		* http://www.huihoo.org/jfox/jfoxsoaf
23		*/
24
25		package org.huihoo.jfox.soaf.util.resource;
26
27		import java.io.File;
28		import java.io.IOException;
29		import java.io.InputStream;
30		import java.io.InputStreamReader;
31		import java.io.Reader;
32		import java.net.URL;
33		import java.net.URLConnection;
34		import java.util.Properties;
35
36		/**
37		* A class to simplify access to resources through the classloader.
38		*
39		* @author <a href="mailto:founder_chen@yahoo.com.cn">Peter Cheng </a>
40		* @author <a href="mailto:clinton.begin@ibatis.com">Clinton Begin </a>
41		* @version $Revision: 1.6 $ $Date: 2005/05/22 06:50:55 $
42		* @version Revision: 1.0
43		*/
44
45		public class ResourceHelper {
46
47		private static ClassLoader defaultClassLoader;
48
49	0	public ResourceHelper() {
50		}
51
52		/**
53		* Returns the default classloader (may be null).
54		*
55		* @return The default classloader
56		*/
57	0	public static ClassLoader getDefaultClassLoader() {
58	0	return defaultClassLoader;
59		}
60
61		/**
62		* Sets the default classloader
63		*
64		* @param defaultClassLoader - the new default ClassLoader
65		*/
66	0	public static void setDefaultClassLoader(ClassLoader defaultClassLoader) {
67	0	ResourceHelper.defaultClassLoader = defaultClassLoader;
68		}
69
70		/**
71		* Returns the URL of the resource on the classpath
72		*
73		* @param resource The resource to find
74		* @return The resource
75		* @throws java.io.IOException If the resource cannot be found or read
76		*/
77	27	public static URL getResourceURL(String resource) throws IOException {
78	27	return getResourceURL(getClassLoader(), resource);
79		}
80
81		/**
82		* Returns the URL of the resource on the classpath
83		*
84		* @param loader The classloader used to load the resource
85		* @param resource The resource to find
86		* @return The resource
87		* @throws java.io.IOException If the resource cannot be found or read
88		*/
89	27	public static URL getResourceURL(ClassLoader loader, String resource)
90		throws IOException {
91	27	URL url = null;
92	27	if (loader != null) {
93	27	url = loader.getResource(resource);
94		}
95	27	if (url == null) {
96	0	url = ClassLoader.getSystemResource(resource);
97		}
98
99	27	if (url == null) {
100	0	throw new IOException("Could not find resource " + resource);
101		}
102	27	return url;
103		}
104
105		/**
106		* Returns a resource on the classpath as a Stream object
107		*
108		* @param resource The resource to find
109		* @return The resource
110		* @throws java.io.IOException If the resource cannot be found or read
111		*/
112	111	public static InputStream getResourceAsStream(String resource)
113		throws IOException {
114	111	return getResourceAsStream(getClassLoader(), resource);
115		}
116
117		/**
118		* Returns a resource on the classpath as a Stream object
119		*
120		* @param loader The classloader used to load the resource
121		* @param resource The resource to find
122		* @return The resource
123		* @throws java.io.IOException If the resource cannot be found or read
124		*/
125	111	public static InputStream getResourceAsStream(ClassLoader loader,
126		String resource) throws IOException {
127	111	InputStream in = null;
128	111	if (loader != null) {
129	111	in = loader.getResourceAsStream(resource);
130		}
131	111	if (in == null) {
132	0	in = ClassLoader.getSystemResourceAsStream(resource);
133		}
134	111	if (in == null) {
135	0	throw new IOException("Could not find resource " + resource);
136		}
137	111	return in;
138		}
139
140		/**
141		* Returns a resource on the classpath as a Properties object
142		*
143		* @param resource The resource to find
144		* @return The resource
145		* @throws java.io.IOException If the resource cannot be found or read
146		*/
147	27	public static Properties getResourceAsProperties(String resource)
148		throws IOException {
149	27	Properties props = new Properties();
150	27	InputStream in = null;
151	27	String propfile = resource;
152	27	in = getResourceAsStream(propfile);
153	27	props.load(in);
154	27	in.close();
155	27	return props;
156		}
157
158		/**
159		* Returns a resource on the classpath as a Properties object
160		*
161		* @param loader The classloader used to load the resource
162		* @param resource The resource to find
163		* @return The resource
164		* @throws java.io.IOException If the resource cannot be found or read
165		*/
166	0	public static Properties getResourceAsProperties(ClassLoader loader,
167		String resource) throws IOException {
168	0	Properties props = new Properties();
169	0	InputStream in = null;
170	0	String propfile = resource;
171	0	in = getResourceAsStream(loader, propfile);
172	0	props.load(in);
173	0	in.close();
174	0	return props;
175		}
176
177		/**
178		* Returns a resource on the classpath as a Reader object
179		*
180		* @param resource The resource to find
181		* @return The resource
182		* @throws java.io.IOException If the resource cannot be found or read
183		*/
184	0	public static Reader getResourceAsReader(String resource)
185		throws IOException {
186	0	return new InputStreamReader(getResourceAsStream(resource));
187		}
188
189		/**
190		* Returns a resource on the classpath as a Reader object
191		*
192		* @param loader The classloader used to load the resource
193		* @param resource The resource to find
194		* @return The resource
195		* @throws java.io.IOException If the resource cannot be found or read
196		*/
197	0	public static Reader getResourceAsReader(ClassLoader loader, String resource)
198		throws IOException {
199	0	return new InputStreamReader(getResourceAsStream(loader, resource));
200		}
201
202		/**
203		* Returns a resource on the classpath as a File object
204		*
205		* @param resource The resource to find
206		* @return The resource
207		* @throws java.io.IOException If the resource cannot be found or read
208		*/
209	0	public static File getResourceAsFile(String resource) throws IOException {
210	0	return new File(getResourceURL(resource).getFile());
211		}
212
213		/**
214		* Returns a resource on the classpath as a File object
215		*
216		* @param loader - the classloader used to load the resource
217		* @param resource - the resource to find
218		* @return The resource
219		* @throws java.io.IOException If the resource cannot be found or read
220		*/
221	0	public static File getResourceAsFile(ClassLoader loader, String resource)
222		throws IOException {
223	0	return new File(getResourceURL(loader, resource).getFile());
224		}
225
226		/**
227		* Gets a URL as an input stream
228		*
229		* @param urlString - the URL to get
230		* @return An input stream with the data from the URL
231		* @throws java.io.IOException If the resource cannot be found or read
232		*/
233	0	public static InputStream getUrlAsStream(String urlString)
234		throws IOException {
235	0	URL url = new URL(urlString);
236	0	URLConnection conn = url.openConnection();
237	0	return conn.getInputStream();
238		}
239
240		/**
241		* Gets a URL as a Reader
242		*
243		* @param urlString - the URL to get
244		* @return A Reader with the data from the URL
245		* @throws java.io.IOException If the resource cannot be found or read
246		*/
247	0	public static Reader getUrlAsReader(String urlString) throws IOException {
248	0	return new InputStreamReader(getUrlAsStream(urlString));
249		}
250
251		/**
252		* Gets a URL as a Properties object
253		*
254		* @param urlString - the URL to get
255		* @return A Properties object with the data from the URL
256		* @throws java.io.IOException If the resource cannot be found or read
257		*/
258	0	public static Properties getUrlAsProperties(String urlString)
259		throws IOException {
260	0	Properties props = new Properties();
261	0	InputStream in = null;
262	0	String propfile = urlString;
263	0	in = getUrlAsStream(propfile);
264	0	props.load(in);
265	0	in.close();
266	0	return props;
267		}
268
269		/**
270		* Loads a class
271		*
272		* @param className - the class to load
273		* @return The loaded class
274		* @throws ClassNotFoundException If the class cannot be found (duh!)
275		*/
276	147	public static Class classForName(String className)
277		throws ClassNotFoundException {
278	147	Class clazz = null;
279	147	clazz = getClassLoader().loadClass(className);
280	147	if (clazz == null) {
281	0	clazz = Class.forName(className);
282		}
283	147	return clazz;
284		}
285
286		/**
287		* Creates an instance of a class
288		*
289		* @param className - the class to create
290		* @return An instance of the class
291		* @throws ClassNotFoundException If the class cannot be found (duh!)
292		* @throws InstantiationException If the class cannot be instantiaed
293		* @throws IllegalAccessException If the class is not public, or other
294		* access problems arise
295		*/
296	19	public static Object instantiate(String className)
297		throws ClassNotFoundException, InstantiationException,
298		IllegalAccessException {
299	19	return instantiate(classForName(className));
300		}
301
302		/**
303		* Creates an instance of a class
304		*
305		* @param clazz - the class to create
306		* @return An instance of the class
307		* @throws InstantiationException If the class cannot be instantiaed
308		* @throws IllegalAccessException If the class is not public, or other
309		* access problems arise
310		*/
311	19	public static Object instantiate(Class clazz)
312		throws InstantiationException, IllegalAccessException {
313	19	return clazz.newInstance();
314		}
315
316	285	private static ClassLoader getClassLoader() {
317	285	if (defaultClassLoader != null) {
318	0	return defaultClassLoader;
319		} else {
320	285	return Thread.currentThread().getContextClassLoader();
321		}
322		}
323
324		}