Coverage Report

 /**
  * Copyright 2009 Martin Vysny.
  *
  * This file is part of WebVM.
  *
  * WebVM is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
  * WebVM is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with WebVM.  If not, see <http://www.gnu.org/licenses/>.
  */
 package sk.baka.webvm.analyzer.classloader;
 
 import java.io.InputStream;
 import java.net.URL;
 import java.util.Collections;
 import java.util.EnumSet;
 import java.util.Enumeration;
 import sk.baka.tools.IOUtils;
 
 /**
  * Auto-detection of the class loader type.
  * @author Martin Vysny
  */
 public enum CLEnum {
 
     /**
      * The WebVM WAR classloader.
      */
     WAR {
 
         @Override
         protected boolean matches(final ClassLoader cl) {
             try {
                 final Enumeration<URL> e = cl.getResources("WEB-INF/web.xml");
                 for (final URL url : Collections.list(e)) {
                     final InputStream in = url.openStream();
                     try {
                         final String webXml = IOUtils.toString(in);
                         if (webXml.contains("WebVM")) {
                             return true;
                         }
                     } finally {
                         IOUtils.closeQuietly(in);
                     }
                 }
             } catch (Exception ex) {
                 return false;
             }
             return false;
         }
     },
     /**
      * A classloader which loads ejb.jar
      */
     EJBJAR {
 
         @Override
         protected boolean matches(final ClassLoader cl) {
             return cl.getResource("META-INF/ejb-jar.xml") != null;
         }
     },
     /**
      * Classloader for the EAR application.
      */
     EAR {
 
         protected boolean matches(final ClassLoader cl) {
             return cl.getResource("META-INF/application.xml") != null;
         }
     },
     /**
      * A {@link ClassLoader#getSystemClassLoader() system classloader}.
      */
     SYSTEM {
 
         protected boolean matches(final ClassLoader cl) {
             return cl == ClassLoader.getSystemClassLoader();
         }
     },
     /**
      * Root classloader (its parent is null).
      */
     ROOT {
 
         protected boolean matches(final ClassLoader cl) {
             return cl.getParent() == null;
         }
     },
     /**
      * An unknown classloader type.
      */
     SERVER {
 
         protected boolean matches(final ClassLoader cl) {
             return false;
         }
     };
 
     /**
      * Checks if this enum constant matches given classloader.
      * @param cl the classloader to match, not null
      * @return true if given classloader is of this type.
      */
     protected abstract boolean matches(final ClassLoader cl);
 
     /**
      * Detects the type of classes this class loader manages.
      * @param cl the classloader, not null.
      * @return class loader type
      */
     public static EnumSet<CLEnum> getTypes(final ClassLoader cl) {
         final EnumSet<CLEnum> result = EnumSet.noneOf(CLEnum.class);
         for (final CLEnum e : values()) {
             if (e.matches(cl)) {
                 result.add(e);
             }
         }
         if (result.isEmpty()) {
             result.add(SERVER);
         }
         return result;
     }
 }

1		/**
2		* Copyright 2009 Martin Vysny.
3		*
4		* This file is part of WebVM.
5		*
6		* WebVM is free software: you can redistribute it and/or modify
7		* it under the terms of the GNU General Public License as published by
8		* the Free Software Foundation, either version 3 of the License, or
9		* (at your option) any later version.
10		*
11		* WebVM is distributed in the hope that it will be useful,
12		* but WITHOUT ANY WARRANTY; without even the implied warranty of
13		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14		* GNU General Public License for more details.
15		*
16		* You should have received a copy of the GNU General Public License
17		* along with WebVM. If not, see <http://www.gnu.org/licenses/>.
18		*/
19		package sk.baka.webvm.analyzer.classloader;
20
21		import java.io.InputStream;
22		import java.net.URL;
23		import java.util.Collections;
24		import java.util.EnumSet;
25		import java.util.Enumeration;
26		import sk.baka.tools.IOUtils;
27
28		/**
29		* Auto-detection of the class loader type.
30		* @author Martin Vysny
31		*/
32	0	public enum CLEnum {
33
34		/**
35		* The WebVM WAR classloader.
36		*/
37	0	WAR {
38
39		@Override
40		protected boolean matches(final ClassLoader cl) {
41		try {
42	0	final Enumeration<URL> e = cl.getResources("WEB-INF/web.xml");
43	0	for (final URL url : Collections.list(e)) {
44	0	final InputStream in = url.openStream();
45		try {
46	0	final String webXml = IOUtils.toString(in);
47	0	if (webXml.contains("WebVM")) {
48	0	return true;
49		}
50		} finally {
51	0	IOUtils.closeQuietly(in);
52	0	}
53	0	}
54	0	} catch (Exception ex) {
55	0	return false;
56	0	}
57	0	return false;
58		}
59		},
60		/**
61		* A classloader which loads ejb.jar
62		*/
63	0	EJBJAR {
64
65		@Override
66		protected boolean matches(final ClassLoader cl) {
67	0	return cl.getResource("META-INF/ejb-jar.xml") != null;
68		}
69		},
70		/**
71		* Classloader for the EAR application.
72		*/
73	0	EAR {
74
75		protected boolean matches(final ClassLoader cl) {
76	0	return cl.getResource("META-INF/application.xml") != null;
77		}
78		},
79		/**
80		* A {@link ClassLoader#getSystemClassLoader() system classloader}.
81		*/
82	0	SYSTEM {
83
84		protected boolean matches(final ClassLoader cl) {
85	0	return cl == ClassLoader.getSystemClassLoader();
86		}
87		},
88		/**
89		* Root classloader (its parent is null).
90		*/
91	0	ROOT {
92
93		protected boolean matches(final ClassLoader cl) {
94	0	return cl.getParent() == null;
95		}
96		},
97		/**
98		* An unknown classloader type.
99		*/
100	0	SERVER {
101
102		protected boolean matches(final ClassLoader cl) {
103	0	return false;
104		}
105		};
106
107		/**
108		* Checks if this enum constant matches given classloader.
109		* @param cl the classloader to match, not null
110		* @return true if given classloader is of this type.
111		*/
112		protected abstract boolean matches(final ClassLoader cl);
113
114		/**
115		* Detects the type of classes this class loader manages.
116		* @param cl the classloader, not null.
117		* @return class loader type
118		*/
119		public static EnumSet<CLEnum> getTypes(final ClassLoader cl) {
120	0	final EnumSet<CLEnum> result = EnumSet.noneOf(CLEnum.class);
121	0	for (final CLEnum e : values()) {
122	0	if (e.matches(cl)) {
123	0	result.add(e);
124		}
125		}
126	0	if (result.isEmpty()) {
127	0	result.add(SERVER);
128		}
129	0	return result;
130		}
131		}