1 /* ====================================================================
2 * The Apache Software License, Version 1.1
3 *
4 * Copyright (c) 2000 The Apache Software Foundation. All rights
5 * reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * 3. The end-user documentation included with the redistribution,
20 * if any, must include the following acknowledgment:
21 * "This product includes software developed by the
22 * Apache Software Foundation (http://www.apache.org/)."
23 * Alternately, this acknowledgment may appear in the software itself,
24 * if and wherever such third-party acknowledgments normally appear.
25 *
26 * 4. The names "Apache" and "Apache Software Foundation" must
27 * not be used to endorse or promote products derived from this
28 * software without prior written permission. For written
29 * permission, please contact apache@apache.org.
30 *
31 * 5. Products derived from this software may not be called "Apache",
32 * nor may "Apache" appear in their name, without prior written
33 * permission of the Apache Software Foundation.
34 *
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * SUCH DAMAGE.
47 * ====================================================================
48 *
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Software Foundation. For more
51 * information on the Apache Software Foundation, please see
52 * <http://www.apache.org/>.
53 *
54 * Portions of this software are based upon public domain software
55 * originally written at the National Center for Supercomputing Applications,
56 * University of Illinois, Urbana-Champaign.
57 */
58 package com.bonevich.eclipse.logging.pathvars;
59
60 import com.bonevich.eclipse.logging.LoggingPlugin;
61
62 import org.eclipse.core.resources.IPathVariableManager;
63 import org.eclipse.core.resources.IWorkspace;
64 import org.eclipse.core.runtime.IPath;
65 import org.eclipse.core.runtime.Path;
66 import org.eclipse.core.runtime.Platform;
67 import org.eclipse.jdt.core.ClasspathVariableInitializer;
68 import org.eclipse.jdt.core.JavaCore;
69 import org.eclipse.jdt.core.JavaModelException;
70
71 import java.io.IOException;
72 import java.net.URL;
73
74 /***
75 * Base class for the Loggin Plug-in classpath variable initializers. Provides
76 * the basic implementation for adding a plug-in path-relative logging library.
77 * Subclasses need only supply the path to the library via {@link #getLibraryPath}.
78 * @author jbonevic
79 */
80 public abstract class LoggingClasspathVariableInitializer
81 extends ClasspathVariableInitializer
82 {
83
84 public LoggingClasspathVariableInitializer()
85 {
86 super();
87 }
88
89 public void initialize(String variableName)
90 {
91 IWorkspace workspace = LoggingPlugin.getWorkspace();
92 IPathVariableManager pathManager = workspace.getPathVariableManager();
93 if (! pathManager.isDefined(variableName))
94 {
95 try
96 {
97 URL jarURL = new URL(
98 LoggingPlugin.getPlugin().getDescriptor().getInstallURL(),
99 getLibraryPath()
100 );
101 URL localURL = Platform.asLocalURL(jarURL);
102 IPath path = new Path(localURL.getFile());
103 JavaCore.setClasspathVariable(variableName, path, null);
104 }
105 catch (IOException e)
106 {
107 e.printStackTrace();
108 }
109 catch (JavaModelException e)
110 {
111 e.printStackTrace();
112 }
113 }
114 }
115
116 protected abstract String getLibraryPath();
117
118 }
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