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19
20 package org.netbeans.modules.java.source.classpath;
21
22 import java.beans.PropertyChangeEvent  ;
23 import java.beans.PropertyChangeListener ;
24 import java.beans.PropertyChangeSupport ;
25 import java.io.File ;
26 import java.io.IOException ;
27 import java.net.URI ;
28 import java.net.URL ;
29 import java.util.LinkedList ;
30 import java.util.List ;
31 import org.netbeans.api.java.classpath.ClassPath;
32 import org.netbeans.api.java.platform.JavaPlatform;
33 import org.netbeans.api.java.platform.JavaPlatformManager;
34 import org.netbeans.modules.java.source.usages.Index;
35 import org.netbeans.spi.java.classpath.ClassPathFactory;
36 import org.netbeans.spi.java.classpath.ClassPathImplementation;
37 import org.netbeans.spi.java.classpath.PathResourceImplementation;
38 import org.netbeans.spi.java.classpath.support.ClassPathSupport;
39 import org.openide.ErrorManager;
40 import org.openide.util.WeakListeners;
41
42
46 public class CacheClassPath implements ClassPathImplementation, PropertyChangeListener {
47
48 private final ClassPath cp;
49 private final boolean translate;
50 private final boolean isBoot;
51 private PropertyChangeSupport listeners;
52 private List <PathResourceImplementation> cache;
53
54
55 private CacheClassPath (ClassPath cp, boolean translate, boolean isBoot) {
56 this.listeners = new PropertyChangeSupport (this);
57 this.cp = cp;
58 this.translate = translate;
59 this.isBoot = isBoot;
60 this.cp.addPropertyChangeListener (WeakListeners.propertyChange(this,cp));
61 }
62
63 public void removePropertyChangeListener(final PropertyChangeListener listener) {
64 this.listeners.removePropertyChangeListener(listener);
65 }
66
67 public void addPropertyChangeListener(final PropertyChangeListener listener) {
68 this.listeners.addPropertyChangeListener(listener);
69 }
70
71 public void propertyChange (final PropertyChangeEvent event) {
72 if (ClassPath.PROP_ENTRIES.equals(event.getPropertyName())) {
73 synchronized (this) {
74 this.cache = null;
75 }
76 this.listeners.firePropertyChange(PROP_RESOURCES,null,null);
77 }
78 }
79
80 public synchronized List <? extends PathResourceImplementation> getResources() {
81 if (this.cache == null) {
82 List <ClassPath.Entry> entries = this.cp.entries();
83 this.cache = new LinkedList <PathResourceImplementation> ();
84 if (isBoot && entries.size() == 0) {
85 JavaPlatform defaultPlatform = JavaPlatformManager.getDefault().getDefaultPlatform();
86 assert defaultPlatform != null;
87 entries = defaultPlatform.getBootstrapLibraries().entries();
88 assert entries.size() > 0;
89 for (ClassPath.Entry entry : entries) {
90 this.cache.add (ClassPathSupport.createResource(entry.getURL()));
91 }
92 }
93 else {
94 final GlobalSourcePath gsp = GlobalSourcePath.getDefault();
95 for (ClassPath.Entry entry : entries) {
96 URL url = entry.getURL();
97 URL [] sourceUrls;
98 if (translate) {
99 sourceUrls = gsp.getSourceRootForBinaryRoot(url, this.cp, true);
100 }
101 else {
102 sourceUrls = new URL [] {url};
103 }
104 if (sourceUrls != null) {
105 for (URL sourceUrl : sourceUrls) {
106 try {
107 File cacheFolder = Index.getClassFolder(sourceUrl);
108 URL cacheUrl = cacheFolder.toURI().toURL();
109 if (!cacheFolder.exists()) {
110 cacheUrl = new URL (cacheUrl.toExternalForm()+"/"); }
112 this.cache.add(ClassPathSupport.createResource(cacheUrl));
113 } catch (IOException ioe) {
114 ErrorManager.getDefault().notify(ioe);
115 }
116 }
117 } else {
118 this.cache.add (ClassPathSupport.createResource(url));
119 }
120 }
121 }
122 }
123 return this.cache;
124 }
125
126
127 public static ClassPath forClassPath (final ClassPath cp) {
128 assert cp != null;
129 return ClassPathFactory.createClassPath(new CacheClassPath(cp,true,false));
130 }
131
132 public static ClassPath forBootPath (final ClassPath cp) {
133 assert cp != null;
134 return ClassPathFactory.createClassPath(new CacheClassPath(cp,true,true));
135 }
136
137 public static ClassPath forSourcePath (final ClassPath sourcePath) {
138 assert sourcePath != null;
139 return ClassPathFactory.createClassPath(new CacheClassPath(sourcePath,false,false));
140 }
141
142 }
143 |
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