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1
5 package org.exoplatform.container.groovy;
6
7 import groovy.lang.GroovyClassLoader;
8 import java.io.File  ;
9 import java.io.FileOutputStream ;
10 import java.net.URL ;
11 import java.net.URLClassLoader ;
12 import java.util.* ;
13 import org.exoplatform.commons.utils.IOUtil;
14
19 public class GroovyManager {
20 private URL classpath_ ;
21 private Map cacheObject_ ;
22 private GroovyClassLoader gcl_ ;
23 private List listeners_ ;
24 private boolean dispose_ ;
25
26 public GroovyManager(URL classpath) throws Exception {
27 classpath_ = classpath ;
28 listeners_ = new ArrayList(5) ;
29 listeners_.add(new GroovyManagerListener()) ;
30 cacheObject_ = new HashMap() ;
31 gcl_ = createGroovyClassLoader() ;
32 dispose_ = false ;
33 }
34
35 public boolean isDispose() { return dispose_ ; }
36 public void setDispose(boolean b) { dispose_ = b ; }
37
38 public String getGroovyClassPath() { return classpath_.toString() ; }
39
40 synchronized public void addListener(GroovyManagerListener listener) {
41 listeners_.add(listener) ;
42 }
43
44 synchronized public void removeListener(GroovyManagerListener listener) {
45 listeners_.remove(listener) ;
46 }
47
48 synchronized public void removeAllListener() { listeners_.clear() ; }
49
50 public Object getObject(String resource) throws Exception {
51 GroovyObject gobject= getGroovyObject(resource) ;
52 if(gobject.getType() == null) {
53 gobject.setType(gcl_ );
54 GroovyManagerListener.reload(listeners_, gobject) ;
55 }
56 return gobject.getObject() ;
57 }
58
59 public GroovyClassLoader getGroovyClassLoader() { return gcl_ ; }
60
61 public GroovyObject getGroovyObject(String resource) throws Exception {
62 GroovyObject gobject = (GroovyObject) cacheObject_.get(resource) ;
63 if(gobject == null) {
64 synchronized (cacheObject_){
65 gobject = new GroovyObject(resource) ;
66 gobject.setType(gcl_ );
67 GroovyManagerListener.load(listeners_, gobject) ;
68 cacheObject_.put(resource, gobject) ;
69 }
70 }
71 return gobject ;
72 }
73
74 public String getGroovyObjectAsText(String resource) throws Exception {
75 return IOUtil.getStreamContentAsString(gcl_.getResourceAsStream(resource)) ;
76 }
77
78 public void saveGroovyObject(String resource, String text) throws Exception {
79 String url = gcl_.getResource(resource).toString() ;
80 if(!url.startsWith("file:")) {
81 throw new Exception ("The resources is in a jar file........") ;
82 }
83 String filePath = url.substring("file:".length() + 1, url.length()) ;
84 FileOutputStream os = new FileOutputStream (filePath) ;
85 os.write(text.getBytes()) ;
86 os.close() ;
87 }
88
89 private GroovyClassLoader createGroovyClassLoader() throws Exception {
90 ClassLoader parentLoader = Thread.currentThread().getContextClassLoader() ;
91 if(classpath_ != null) {
92 URL [] url = { classpath_ } ;
93 parentLoader = new URLClassLoader (url, Thread.currentThread().getContextClassLoader()) ;
94 String cpath = System.getProperty("java.class.path") ;
95 String newpath = classpath_.toString() ;
96 newpath = newpath.substring("file:".length(), newpath.length()) ;
97 if(cpath.indexOf(newpath) < 0) {
98 cpath = cpath + File.pathSeparator + newpath ;
99 System.setProperty("java.class.path", cpath) ;
100 }
101 }
102 return new GroovyClassLoader(parentLoader) ;
103 }
104
105 public void checkModifiedObjects() throws Exception {
106 Iterator i = cacheObject_.values().iterator() ;
107 while(i.hasNext()) {
108 GroovyObject gobject = (GroovyObject) i.next() ;
109 if(gobject.isReloadable() && isObjectModified(gobject)) {
110 reloadGroovyObjects();
111 return ;
112 }
113 }
114 }
115
116 public void reloadGroovyObjects() throws Exception {
117 synchronized(cacheObject_) {
118 Iterator i = cacheObject_.values().iterator() ;
119 gcl_ = createGroovyClassLoader() ;
120 while(i.hasNext()) {
121 GroovyObject gobject = (GroovyObject) i.next() ;
122 GroovyManagerListener.unload(listeners_, gobject) ;
123 gobject.setObject(null) ;
124 }
125 }
126 }
127
128 private boolean isObjectModified(GroovyObject gobject) throws Exception {
129 URL resourceURL = gcl_.getResource(gobject.getGroovyResource()) ;
130 if(resourceURL == null) return false ;
133 String url = resourceURL.toString();
134 String filePath = url.substring("file:".length(), url.length()) ;
135 File file = new File (filePath) ;
136 long lastModifiedTime = file.lastModified() ;
137 if(lastModifiedTime > gobject.getLoadTime()) {
138 return true ;
139 }
140 return false ;
141 }
142 } |
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