Revision 41788 trunk/org.gvsig.desktop/org.gvsig.desktop.framework/org.gvsig.andami/src/main/java/org/gvsig/andami/plugins/PluginClassLoader.java
| PluginClassLoader.java | ||
|---|---|---|
| 180 | 180 |
} |
| 181 | 181 |
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| 182 | 182 |
protected Class singleLoadClass(String name) throws ClassNotFoundException {
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// Buscamos en las clases de las librer�as del plugin |
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Class<?> c = findLoadedClass(name); |
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if (c != null) {
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return c; |
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} |
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logger.debug("Searching class '{}' in {}", new Object[] {name, this.toString()});
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try {
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ZipFile jar = (ZipFile) clasesJar.get(name); |
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//No esta en ningun jar |
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if (jar == null) {
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//Buscamos en el directorio de clases |
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String classFileName = baseDir + "/classes/" + |
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name.replace('.', '/') + ".class";
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File f = new File(classFileName); |
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if (f.exists()){
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byte[] data = loadClassData(f); |
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c = defineClass(name, data, 0, data.length); |
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logger.debug("Found class {} in classes-folder of plugin {}",
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new Object[] {name, baseDir});
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} else {
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//Buscamos en los otros plugins |
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Set<String>pluginsVisiteds = new HashSet<String>(); |
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c = this.singleLoadClassFromOthersPlugins(pluginsVisiteds, name); |
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} |
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} else {
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String fileName = name.replace('.', '/') + ".class";
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ZipEntry classFile = jar.getEntry(fileName); |
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byte[] data = loadClassData(classFile, |
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jar.getInputStream(classFile)); |
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c = defineClass(name, data, 0, data.length); |
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logger.debug("Found class {} in jar {} of plugin {}",
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new Object[] { name, jar.getName(), baseDir} );
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} |
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if (c == null) {
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throw new ClassNotFoundException(name); |
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} |
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return c; |
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} catch (IOException e) {
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throw new ClassNotFoundException(Messages.getString( |
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"PluginClassLoader.Error_reading_file") + name); |
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} |
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Class<?> c; |
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Set<String>pluginsVisiteds = new HashSet<String>(); |
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c = this.singleLoadClass(pluginsVisiteds, name); |
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return c; |
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} |
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/** |
| ... | ... | |
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*/ |
| 386 | 341 |
public URL getResource(String res) {
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| 387 | 342 |
URL ret = null; |
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// |
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// Primero buscamos en el directorio del plugin. |
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try {
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logger.debug("Plugin {}. Searching resource '{}'", res, this.getPluginName());
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List<String> resource = new ArrayList<String>(); |
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StringTokenizer st = new StringTokenizer(res, "\\/"); |
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while ( st.hasMoreTokens() ) {
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String token = st.nextToken(); |
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resource.add(token); |
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} |
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ret = getResource(baseDir, resource); |
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if ( ret != null ) {
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return ret; |
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} |
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} catch (Exception e) {
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logger.warn("Plugin {}. Error getting resource '{}'.", new Object[]{this.getPluginName(), res}, e);
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} |
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// |
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// Luego en los plugins de los que depende |
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Set<String>pluginsVisiteds = new HashSet<String>(); |
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ret = this.getResourceFromOthersPlugins(pluginsVisiteds, res); |
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// |
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// Por ultimo en el class loader padre, se supone que es el del sistema. |
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try {
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ret = super.getResource(res); |
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} catch (Exception e) {
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logger.warn("Plugin {}. Error getting resource '{}' in parent classloader'", new Object[]{this.getPluginName(), res}, e);
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} |
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if ( ret == null ) {
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logger.debug("Plugin {}. Resource '{}' not found.", new Object[]{this.getPluginName(), res});
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} |
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ret = this.getResource(pluginsVisiteds, res); |
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return ret; |
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} |
| 424 | 348 |
|
| ... | ... | |
| 505 | 429 |
} |
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} |
| 507 | 431 |
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private Class singleLoadClassFromOthersPlugins(Set<String> pluginsVisiteds, String name) throws ClassNotFoundException {
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Class<?> c=null; |
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private Class singleLoadClass(Set<String> pluginsVisiteds, String name) throws ClassNotFoundException {
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if ( pluginsVisiteds.contains(this.getPluginName()) ) {
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return null; |
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} |
| 514 | 437 |
pluginsVisiteds.add(this.getPluginName()); |
| 515 | 438 |
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logger.debug("Searching in depends pluginLoaders");
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for ( int i = 0; i < pluginLoaders.size(); i++ ) {
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c = null; |
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if ( pluginLoaders.get(i) != null ) {
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try {
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c = pluginLoaders.get(i).singleLoadClass(name); |
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} catch (ClassNotFoundException e) {
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// Si no la encontramos en el primer plugin, capturamos la exceptcion |
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// porque es probable que la encontremos en el resto de plugins. |
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// Buscamos en las clases de las librer�as del plugin |
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Class<?> c = findLoadedClass(name); |
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if (c != null) {
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return c; |
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} |
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logger.debug("Searching class '{}' in {}", new Object[] {name, this.toString()});
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try {
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ZipFile jar = (ZipFile) clasesJar.get(name); |
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//No esta en ningun jar |
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if (jar == null) {
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//Buscamos en el directorio de clases |
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String classFileName = baseDir + "/classes/" + |
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name.replace('.', '/') + ".class";
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File f = new File(classFileName); |
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if (f.exists()){
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byte[] data = loadClassData(f); |
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c = defineClass(name, data, 0, data.length); |
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logger.debug("Found class {} in classes-folder of plugin {}",
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new Object[] {name, baseDir});
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} else {
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//Buscamos en los otros plugins |
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for ( int i = 0; i < pluginLoaders.size(); i++ ) {
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c = null; |
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if ( pluginLoaders.get(i) != null ) {
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try {
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c = pluginLoaders.get(i).singleLoadClass(pluginsVisiteds, name); |
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} catch (ClassNotFoundException e) {
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// Si no la encontramos en el primer plugin, capturamos la exceptcion |
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// porque es probable que la encontremos en el resto de plugins. |
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} |
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} |
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if ( c != null ) {
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return c; |
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} |
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} |
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} |
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} else {
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String fileName = name.replace('.', '/') + ".class";
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ZipEntry classFile = jar.getEntry(fileName); |
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byte[] data = loadClassData(classFile, |
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jar.getInputStream(classFile)); |
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c = defineClass(name, data, 0, data.length); |
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logger.debug("Found class {} in jar {} of plugin {}",
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new Object[] { name, jar.getName(), baseDir} );
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} |
| 527 |
if ( c != null ) {
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return c; |
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if (c == null) {
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throw new ClassNotFoundException(name); |
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| 529 | 493 |
} |
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} |
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| 531 | 494 |
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return null; |
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return c; |
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} catch (IOException e) {
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throw new ClassNotFoundException(Messages.getString( |
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"PluginClassLoader.Error_reading_file") + name); |
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} |
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| 533 | 500 |
} |
| 534 | 501 |
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|
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private URL getResourceFromOthersPlugins(Set<String>pluginsVisiteds, String res) {
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/** |
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* Este metodo busca en este class loader y en el de los plugins |
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* de los que depende. Se cerciora de que no se queda |
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* bucleado cuando hay una relacion recursiva entre los plugins. |
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* |
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* @param pluginsVisiteds, set con los plugins que va visitando para evitar |
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* que se quede bucleado cuando hay referencia ciclicas entre plugins. |
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* @param res |
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* |
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* @return |
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*/ |
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private URL getResource(Set<String> pluginsVisiteds, String res) {
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URL ret = null; |
| 538 | 515 |
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if( pluginsVisiteds.contains(this.getPluginName()) ) {
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if ( pluginsVisiteds.contains(this.getPluginName()) ) {
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| 540 | 517 |
return null; |
| 541 | 518 |
} |
| 542 | 519 |
pluginsVisiteds.add(this.getPluginName()); |
| 543 | 520 |
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// |
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// Primero buscamos en el directorio del plugin. |
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try {
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logger.debug("Plugin {}. Searching resource '{}'", res, this.getPluginName());
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List<String> resource = new ArrayList<String>(); |
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StringTokenizer st = new StringTokenizer(res, "\\/"); |
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while ( st.hasMoreTokens() ) {
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String token = st.nextToken(); |
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resource.add(token); |
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} |
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ret = getResource(baseDir, resource); |
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if ( ret != null ) {
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return ret; |
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} |
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} catch (Exception e) {
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logger.warn("Plugin {}. Error getting resource '{}'.", new Object[]{this.getPluginName(), res}, e);
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} |
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|
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| 544 | 539 |
logger.debug("Plugin {}. Searching in depends pluginLoaders", this.getPluginName());
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| 545 | 540 |
for ( int i = 0; i < this.pluginLoaders.size(); i++ ) {
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| 546 | 541 |
PluginClassLoader pluginClassLoader = pluginLoaders.get(i); |
| 547 | 542 |
if ( pluginClassLoader != null ) {
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| 548 | 543 |
try {
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| 549 | 544 |
pluginsVisiteds.add(pluginClassLoader.getPluginName()); |
| 550 |
ret = pluginClassLoader.getResourceFromOthersPlugins(pluginsVisiteds, res);
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ret = pluginClassLoader.getResource(pluginsVisiteds, res); |
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| 551 | 546 |
if ( ret != null ) {
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| 552 | 547 |
logger.trace("Plugin {}. Found resource '{}' in plugin '{}'.",
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| 553 | 548 |
new Object[]{
|
| ... | ... | |
| 560 | 555 |
} |
| 561 | 556 |
} |
| 562 | 557 |
} |
| 563 |
return null; |
|
| 558 |
|
|
| 559 |
if ( ret == null ) {
|
|
| 560 |
// |
|
| 561 |
// Por ultimo en el class loader padre, se supone que es el del sistema. |
|
| 562 |
try {
|
|
| 563 |
ret = super.getResource(res); |
|
| 564 |
} catch (Exception e) {
|
|
| 565 |
logger.warn("Plugin {}. Error getting resource '{}' in parent classloader'", new Object[]{this.getPluginName(), res}, e);
|
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| 566 |
} |
|
| 567 |
if ( ret == null ) {
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| 568 |
logger.debug("Plugin {}. Resource '{}' not found.", new Object[]{this.getPluginName(), res});
|
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| 569 |
} |
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| 570 |
} |
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| 571 |
return ret; |
|
| 564 | 572 |
} |
| 573 |
|
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| 565 | 574 |
} |
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