[Design the new POJO MicroContainer] - Re: Module.getModuleForClassLoader()
by adrian＠jboss.org
"kabir.khan(a)jboss.com" wrote : Similar to the getModuleForClass() from JBCL-78
| discussed here http://www.jboss.com/index.html?module=bb&op=viewtopic&t=143639&postdays=...
|
| I would like to add an additional method to Module:
|
| | public Module getModuleForClassLoader(ClassLoader cl) throws ClassNotFoundException
| | {
| | SecurityManager sm = System.getSecurityManager();
| | if (sm != null)
| | sm.checkPermission(new RuntimePermission("getClassLoader"));
| |
| | // Determine the module (if any) for the classloader
| | if (cl != null)
| | return modulesByClassLoader.get(cl);
| | // Unknown
| | return null;
| | }
| |
| I need this to initialise my classpool domains with the bootstrap classloaders, since they are not getting picked up by the AOPClassLoaderDeployer in AS.
Ok with me. Your "workaround" looks horrible. :-)
The use of the MC to implement the classloading dependencies is an implemention detail,
it could change without notice.
anonymous wrote :
| I have created an org.jboss.bootstrap.spi.Bootstrap implementation to pick up the classloaders created by the bootstrap deployments.
|
| Next I need a method to get the Module for each classloader so I can push that into the AOP registry. I am not sure if Module is the right place for it, since I have no initiating Module at this stage.
|
I don't mind you adding static query methods to the Module class as long as
they have permissions checks.
In fact, I think the first part of your post would be better implemented by listing
all existing modules at aop initialization?
That way you don't depend upon the specific bootstrap implementation.
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17 years, 2 months
[Javassist development Forum] - CannotCompileExceptio-[source error]: no such class
by leooon
Hi, I am getting 'CannotCompileExceptio-[source error]: no such class: MyAlert' error while making a reference to an static Inner class name 'MyAlert'.
*********below is my code***********
public void addCodeToStartup(String strClass, String classpath){
System.out.println("\tupdating '"+strClass.trim()+"' located at '"+classpath+"' ...");
String cp2 = "";
try{
cp2 = classpath.substring(0, classpath.lastIndexOf('\\'));
System.out.println("\tcp2 '"+cp2);
//String pkg = "";
//pkg = strClass.substring(0, strClass.lastIndexOf('.'));
}catch(StringIndexOutOfBoundsException siobe){
System.out.println("StringIndexOutOfBoundsException: "+siobe.getMessage());
}
//System.out.println("\tpkg '"+pkg+"'");
try {
ClassPool cp = ClassPool.getDefault();
cp.insertClassPath(".");
cp.insertClassPath(cp2+'\\');
cp.insertClassPath(classpath+'\\');
cp.importPackage("javax.microedition.lcdui");
cp.importPackage("javax.microedition.midlet");
cp.importPackage("javax.microedition.rms");
////////////////////////////////////////////////////////////////////////
CtClass cc = cp.get(strClass.trim());
CtClass anInterface = cp.get("javax.microedition.lcdui.CommandListener");
CtClass aSuperClass = cp.get("javax.microedition.lcdui.Alert");
CtClass aUiClass = cc.makeNestedClass("MyAlert", true);
System.out.println("\t1");
aUiClass.setSuperclass(aSuperClass);
aUiClass.addInterface(anInterface);
System.out.println("\t2");
CtField f = CtField.make("Command cmdOk;", aUiClass);
aUiClass.addField(f);
System.out.println("\t3");
f = CtField.make("static MIDlet midlet1;", aUiClass);
aUiClass.addField(f);
System.out.println("\t4");
CtConstructor c = CtNewConstructor.make(
"MyAlert(MIDlet midlet, String info) {"
+"\n super(\"Warning\", info, null, AlertType.WARNING);"
+"\n midlet1 = midlet;"
+"\n cmdOk = new Command(\"OK\", Command.EXIT, 1);"
+"\n addCommand(cmdOk);"
+"\n setCommandListener(this);"
+"\n }",
aUiClass);
aUiClass.addConstructor(c);
System.out.println("\t5");
CtMethod m = CtMethod.make(
"public void commandAction( Command cmd, Displayable displayable){"
+"\n\nif (cmd == cmdOk){"
+"\n midlet1.notifyDestroyed();"
+"\n}"
+"\n}",
aUiClass);
aUiClass.addMethod(m);
System.out.println("\t6");
m = CtMethod.make(
"static MyAlert getMyAlert(MIDlet newMIDlet, String s){"
+"\nreturn new MyAlert(newMIDlet, s);"
+"\n}",
aUiClass
);
aUiClass.addMethod(m);
System.out.println("\t7");
aUiClass.writeFile();
System.out.println("\tMyAlert class created!");
String dest = classpath +'\\'+ aUiClass.getName();
dest = dest.replace('.', '\\');
dest += ".class";
String newClass = aUiClass.getName();
newClass = newClass.replace('.', '\\')+".class";
System.out.println("\tnewClass: "+newClass);
System.out.println("\tdest: "+dest);
File file = null, destFile = null;
file = new File(newClass);
//destFile = new File(dest);
//file.renameTo(destFile);
//if (file.delete())
//System.out.println("\tfile succefull renames and copy is deleted!");
////////////////////////////////////////////////////////////////////////
// MIDlet TO BE MODIFIED //
////////////////////////////////////////////////////////////////////////
m = cc.getDeclaredMethod("startApp");
System.out.println("\t1");
//ADD YOUR startUp code here
m.insertBefore(
"{"
+"\n\n boolean flag=true;"
+"\n byte[] kb=null;"
+"\n\n try {"
+"\n RecordStore settings = RecordStore.openRecordStore(\"Demo\", true);"
+"\n if (settings.getNumRecords() <= 0) {"
+"\n //startTime = System.currentTimeMillis();"
+"\n kb=Long.toString(System.currentTimeMillis()).getBytes();"
+"\n settings.addRecord(kb,0,kb.length);// time in millis"
+"\n byte[] counter={0};"
+"\n settings.addRecord(counter,0,1); // counter"
+"\n flag= true;"
+"\n }"
+"\n\n kb=settings.getRecord(2);"
+"\n kb[0]=(byte)(kb[0]+1);"
+"\n System.out.println(\"value of counter \" + kb[0]);"
+"\n settings.setRecord(2,kb,0,1);"
+"\n\n if(settings.getRecord(2)[0]>2) {"
+"\n flag=false;"
+"\n }"
+"\n\n settings.closeRecordStore();"
+"\n }catch(Exception e) {"
+"\n e.printStackTrace();"
+"\n flag=false;"
+"\n }"
+"\n if(!flag) "
+"\n Display.getDisplay(this).setCurrent(MyAlert.getMyAlert(this, \"Your MIDlet expired, download again\"));"
+"\n else"
+"\n Display.getDisplay(this).setCurrent(MyAlert.getMyAlert(this, \"Still Valid!\"));"
+"\n "
+"}"
);
System.out.println("\tmethod created");
cc.writeFile();
System.out.println("\tYessssss");
}catch (NotFoundException nfe) {
System.out.println("\tNotFoundException: "+nfe.getMessage());
}catch (CannotCompileException cce) {
System.out.println("\tCannotCompileException: "+cce.getMessage());
System.out.println(cce.getReason());
System.out.println(cce.getCause());
}catch (IOException ioe) {
System.out.println("\tIOException: "+ioe.getMessage());
}
}
**********************************
Any sample example how to inject a static InnerClass is appreciated.
Best Regards
Mukesh
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17 years, 2 months
[Design the new POJO MicroContainer] - Re: Module.getModuleForClassLoader()
by kabir.khan＠jboss.com
I've worked around it for now in my AOPBootstrap
| public void start(Server server) throws Exception
| {
| log.debug("Registering bootstrap classloaders with AOP");
| if(server instanceof MCServer)
| {
| MCServer mcserver = MCServer.class.cast(server);
| Map<String, KernelDeployment> serverDeployments = mcserver.getDeployments();
| KernelController controller = mcserver.getKernel().getController();
|
| for(KernelDeployment kd : serverDeployments.values())
| {
| String loaderName = getClassLoaderName(kd);
| if (loaderName == null)
| {
| continue;
| }
| registerClassLoader(controller, loaderName);
| }
| }
| else
| {
| log.warn("Server is not an instance of MCServer. Ignoring bootstrap loaders");
| }
| }
|
| private String getClassLoaderName(KernelDeployment kd)
| {
| ClassLoaderMetaData clmd = kd.getClassLoader();
| if (clmd == null)
| {
| log.debug("No ClassLoaderMetaData for " + kd);
| return null;
| }
| ValueMetaData vmd = clmd.getClassLoader();
| if (vmd == null)
| {
| log.debug("No ValueMetaData for " + clmd + " from " + kd);
| return null;
| }
| Object ldr = vmd.getUnderlyingValue();
| if (ldr == null)
| {
| log.debug("No loader in " + vmd + " for " + clmd + " for " + kd);
| return null;
| }
| if (ldr instanceof String == false)
| {
| log.warn("Loader name " + ldr + " for " + kd + " is not a String");
| }
| return (String)ldr;
| }
|
| private void registerClassLoader(KernelController controller, String name)
| {
| ControllerContext loaderCtx = controller.getContext(name, ControllerState.INSTALLED);
| if (loaderCtx == null)
| {
| throw new IllegalStateException("No classloader found with name " + name);
| }
| ClassLoader loader = (ClassLoader)loaderCtx.getTarget();
| if (loader == null)
| {
| throw new IllegalStateException("Classloader was null " + name);
| }
|
| registerLoaderWithAOP(loader, findModule(controller, loaderCtx));
| }
|
| private Module findModule(KernelController controller, ControllerContext loaderCtx)
| {
| //Figure out the Module from the dependencies
| DependencyInfo info = loaderCtx.getDependencyInfo();
| Set<DependencyItem> loaderDependencies = info.getIDependOn(null);
| Module module = null;
| for (DependencyItem dep : loaderDependencies)
| {
| Object name = dep.getIDependOn();
| ControllerContext candidateCtx = controller.getContext(name, ControllerState.INSTALLED);
| if (candidateCtx.getTarget() instanceof Module)
| {
| if (module != null)
| {
| throw new IllegalStateException("Found more than one Module in the dependencies of " +
| loaderCtx.getName() + ":" + module.getContextName() + " and " + name);
| }
| module = (Module)candidateCtx.getTarget();
| }
| }
|
| if (module == null)
| {
| throw new IllegalStateException("No Module found for loader " + loaderCtx.getName());
| }
|
| return module;
| }
|
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17 years, 2 months