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Diffstat (limited to 'branches/sca-java-2.0-M4/modules/binding-ejb-runtime/src/main/java/org/apache/tuscany/sca/binding/ejb/corba/DynamicStubClassLoader.java')
-rw-r--r-- | branches/sca-java-2.0-M4/modules/binding-ejb-runtime/src/main/java/org/apache/tuscany/sca/binding/ejb/corba/DynamicStubClassLoader.java | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/branches/sca-java-2.0-M4/modules/binding-ejb-runtime/src/main/java/org/apache/tuscany/sca/binding/ejb/corba/DynamicStubClassLoader.java b/branches/sca-java-2.0-M4/modules/binding-ejb-runtime/src/main/java/org/apache/tuscany/sca/binding/ejb/corba/DynamicStubClassLoader.java deleted file mode 100644 index 82554a1c8f..0000000000 --- a/branches/sca-java-2.0-M4/modules/binding-ejb-runtime/src/main/java/org/apache/tuscany/sca/binding/ejb/corba/DynamicStubClassLoader.java +++ /dev/null @@ -1,150 +0,0 @@ -/* - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - */ -package org.apache.tuscany.sca.binding.ejb.corba; - -import java.lang.reflect.Method; -import java.lang.reflect.Modifier; - -import javax.rmi.CORBA.Stub; - -import net.sf.cglib.core.NamingPolicy; -import net.sf.cglib.core.Predicate; -import net.sf.cglib.proxy.Callback; -import net.sf.cglib.proxy.CallbackFilter; -import net.sf.cglib.proxy.Enhancer; -import net.sf.cglib.proxy.FixedValue; -import net.sf.cglib.proxy.MethodInterceptor; -import net.sf.cglib.proxy.NoOp; - -/** - * @version $Revision$ $Date$ - */ -public class DynamicStubClassLoader extends ClassLoader { - private static final String PACKAGE_PREFIX = "org.omg.stub."; - - @Override - public synchronized Class loadClass(final String name) throws ClassNotFoundException { - ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); - - // check if the stub already exists first - try { - return classLoader.loadClass(name); - } catch (ClassNotFoundException e) { - } - - // if this is not a class from the org.omg.stub name space don't attempt to generate - if (!name.startsWith(PACKAGE_PREFIX)) { - throw new ClassNotFoundException("Could not load class: " + name); - } - - // load the interfaces class we are attempting to create a stub for - Class iface = loadStubInterfaceClass(name, classLoader); - - // create the stub builder - try { - Enhancer enhancer = new Enhancer(); - enhancer.setSuperclass(Stub.class); - enhancer.setInterfaces(new Class[] {iface}); - enhancer.setCallbackFilter(FILTER); - enhancer.setCallbackTypes(new Class[] {NoOp.class, MethodInterceptor.class, FixedValue.class}); - enhancer.setUseFactory(false); - enhancer.setClassLoader(classLoader); - enhancer.setNamingPolicy(new NamingPolicy() { - public String getClassName(String s, String s1, Object o, Predicate predicate) { - return name; - } - }); - - // generate the class - Class result = enhancer.createClass(); - assert result != null; - - StubMethodInterceptor interceptor = new StubMethodInterceptor(iface); - Ids ids = new Ids(iface); - Enhancer.registerStaticCallbacks(result, new Callback[] {NoOp.INSTANCE, interceptor, ids}); - - return result; - } catch (RuntimeException e) { - throw e; - } catch (Error e) { - throw e; - } - } - - private Class loadStubInterfaceClass(String name, ClassLoader classLoader) throws ClassNotFoundException { - try { - int begin = name.lastIndexOf('.') + 1; - String iPackage = name.substring(13, begin); - String iName = iPackage + name.substring(begin + 1, name.length() - 5); - - return classLoader.loadClass(iName); - } catch (ClassNotFoundException e) { - // don't log exceptions from CosNaming because it attempts to load every - // class bound into the name server - - //FIXME this variable is never read, can we remove the - // whole block of code?? - //boolean shouldLog = true; - StackTraceElement[] stackTrace = e.getStackTrace(); - for (int i = 0; i < stackTrace.length; i++) { - StackTraceElement stackTraceElement = stackTrace[i]; - if (stackTraceElement.getClassName().equals("org.omg.CosNaming.NamingContextExtPOA") && stackTraceElement - .getMethodName().equals("_invoke")) { - //shouldLog = false; - break; - } - } - - throw new ClassNotFoundException("Unable to generate stub", e); - } - } - - private static final CallbackFilter FILTER = new CallbackFilter() { - public int accept(Method method) { - // we don't intercept non-public methods like finalize - if (!Modifier.isPublic(method.getModifiers())) { - return 0; - } - - if (method.getReturnType().equals(String[].class) && method.getParameterTypes().length == 0 - && method.getName().equals("_ids")) { - return 2; - } - - if (Modifier.isAbstract(method.getModifiers())) { - return 1; - } - - return 0; - } - }; - - private static final class Ids implements FixedValue { - private final String[] typeIds; - - public Ids(Class type) { - typeIds = Java2IDLUtil.createCorbaIds(type); - } - - public Object loadObject() throws Exception { - return typeIds; - } - } - -} |