org.exolab.castor.xml.wls8.WeblogicXercesImplementation Maven / Gradle / Ivy
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The core XML data binding framework with support for marshalling Java objects to
and unmarshalling from XML documents.
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/*
* Copyright 2006 Thierry Guerin
*
* Licensed 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.exolab.castor.xml.wls8;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public abstract class WeblogicXercesImplementation {
private static final Log LOG = LogFactory.getLog(WeblogicXercesImplementation.class);
/**
* Returns a Method object that reflects the specified public member method of the class or
* interface represented by aClass
.
* If either an SecurityException or NoSuchMethodException is thrown, calls
* {@link #handleStaticInitException(Exception)}.
*
* @param aClass The class.
* @param methodName The name of the method.
* @param parameterTypes The list of parameters.
* @return The Method object that matches the specified name and parameterTypes.
* @see Class#getMethod(java.lang.String, java.lang.Class[])
*/
protected static Method getMethod(Class aClass, String methodName, Class[] parameterTypes) {
Method method = null;
try {
method = aClass.getMethod(methodName, parameterTypes);
} catch (SecurityException e) {
handleStaticInitException(
"Error while trying to get the method " + methodName + " in class " + aClass, e);
} catch (NoSuchMethodException e) {
handleStaticInitException(
"Error while trying to get the method " + methodName + " in class " + aClass, e);
}
return method;
}
/**
* Invokes a method. Calls {@link Method#invoke(java.lang.Object, java.lang.Object[])}. If either
* an IllegalArgumentException, IllegalAccessException or InvocationTargetException is thrown,
* calls {@link #handleMethodInvokeException(Exception)}.
*
* @param anObject The object instance to invoke the method on.
* @param method The method to invoke.
* @param params The parameters to pass to the method.
* @return If the method completes normally, the value it returns is returned to the caller of
* invoke; if the value has a primitive type, it is first appropriately wrapped in an
* object. If the underlying method return type is void, the invocation returns null.
* @see Method#invoke(java.lang.Object, java.lang.Object[])
*/
protected Object invoke(Object anObject, Method method, Object[] params) {
try {
return method.invoke(anObject, params);
} catch (IllegalArgumentException e) {
handleMethodInvokeException(e);
} catch (IllegalAccessException e) {
handleMethodInvokeException(e);
} catch (InvocationTargetException e) {
handleMethodInvokeException(e);
}
// this code is never reached in theory but is necessary because handleMethodInvokeException
// throws a RuntimeException (unchecked).
return null;
}
// exception handling methods
public static void handleStaticInitException(Exception e) {
handleStaticInitException("Error while intializing class", e);
}
/**
* Throws a Runtime exception with e
's {@link Exception#getMessage() message} as its
* detail message. Also logs the exception as an error. Called if an error occurs during the
* static initialization of WeblogicXercesSerializer & OutputFormat (these classes use reflection
* to get the Weblogic classes & methods).
*
* @param message The Message that will be inserted before e
's
* {@link Exception#getMessage() message} in the RuntimeException's detail message.
* @param e The exception that will be "wrapped" in a RuntimeException
*/
public static void handleStaticInitException(String message, Exception e) {
LOG.error(message, e);
if (e instanceof RuntimeException) // don't wrap the exception
throw (RuntimeException) e;
throw new RuntimeException(message + ". " + e.getMessage()); // java 1.3, can't wrap using the
// 1.4 constructor
}
protected static void handleMethodInvokeException(Exception e) {
handleMethodInvokeException("Error while trying to invoke a method", e);
}
/**
* Throws a Runtime exception with e
's {@link Exception#getMessage() message} as its
* detail message. Also logs the exception as an error.
*
* @param message The Message that will be inserted before e
's
* {@link Exception#getMessage() message} in the RuntimeException's detail message.
* @param e The exception that will be "wrapped" in a RuntimeException.
*/
protected static void handleMethodInvokeException(String message, Exception e) {
LOG.error(message, e);
if (e instanceof RuntimeException) // don't wrap the exception
throw (RuntimeException) e;
throw new RuntimeException(message + ". " + e.getMessage()); // java 1.3, can't wrap using the
// 1.4 constructor
}
}