protected PsmMethodAction(Class c, String m, Class[] argArray) {
// This prevents IllegalAccessExceptions when attempting to
// invoke methods on a class that is in another package and not
// defined 'public'.
if (!Modifier.isPublic(c.getModifiers())) {
throw new IllegalPsmMethodActionException("Action class must be public.");
}
try {
method = c.getMethod(m, argArray);
} catch (NoSuchMethodException ex) {
throw new IllegalPsmMethodActionException(ex.toString() + ": method " + m);
}
// Check each exception this method declares thrown. If it declares
// exceptions, and any of them are not runtime exceptions, abort.
Class[] exceptionTypes = method.getExceptionTypes();
for (int i = 0; i < exceptionTypes.length; i++) {
Class exceptionClass = exceptionTypes[i];
if (!RuntimeException.class.isAssignableFrom(exceptionClass)) {
throw new IllegalPsmMethodActionException(
"Method must not declare non-Runtime " + "exceptions.");
}
}
// Ensure that the method returns PsmEvent
if (PsmEvent.class != method.getReturnType()) {
throw new IllegalPsmMethodActionException("Method return type must be PsmEvent");
}
// Ensure that both the method is both public and static.
if (!Modifier.isStatic(method.getModifiers()) || !Modifier.isPublic(method.getModifiers())) {
throw new IllegalPsmMethodActionException("Method " + m + " must be static and public.");
}
}
/**
* Invokes the method specified by a method description.
*
* @param methodDescription the method description of the method that is to be invoked.
*/
protected void invoke(MethodDescription methodDescription) throws InvocationTargetException {
VParamUtil.throwIfNull(methodDescription);
Object o = getObject(methodDescription.getObjectID());
ObjectDescription oDesc = getObjectDescription(o);
if (o == null) {
throw new IllegalStateException("Object must not be null!");
}
if (methodDescription.getMethodType() == MethodType.REFERENCE) {
Object[] parameters = methodDescription.getParameters();
// error handling
if (parameters.length > 1) {
throw new IllegalArgumentException(
"More than one parameter " + "for reference methods is not allowed!");
}
if (parameters.length > 0 && parameters[0] != null) {
methodDescription.setReturnValue(parameters[0]);
} else {
methodDescription.setReturnValue(o);
}
} else if (o instanceof ProxyObject) {
ProxyObject proxy = (ProxyObject) o;
methodDescription.setReturnValue(proxy.invoke(methodDescription));
if (!methodDescription
.getReturnType()
.equals(methodDescription.getReturnValue().getClass())) {
System.err.println(">> ProxyObject: wrong type of return value!");
generateErrorMessage(">> ProxyObject:" + " wrong type of return value!", methodDescription);
}
} else if (methodDescription.getMethodType() == MethodType.DEFAULT
|| methodDescription.getMethodType() == MethodType.CUSTOM_REFERENCE) {
Method m = null;
try {
m =
o.getClass()
.getMethod(
methodDescription.getMethodName(), methodDescription.getParameterTypes());
// access this method even if language visibility forbids
// invocation of this method
m.setAccessible(true);
methodDescription.setReturnValue(m.invoke(o, methodDescription.getParameters()));
} catch (NoSuchMethodException ex) {
Logger.getLogger(ObjectInspector.class.getName()).log(Level.SEVERE, null, ex);
generateErrorMessage(
methodDescription.getMethodName() + "(): " + ex.toString(), methodDescription);
} catch (IllegalAccessException ex) {
Logger.getLogger(ObjectInspector.class.getName()).log(Level.SEVERE, null, ex);
generateErrorMessage(
methodDescription.getMethodName() + "(): " + ex.toString(), methodDescription);
} catch (IllegalArgumentException ex) {
System.err.println(">> ObjectInspector:" + " invoked method with wrong arguments!");
String yourParamStr = "";
String expectedParamStr = "";
if (methodDescription.getParameters() != null) {
for (int i = 0; i < methodDescription.getParameters().length; i++) {
Object parameter = methodDescription.getParameters()[i];
if (parameter != null) {
yourParamStr += parameter.getClass().getName() + " ";
} else {
yourParamStr += "null ";
}
}
} else {
yourParamStr = "no parameters given!";
}
for (int i = 0; i < m.getParameterTypes().length; i++) {
expectedParamStr += m.getParameterTypes()[i].getName() + " ";
}
System.err.println(" your parameters: " + yourParamStr);
System.err.println(" expected parameters: " + expectedParamStr);
generateErrorMessage(
methodDescription.getMethodName() + "(): method invoked with wrong arguments!",
methodDescription);
} catch (InvocationTargetException ex) {
Logger.getLogger(ObjectInspector.class.getName()).log(Level.SEVERE, null, ex);
generateErrorMessage(methodDescription, ex.getCause());
throw ex;
} catch (SecurityException ex) {
Logger.getLogger(ObjectInspector.class.getName()).log(Level.SEVERE, null, ex);
generateErrorMessage(
methodDescription.getMethodName() + "(): " + ex.toString(), methodDescription);
}
} // end else if (o instanceof ProxyObject)
}
/**
* Creates a new aspect container.
*
* @param aspectClass the aspect class
*/
private static AspectContainer createAspectContainer(final Class aspectClass) {
AspectDefinition aspectDefinition = null;
Set definitions =
SystemDefinitionContainer.getRegularAndVirtualDefinitionsFor(aspectClass.getClassLoader());
for (Iterator iterator = definitions.iterator();
iterator.hasNext() && aspectDefinition == null; ) {
SystemDefinition systemDefinition = (SystemDefinition) iterator.next();
for (Iterator iterator1 = systemDefinition.getAspectDefinitions().iterator();
iterator1.hasNext(); ) {
AspectDefinition aspectDef = (AspectDefinition) iterator1.next();
if (aspectClass.getName().replace('/', '.').equals(aspectDef.getClassName())) {
aspectDefinition = aspectDef;
break;
}
}
}
if (aspectDefinition == null) {
throw new Error("Could not find AspectDefinition for " + aspectClass.getName());
}
String containerClassName = aspectDefinition.getContainerClassName();
try {
Class containerClass;
if (containerClassName == null
|| aspectClass.getName().equals(CFlowSystemAspect.CLASS_NAME)) {
containerClass =
ContextClassLoader.loadClass(aspectClass.getClassLoader(), DEFAULT_ASPECT_CONTAINER);
} else {
containerClass =
ContextClassLoader.loadClass(aspectClass.getClassLoader(), containerClassName);
}
Constructor constructor = containerClass.getConstructor(new Class[] {AspectContext.class});
final AspectContext aspectContext =
new AspectContext(
aspectDefinition.getSystemDefinition().getUuid(),
aspectClass,
aspectDefinition.getName(),
DeploymentModel.getDeploymentModelAsInt(aspectDefinition.getDeploymentModel()),
aspectDefinition,
aspectDefinition.getParameters());
final AspectContainer container =
(AspectContainer) constructor.newInstance(new Object[] {aspectContext});
aspectContext.setContainer(container);
return container;
} catch (InvocationTargetException e) {
throw new DefinitionException(e.getTargetException().toString());
} catch (NoSuchMethodException e) {
throw new DefinitionException(
"aspect container does not have a valid constructor ["
+ containerClassName
+ "] need to take an AspectContext instance as its only parameter: "
+ e.toString());
} catch (Throwable e) {
StringBuffer cause = new StringBuffer();
cause.append("could not create aspect container using the implementation specified [");
cause.append(containerClassName);
cause.append("] due to: ");
cause.append(e.toString());
e.printStackTrace();
throw new DefinitionException(cause.toString());
}
}
