/**
* Adds the mixin field to the target class.
*
* @param fieldInfo
* @param deploymentModel
* @param mixinDef
*/
private void addMixinField(
final MixinFieldInfo fieldInfo,
final DeploymentModel deploymentModel,
final MixinDefinition mixinDef) {
final String signature = fieldInfo.mixinClassInfo.getSignature();
int modifiers = 0;
if (deploymentModel.equals(DeploymentModel.PER_CLASS)
|| deploymentModel.equals(DeploymentModel.PER_JVM)) {
fieldInfo.isStatic = true;
fieldInfo.isPerJVM = deploymentModel.equals(DeploymentModel.PER_JVM);
modifiers = ACC_PRIVATE + ACC_FINAL + ACC_STATIC + ACC_SYNTHETIC;
} else if (deploymentModel.equals(DeploymentModel.PER_INSTANCE)) {
fieldInfo.isStatic = false;
modifiers = ACC_PRIVATE + ACC_FINAL + ACC_SYNTHETIC;
} else {
throw new DefinitionException(
"deployment model ["
+ mixinDef.getDeploymentModel()
+ "] for mixin ["
+ mixinDef.getMixinImpl().getName()
+ "] is not supported");
}
if (mixinDef.isTransient()) {
modifiers += ACC_TRANSIENT;
}
cv.visitField(modifiers, fieldInfo.fieldName, signature, null, null);
m_mixinFields.put(mixinDef.getMixinImpl(), fieldInfo);
}
/**
* Create a new introduction
*
* @param name of this introduction - by convention the AspectClassFQN $ InnerClass
* @param implClass
* @param aspectContext which defines this mixin
* @param definition
*/
public Introduction(
final String name,
final Class implClass,
final AspectContext aspectContext,
final IntroductionDefinition definition) {
m_name = name;
m_aspectContext = aspectContext;
m_definition = definition;
m_mixinImplClass = implClass;
m_mixinConstructor = findConstructor();
ARRAY_WITH_CROSS_CUTTING_INFO[0] = m_aspectContext;
// handle deploymentModel dependancies
// defaults to Aspect deploymentModel
// else supported models are:
// Mixin Aspect
// perJVM perJVM
// perClass perJVM,perClass
// perInstance perJVM,perClass,perInstance
// perThread perThread
// todo all those checks should be done earlier
// (AspectC thought doclet inheritance might cause problem when inheritating compiled
// aspects without source
// code)
if (definition.getDeploymentModel() == null) {
m_deploymentModel = m_aspectContext.getDeploymentModel();
} else {
int model = DeploymentModel.getDeploymentModelAsInt(definition.getDeploymentModel());
if (DeploymentModel.isMixinDeploymentModelCompatible(
model, m_aspectContext.getDeploymentModel())) {
m_deploymentModel = model;
} else {
throw new RuntimeException(
"could no create mixin from aspect: incompatible deployment models : mixin "
+ DeploymentModel.getDeploymentModelAsString(model)
+ " with aspect "
+ DeploymentModel.getDeploymentModelAsString(m_aspectContext.getDeploymentModel()));
}
}
}
/**
* 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());
}
}
