private void addAssociationToTarget(String name, Object target, Object obj) {
if (obj == null) {
return;
}
MetaClassRegistry reg = GroovySystem.getMetaClassRegistry();
MetaClass mc = reg.getMetaClass(target.getClass());
final String addMethodName = "addTo" + GrailsNameUtils.getClassNameRepresentation(name);
mc.invokeMethod(target, addMethodName, obj);
}
public static MetaClassRegistryCleaner createAndRegister() {
MetaClassRegistry metaClassRegistry = GroovySystem.getMetaClassRegistry();
MetaClassRegistryChangeEventListener[] listeners =
metaClassRegistry.getMetaClassRegistryChangeEventListeners();
boolean registered = false;
for (MetaClassRegistryChangeEventListener listener : listeners) {
if (listener == INSTANCE) {
registered = true;
break;
}
}
if (!registered) {
GroovySystem.getMetaClassRegistry().addMetaClassRegistryChangeEventListener(INSTANCE);
}
return INSTANCE;
}
@SuppressWarnings("rawtypes")
public static MetaClass getExpandoMetaClass(Class clazz) {
MetaClassRegistry registry = GroovySystem.getMetaClassRegistry();
Assert.isTrue(
registry.getMetaClassCreationHandler() instanceof ExpandoMetaClassCreationHandle,
"Grails requires an instance of [ExpandoMetaClassCreationHandle] to be set in Groovy's MetaClassRegistry! (current is : "
+ registry.getMetaClassCreationHandler()
+ ")");
MetaClass mc = registry.getMetaClass(clazz);
AdaptingMetaClass adapter = null;
if (mc instanceof AdaptingMetaClass) {
adapter = (AdaptingMetaClass) mc;
mc = ((AdaptingMetaClass) mc).getAdaptee();
}
if (!(mc instanceof ExpandoMetaClass)) {
// removes cached version
registry.removeMetaClass(clazz);
mc = registry.getMetaClass(clazz);
if (adapter != null) {
adapter.setAdaptee(mc);
}
}
Assert.isTrue(
mc instanceof ExpandoMetaClass,
"BUG! Method must return an instance of [ExpandoMetaClass]!");
return mc;
}