@SuppressWarnings("unchecked")
private <T> ConcreteEntityDescriptor<T> createConcreteEntityDescriptor(
Class<?> c, EntityDescriptorStore store, Map<Type, Class<?>> types) throws IOException {
// parent of the entity
Class<?> parentClass = c.getSuperclass();
ConcreteEntityDescriptor<?> parent = null;
while (parentClass != null) {
Entity parentAnnotation = parentClass.getAnnotation(Entity.class);
if (parentAnnotation != null) {
parent = createConcreteEntityDescriptor(parentClass, store, types);
break;
}
parentClass = parentClass.getSuperclass();
}
// @Entity
Entity annotation = c.getAnnotation(Entity.class);
InputStream in = null;
try {
// bug 1739760
in = c.getResourceAsStream("/" + c.getName().replace('.', '/') + ".class");
if (in == null) {
throw new IllegalArgumentException("cannot find bytecode for " + c);
}
ClassReader reader = new ClassReader(in);
EntityClassVisitor visitor = new EntityClassVisitor(c, store, types);
reader.accept(visitor, true);
visitor.verify();
// getting the descriptor
EntityDescriptor<?> descriptor = visitor.getDescriptor(parent);
store.put(c, descriptor);
// is this entity inlineable?
if (annotation.inline()) {
if (!descriptor.isInlineable()) {
throw new IllegalArgumentException(
"entity '"
+ descriptor.getReturnedClass()
+ "' is not inlineable."
+ " An entity is inlineable only if it has one property.");
}
}
return (ConcreteEntityDescriptor<T>) descriptor;
} finally {
if (in != null) {
in.close();
}
}
}
