/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.isis.progmodel.wrapper.metamodel.internal;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import org.apache.isis.applib.events.CollectionMethodEvent;
import org.apache.isis.applib.events.InteractionEvent;
import org.apache.isis.core.metamodel.spec.feature.OneToManyAssociation;
abstract class AbstractCollectionInvocationHandler<T, C> extends DelegatingInvocationHandlerDefault<C> {
private final List<Method> interceptedMethods = new ArrayList<Method>();
private final List<Method> vetoedMethods = new ArrayList<Method>();
private final String collectionName;
private final OneToManyAssociation oneToManyAssociation;
private final T domainObject;
public AbstractCollectionInvocationHandler(final C collectionOrMapToProxy, final String collectionName, final DomainObjectInvocationHandler<T> handler, final OneToManyAssociation otma) {
super(collectionOrMapToProxy, handler.getHeadlessViewer(), handler.getExecutionMode());
this.collectionName = collectionName;
this.oneToManyAssociation = otma;
this.domainObject = handler.getDelegate();
}
protected Method intercept(final Method method) {
this.interceptedMethods.add(method);
return method;
}
protected Method veto(final Method method) {
this.vetoedMethods.add(method);
return method;
}
public String getCollectionName() {
return collectionName;
}
public OneToManyAssociation getCollection() {
return oneToManyAssociation;
}
public T getDomainObject() {
return domainObject;
}
@Override
public Object invoke(final Object collectionObject, final Method method, final Object[] args) throws Throwable {
// delegate
final Object returnValueObj = delegate(method, args);
if (interceptedMethods.contains(method)) {
resolveIfRequired(domainObject);
final InteractionEvent ev = new CollectionMethodEvent(getDelegate(), getCollection().getIdentifier(), getDomainObject(), method.getName(), args, returnValueObj);
notifyListeners(ev);
return returnValueObj;
}
if (vetoedMethods.contains(method)) {
throw new UnsupportedOperationException(String.format("Method '%s' may not be called directly.", method.getName()));
}
return returnValueObj;
}
}