/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* Licensed 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.keycloak.connections.jpa;
import org.hibernate.exception.ConstraintViolationException;
import org.keycloak.models.ModelDuplicateException;
import org.keycloak.models.ModelException;
import javax.persistence.EntityExistsException;
import javax.persistence.EntityManager;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
/**
* @author <a href="mailto:sthorger@redhat.com">Stian Thorgersen</a>
*/
public class PersistenceExceptionConverter implements InvocationHandler {
private EntityManager em;
public static EntityManager create(EntityManager em) {
return (EntityManager) Proxy.newProxyInstance(EntityManager.class.getClassLoader(), new Class[]{EntityManager.class}, new PersistenceExceptionConverter(em));
}
private PersistenceExceptionConverter(EntityManager em) {
this.em = em;
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
try {
return method.invoke(em, args);
} catch (InvocationTargetException e) {
throw convert(e.getCause());
}
}
public static ModelException convert(Throwable t) {
if (t.getCause() != null && t.getCause() instanceof ConstraintViolationException) {
throw new ModelDuplicateException(t);
} if (t instanceof EntityExistsException || t instanceof ConstraintViolationException) {
throw new ModelDuplicateException(t);
} else {
throw new ModelException(t);
}
}
}