org.fryske_akademy.ejb.EntityException Maven / Gradle / Ivy
/*
* Copyright 2018 Fryske Akademy.
*
* 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.fryske_akademy.ejb;
import java.util.Optional;
import javax.persistence.PersistenceException;
import org.fryske_akademy.jpa.EntityInterface;
/**
* An Exception that tracks the entity that caused the failure, useful for
* example the combination of EntityListeners and batch operations.
*
* @see CrudWriteService#batchSave(java.util.Collection, java.lang.Integer)
* @see CrudWriteService#batchDelete(java.util.Collection, java.lang.Integer)
* @author eduard
*/
public class EntityException extends PersistenceException {
/**
* get hold of an entity in the exception chain.
* @param ex
* @return
*/
public static Optional fromException(Throwable ex) {
if (ex instanceof EntityException) {
return Optional.of(((EntityException)ex).failed);
} else if (ex == null) {
return Optional.empty();
}
return fromException(ex.getCause());
}
private final EntityInterface failed;
public EntityException(EntityInterface failed) {
this.failed = failed;
}
public EntityException(EntityInterface failed, String message) {
super(message);
this.failed = failed;
}
public EntityException(EntityInterface failed, Exception ex) {
super(ex);
this.failed = failed;
}
public EntityException(EntityInterface failed, String message, Exception ex) {
super(message, ex);
this.failed = failed;
}
public EntityInterface getFailed() {
return failed;
}
}