/*
* Copyright 2014 - 2017 Blazebit.
*
* 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 com.blazebit.persistence.view.impl.update.flush;
import java.util.Collection;
import javax.persistence.Query;
import com.blazebit.persistence.view.impl.collection.RecordingCollection;
import com.blazebit.reflection.PropertyPathExpression;
public class CollectionAttributeFlusher<E, V extends Collection<?>> implements DirtyAttributeFlusher<E, V> {
private final PropertyPathExpression<E, Collection<?>> propertyPath;
@SuppressWarnings("unchecked")
public CollectionAttributeFlusher(PropertyPathExpression<E, ? extends Collection<?>> propertyPath) {
this.propertyPath = (PropertyPathExpression<E, Collection<?>>) propertyPath;
}
@Override
public boolean supportsQueryFlush() {
return false;
}
@Override
public void flushQuery(Query query, V value) {
throw new UnsupportedOperationException();
}
@Override
@SuppressWarnings("unchecked")
public void flushEntity(E entity, V value) {
if (value instanceof RecordingCollection<?, ?>) {
((RecordingCollection<Collection<?>, ?>) value).replay(propertyPath.getValue(entity));
} else {
propertyPath.setValue(entity, value);
}
}
}