com.blazebit.persistence.impl.ManagedEntityAssociationParameterTransformerFactory Maven / Gradle / Ivy
/*
* Copyright 2014 - 2020 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.impl;
import javax.persistence.EntityManager;
import javax.persistence.Query;
/**
* @author Christian Beikov
* @since 1.2.0
*/
public class ManagedEntityAssociationParameterTransformerFactory implements AssociationParameterTransformerFactory {
private final EntityManager em;
private final ParameterValueTransformer toIdParameterTransformer;
public ManagedEntityAssociationParameterTransformerFactory(EntityManager em, ParameterValueTransformer toIdParameterTransformer) {
this.em = em;
this.toIdParameterTransformer = toIdParameterTransformer;
}
@Override
public ParameterValueTransformer getToEntityTranformer(final Class entityType) {
return new ParameterValueTransformer() {
@Override
public ParameterValueTransformer forQuery(Query query) {
return this;
}
@Override
public Object transform(Object originalValue) {
return em.getReference(entityType, originalValue);
}
};
}
@Override
public ParameterValueTransformer getToIdTransformer() {
return toIdParameterTransformer;
}
}