com.blazebit.persistence.impl.TransientEntityAssociationParameterTransformerFactory 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 com.blazebit.persistence.parser.EntityMetamodel;
import com.blazebit.persistence.parser.util.JpaMetamodelUtils;
import javax.persistence.metamodel.Attribute;
import javax.persistence.metamodel.IdentifiableType;
/**
* @author Christian Beikov
* @since 1.2.0
*/
public class TransientEntityAssociationParameterTransformerFactory implements AssociationParameterTransformerFactory {
private final EntityMetamodel metamodel;
private final AssociationToIdParameterTransformer toIdParameterTransformer;
public TransientEntityAssociationParameterTransformerFactory(EntityMetamodel metamodel, AssociationToIdParameterTransformer toIdParameterTransformer) {
this.metamodel = metamodel;
this.toIdParameterTransformer = toIdParameterTransformer;
}
@Override
public ParameterValueTransformer getToEntityTranformer(Class entityType) {
IdentifiableType managedType = (IdentifiableType) metamodel.getManagedType(entityType);
Attribute idAttribute = JpaMetamodelUtils.getSingleIdAttribute(managedType);
return AssociationFromIdParameterTransformer.getInstance(entityType, idAttribute);
}
@Override
public ParameterValueTransformer getToIdTransformer() {
return toIdParameterTransformer;
}
}