com.blazebit.persistence.criteria.impl.path.AbstractPluralAttributeJoin 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.criteria.impl.path;
import com.blazebit.persistence.criteria.impl.BlazeCriteriaBuilderImpl;
import javax.persistence.criteria.JoinType;
import javax.persistence.criteria.PluralJoin;
import javax.persistence.metamodel.Attribute;
import javax.persistence.metamodel.EntityType;
import javax.persistence.metamodel.ManagedType;
import javax.persistence.metamodel.PluralAttribute;
import javax.persistence.metamodel.Type;
/**
* @author Christian Beikov
* @since 1.2.0
*/
public abstract class AbstractPluralAttributeJoin extends AbstractJoin implements PluralJoin {
private static final long serialVersionUID = 1L;
protected AbstractPluralAttributeJoin(BlazeCriteriaBuilderImpl criteriaBuilder, AbstractJoin original, EntityType treatType) {
super(criteriaBuilder, original, treatType);
}
public AbstractPluralAttributeJoin(BlazeCriteriaBuilderImpl criteriaBuilder, Class javaType, AbstractPath pathSource, Attribute joinAttribute, JoinType joinType) {
super(criteriaBuilder, javaType, pathSource, joinAttribute, joinType);
}
@Override
@SuppressWarnings({"unchecked"})
public PluralAttribute getAttribute() {
return (PluralAttribute) super.getAttribute();
}
public PluralAttribute getModel() {
return getAttribute();
}
@Override
@SuppressWarnings("unchecked")
protected ManagedType getManagedType() {
if (treatJoinType != null) {
return (ManagedType) treatJoinType;
}
return isBasicCollection() ? null : (ManagedType) getAttribute().getElementType();
}
public boolean isBasicCollection() {
return Type.PersistenceType.BASIC.equals(getAttribute().getElementType().getPersistenceType());
}
@Override
protected boolean isDereferencable() {
return !isBasicCollection();
}
@Override
protected boolean isJoinAllowed() {
return !isBasicCollection();
}
}