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The core O/RM functionality as provided by Hibernate
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.type;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import org.hibernate.HibernateException;
import org.hibernate.collection.internal.PersistentBag;
import org.hibernate.collection.spi.PersistentCollection;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
import org.hibernate.persister.collection.CollectionPersister;
public class BagType extends CollectionType {
@SuppressWarnings("WeakerAccess")
public BagType(TypeFactory.TypeScope typeScope, String role, String propertyRef) {
super( typeScope, role, propertyRef );
}
@Override
public PersistentCollection instantiate(SharedSessionContractImplementor session, CollectionPersister persister, Serializable key)
throws HibernateException {
return new PersistentBag( session );
}
@Override
public Class getReturnedClass() {
return java.util.Collection.class;
}
@Override
public PersistentCollection wrap(SharedSessionContractImplementor session, Object collection) {
return new PersistentBag( session, (Collection) collection );
}
@Override
public Object instantiate(int anticipatedSize) {
return anticipatedSize <= 0 ? new ArrayList() : new ArrayList( anticipatedSize + 1 );
}
}