/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008-2011, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.cache.internal;
import java.util.Comparator;
import org.hibernate.cache.spi.CacheDataDescription;
import org.hibernate.mapping.Collection;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.metamodel.binding.EntityBinding;
import org.hibernate.metamodel.binding.PluralAttributeBinding;
import org.hibernate.type.VersionType;
/**
* Standard CacheDataDescription implementation.
*
* @author Steve Ebersole
*/
public class CacheDataDescriptionImpl implements CacheDataDescription {
private final boolean mutable;
private final boolean versioned;
private final Comparator versionComparator;
/**
* Constructs a CacheDataDescriptionImpl instance. Generally speaking, code should use one of the
* overloaded {@link #decode} methods rather than direct instantiation.
*
* @param mutable Is the described data mutable?
* @param versioned Is the described data versioned?
* @param versionComparator The described data's version value comparator (if versioned).
*/
public CacheDataDescriptionImpl(boolean mutable, boolean versioned, Comparator versionComparator) {
this.mutable = mutable;
this.versioned = versioned;
this.versionComparator = versionComparator;
}
@Override
public boolean isMutable() {
return mutable;
}
@Override
public boolean isVersioned() {
return versioned;
}
@Override
public Comparator getVersionComparator() {
return versionComparator;
}
/**
* Builds a CacheDataDescriptionImpl from the mapping model of an entity class.
*
* @param model The mapping model.
*
* @return The constructed CacheDataDescriptionImpl
*/
public static CacheDataDescriptionImpl decode(PersistentClass model) {
return new CacheDataDescriptionImpl(
model.isMutable(),
model.isVersioned(),
model.isVersioned()
? ( (VersionType) model.getVersion().getType() ).getComparator()
: null
);
}
/**
* Builds a CacheDataDescriptionImpl from the mapping model of an entity class (using the new metamodel code).
*
* @param model The mapping model.
*
* @return The constructed CacheDataDescriptionImpl
*/
public static CacheDataDescriptionImpl decode(EntityBinding model) {
return new CacheDataDescriptionImpl( model.isMutable(), model.isVersioned(), getVersionComparator( model ) );
}
/**
* Builds a CacheDataDescriptionImpl from the mapping model of a collection
*
* @param model The mapping model.
*
* @return The constructed CacheDataDescriptionImpl
*/
public static CacheDataDescriptionImpl decode(Collection model) {
return new CacheDataDescriptionImpl(
model.isMutable(),
model.getOwner().isVersioned(),
model.getOwner().isVersioned()
? ( (VersionType) model.getOwner().getVersion().getType() ).getComparator()
: null
);
}
/**
* Builds a CacheDataDescriptionImpl from the mapping model of a collection (using the new metamodel code).
*
* @param model The mapping model.
*
* @return The constructed CacheDataDescriptionImpl
*/
public static CacheDataDescriptionImpl decode(PluralAttributeBinding model) {
return new CacheDataDescriptionImpl(
model.isMutable(),
model.getContainer().seekEntityBinding().isVersioned(),
getVersionComparator( model.getContainer().seekEntityBinding() )
);
}
private static Comparator getVersionComparator(EntityBinding model ) {
if ( model.isVersioned() ) {
final VersionType versionType = (VersionType) model.getHierarchyDetails()
.getVersioningAttributeBinding()
.getHibernateTypeDescriptor()
.getResolvedTypeMapping();
return versionType.getComparator();
}
return null;
}
}