cachedatadescriptionimpl.java

一个Java持久层类库

package org.hibernate.cache.impl;

import java.util.Comparator;

import org.hibernate.cache.CacheDataDescription;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.mapping.Collection;
import org.hibernate.type.VersionType;

/**
 * {@inheritDoc}
 *
 * @author Steve Ebersole
 */
public class CacheDataDescriptionImpl implements CacheDataDescription {
	private final boolean mutable;
	private final boolean versioned;
	private final Comparator versionComparator;

	public CacheDataDescriptionImpl(boolean mutable, boolean versioned, Comparator versionComparator) {
		this.mutable = mutable;
		this.versioned = versioned;
		this.versionComparator = versionComparator;
	}

	public boolean isMutable() {
		return mutable;
	}

	public boolean isVersioned() {
		return versioned;
	}

	public Comparator getVersionComparator() {
		return versionComparator;
	}

	public static CacheDataDescriptionImpl decode(PersistentClass model) {
		return new CacheDataDescriptionImpl(
				model.isMutable(),
				model.isVersioned(),
				model.isVersioned() ? ( ( VersionType ) model.getVersion().getType() ).getComparator() : null
		);
	}

	public static CacheDataDescriptionImpl decode(Collection model) {
		return new CacheDataDescriptionImpl(
				model.isMutable(),
				model.getOwner().isVersioned(),
				model.getOwner().isVersioned() ? ( ( VersionType ) model.getOwner().getVersion().getType() ).getComparator() : null
		);
	}
}