//$Id: CacheKey.java 11500 2007-05-09 17:36:08Z [email protected] $
package org.hibernate.cache;
import java.io.Serializable;
import org.hibernate.EntityMode;
import org.hibernate.engine.SessionFactoryImplementor;
import org.hibernate.type.Type;
/**
* Allows multiple entity classes / collection roles to be
* stored in the same cache region. Also allows for composite
* keys which do not properly implement equals()/hashCode().
*
* @author Gavin King
*/
public class CacheKey implements Serializable {
private final Serializable key;
private final Type type;
private final String entityOrRoleName;
private final EntityMode entityMode;
private final int hashCode;
/**
* Construct a new key for a collection or entity instance.
* Note that an entity name should always be the root entity
* name, not a subclass entity name.
*
* @param id The identifier associated with the cached data
* @param type The Hibernate type mapping
* @param entityOrRoleName The entity or collection-role name.
* @param entityMode The entiyt mode of the originating session
* @param factory The session factory for which we are caching
*/
public CacheKey(
final Serializable id,
final Type type,
final String entityOrRoleName,
final EntityMode entityMode,
final SessionFactoryImplementor factory) {
this.key = id;
this.type = type;
this.entityOrRoleName = entityOrRoleName;
this.entityMode = entityMode;
hashCode = type.getHashCode( key, entityMode, factory );
}
//Mainly for OSCache
public String toString() {
return entityOrRoleName + '#' + key.toString();//"CacheKey#" + type.toString(key, sf);
}
public boolean equals(Object other) {
if ( !(other instanceof CacheKey) ) return false;
CacheKey that = (CacheKey) other;
return entityOrRoleName.equals( that.entityOrRoleName )
&& type.isEqual( key, that.key, entityMode );
}
public int hashCode() {
return hashCode;
}
public Serializable getKey() {
return key;
}
public String getEntityOrRoleName() {
return entityOrRoleName;
}
}
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