org.hibernate.id.PersistentIdentifierGenerator Maven / Gradle / Ivy
/*
* 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.id;
import org.hibernate.HibernateException;
import org.hibernate.dialect.Dialect;
/**
* An IdentifierGenerator that requires creation of database objects.
*
* All PersistentIdentifierGenerators that also implement
* Configurable have access to a special mapping parameter: schema
*
* @see IdentifierGenerator
* @see Configurable
* @author Gavin King
*/
public interface PersistentIdentifierGenerator extends IdentifierGenerator {
/**
* The configuration parameter holding the schema name
*/
public static final String SCHEMA = "schema";
/**
* The configuration parameter holding the table name for the
* generated id
*/
public static final String TABLE = "target_table";
/**
* The configuration parameter holding the table names for all
* tables for which the id must be unique
*/
public static final String TABLES = "identity_tables";
/**
* The configuration parameter holding the primary key column
* name of the generated id
*/
public static final String PK = "target_column";
/**
* The configuration parameter holding the catalog name
*/
public static final String CATALOG = "catalog";
/**
* The key under whcih to find the {@link org.hibernate.cfg.ObjectNameNormalizer} in the config param map.
*/
public static final String IDENTIFIER_NORMALIZER = "identifier_normalizer";
/**
* The SQL required to create the underlying database objects.
*
* @param dialect The dialect against which to generate the create command(s)
* @return The create command(s)
* @throws HibernateException problem creating the create command(s)
*/
public String[] sqlCreateStrings(Dialect dialect) throws HibernateException;
/**
* The SQL required to remove the underlying database objects.
*
* @param dialect The dialect against which to generate the drop command(s)
* @return The drop command(s)
* @throws HibernateException problem creating the drop command(s)
*/
public String[] sqlDropStrings(Dialect dialect) throws HibernateException;
/**
* Return a key unique to the underlying database objects. Prevents us from
* trying to create/remove them multiple times.
*
* @return Object an identifying key for this generator
*/
public Object generatorKey();
}