org.hibernate.mapping.UniqueKey Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, 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.mapping;
import org.hibernate.dialect.Dialect;
import org.hibernate.engine.spi.Mapping;
/**
* A relational unique key constraint
*
* @author Brett Meyer
*/
public class UniqueKey extends Constraint {
@Override
public String sqlConstraintString(
Dialect dialect,
String constraintName,
String defaultCatalog,
String defaultSchema) {
// return dialect.getUniqueDelegate().uniqueConstraintSql( this );
// Not used.
return "";
}
@Override
public String sqlCreateString(Dialect dialect, Mapping p,
String defaultCatalog, String defaultSchema) {
return dialect.getUniqueDelegate().applyUniquesOnAlter(
this, defaultCatalog, defaultSchema );
}
@Override
public String sqlDropString(Dialect dialect, String defaultCatalog,
String defaultSchema) {
return dialect.getUniqueDelegate().dropUniquesOnAlter(
this, defaultCatalog, defaultSchema );
}
public String generatedConstraintNamePrefix() {
return "UK_";
}
}