/*
* (c) Copyright 2006 by Volker Bergmann. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, is permitted under the terms of the
* GNU General Public License.
*
* For redistributing this software or a derivative work under a license other
* than the GPL-compatible Free Software License as defined by the Free
* Software Foundation or approved by OSI, you must first obtain a commercial
* license to this software product from Volker Bergmann.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
* REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
* HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package org.databene.platform.db.model;
import java.util.List;
import java.util.Arrays;
/**
* Represents a unique constraint on one or the combination of several columns of one table.<br/>
* <br/>
* Created: 06.01.2007 09:00:37
*/
public class DBUniqueConstraint extends DBConstraint {
private List<DBColumn> columns;
/**
* @param name the constraint name - it may be null
* @param columns the DBColumns to which the constraint is applied
*/
public DBUniqueConstraint(String name, DBColumn ... columns) {
super(name);
this.columns = Arrays.asList(columns);
}
public DBTable getOwner() {
return columns.get(0).getTable();
}
public DBColumn[] getColumns() {
DBColumn[] array = new DBColumn[columns.size()];
return columns.toArray(array);
}
public void addColumn(DBColumn column) {
columns.add(column);
}
public void removeColumn(DBColumn column) {
columns.remove(column);
}
}
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