org.sql.generation.api.grammar.definition.table.UniqueConstraint Maven / Gradle / Ivy
/*
* Copyright (c) 2010, Stanislav Muhametsin. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.sql.generation.api.grammar.definition.table;
import org.sql.generation.api.grammar.common.ColumnNameList;
/**
* This constraint defines the columns to be unique ({@code UNIQUE(col1, col2, ...)}).
*
* @author Stanislav Muhametsin
*/
public interface UniqueConstraint
extends TableConstraint
{
/**
* Returns the kind of uniqueness: either primary key constraint ({@code PRIMARY KEY}), or normal uniqueness
* constraint ({@code UNIQUE}).
*
* @return The kind of uniqueness.
* @see UniqueSpecification
*/
public UniqueSpecification getUniquenessKind();
/**
* Returns the names of columns that are unique.
*
* @return The names of columns that are unique.
*/
public ColumnNameList getColumnNameList();
}