001 /* 002 * JBoss DNA (http://www.jboss.org/dna) 003 * See the COPYRIGHT.txt file distributed with this work for information 004 * regarding copyright ownership. Some portions may be licensed 005 * to Red Hat, Inc. under one or more contributor license agreements. 006 * See the AUTHORS.txt file in the distribution for a full listing of 007 * individual contributors. 008 * 009 * JBoss DNA is free software. Unless otherwise indicated, all code in JBoss DNA 010 * is licensed to you under the terms of the GNU Lesser General Public License as 011 * published by the Free Software Foundation; either version 2.1 of 012 * the License, or (at your option) any later version. 013 * 014 * JBoss DNA is distributed in the hope that it will be useful, 015 * but WITHOUT ANY WARRANTY; without even the implied warranty of 016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 017 * Lesser General Public License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this software; if not, write to the Free 021 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 022 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 023 */ 024 package org.jboss.dna.common.jdbc.model.api; 025 026 import java.util.Set; 027 028 /** 029 * Provides database table's primary key specific metadata. 030 * 031 * @author <a href="mailto:litsenko_sergey@yahoo.com">Sergiy Litsenko</a> 032 */ 033 public interface PrimaryKey extends SchemaObject { 034 035 /** 036 * Retrieves primary key columns 037 * 038 * @return primary key columns 039 */ 040 Set<PrimaryKeyColumn> getColumns(); 041 042 /** 043 * Adds PrimaryKeyColumn 044 * 045 * @param primaryKeyColumn the PrimaryKeyColumn 046 */ 047 void addColumn( PrimaryKeyColumn primaryKeyColumn ); 048 049 /** 050 * deletes PrimaryKeyColumn 051 * 052 * @param primaryKeyColumn the PrimaryKeyColumn 053 */ 054 void deleteColumn( PrimaryKeyColumn primaryKeyColumn ); 055 056 /** 057 * Returns table column for specified column name or null 058 * 059 * @param columnName the name of column 060 * @return table column for specified column name or null. 061 */ 062 PrimaryKeyColumn findColumnByName( String columnName ); 063 064 }