001/* 002 * HA-JDBC: High-Availability JDBC 003 * Copyright (c) 2004-2007 Paul Ferraro 004 * 005 * This library is free software; you can redistribute it and/or modify it 006 * under the terms of the GNU Lesser General Public License as published by the 007 * Free Software Foundation; either version 2.1 of the License, or (at your 008 * option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, but WITHOUT 011 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 012 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 013 * for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public License 016 * along with this library; if not, write to the Free Software Foundation, 017 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 018 * 019 * Contact: ferraro@users.sourceforge.net 020 */ 021package net.sf.hajdbc.dialect; 022 023import java.sql.DatabaseMetaData; 024import java.sql.ResultSet; 025import java.sql.SQLException; 026import java.sql.Statement; 027import java.util.Collection; 028import java.util.LinkedList; 029import java.util.List; 030 031import net.sf.hajdbc.QualifiedName; 032 033/** 034 * Dialect for DB2 (commercial). 035 * @author Paul Ferraro 036 * @since 1.1 037 */ 038@SuppressWarnings("nls") 039public class DB2Dialect extends StandardDialect 040{ 041 /** 042 * @see net.sf.hajdbc.dialect.StandardDialect#executeFunctionFormat() 043 */ 044 @Override 045 protected String executeFunctionFormat() 046 { 047 return "VALUES {0}"; 048 } 049 050 /** 051 * @see net.sf.hajdbc.dialect.StandardDialect#getSequences(java.sql.DatabaseMetaData) 052 */ 053 @Override 054 public Collection<QualifiedName> getSequences(DatabaseMetaData metaData) throws SQLException 055 { 056 List<QualifiedName> sequenceList = new LinkedList<QualifiedName>(); 057 058 Statement statement = metaData.getConnection().createStatement(); 059 060 ResultSet resultSet = statement.executeQuery("SELECT SEQSCHEMA, SEQNAME FROM SYSCAT.SEQUENCES"); 061 062 while (resultSet.next()) 063 { 064 sequenceList.add(new QualifiedName(resultSet.getString(1), resultSet.getString(2))); 065 } 066 067 statement.close(); 068 069 return sequenceList; 070 } 071 072 /** 073 * @see net.sf.hajdbc.dialect.StandardDialect#sequencePattern() 074 */ 075 @Override 076 protected String sequencePattern() 077 { 078 return "(?:NEXT|PREV)VAL\\s+FOR\\s+'?([^',\\s\\(\\)]+)"; 079 } 080 081 /** 082 * @see net.sf.hajdbc.dialect.StandardDialect#nextSequenceValueFormat() 083 */ 084 @Override 085 protected String nextSequenceValueFormat() 086 { 087 return "NEXTVAL FOR {0}"; 088 } 089 090 /** 091 * @see net.sf.hajdbc.dialect.StandardDialect#dateLiteralFormat() 092 */ 093 @Override 094 protected String dateLiteralFormat() 095 { 096 return this.timestampLiteralFormat(); 097 } 098 099 /** 100 * @see net.sf.hajdbc.dialect.StandardDialect#timeLiteralFormat() 101 */ 102 @Override 103 protected String timeLiteralFormat() 104 { 105 return this.timestampLiteralFormat(); 106 } 107 108 /** 109 * @see net.sf.hajdbc.dialect.StandardDialect#timestampLiteralFormat() 110 */ 111 @Override 112 protected String timestampLiteralFormat() 113 { 114 return "''{0}''"; 115 } 116}