001/* 
002 * JKNIV, whinstone one contract to access your database.
003 * 
004 * Copyright (C) 2017, the original author or authors.
005 *
006 * This library is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 2.1 of the License.
010 * 
011 * This library is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014 * Lesser General Public License for more details.
015 * 
016 * You should have received a copy of the GNU Lesser General Public
017 * License along with this library; if not, write to the Free Software Foundation, Inc., 
018 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
019 */
020package net.sf.jkniv.whinstone.jdbc.dialect;
021
022import net.sf.jkniv.sqlegance.dialect.AnsiDialect;
023import net.sf.jkniv.sqlegance.dialect.SqlFeatureFactory;
024import net.sf.jkniv.sqlegance.dialect.SqlFeatureSupport;
025
026/**
027 * Dialect to MYSQL
028 * 
029 * <p>
030 * Limit clause:
031 *  <code>select name from author LIMIT 1 OFFSET 2</code>
032 * </p>
033 * 
034 * <ul>
035 *  <li>Supports limits? true</li>
036 *  <li>Supports limit off set? true</li>
037 *  <li>Supports rownum? false</li>
038 * </ul>
039 *
040 * @author Alisson Gomes 
041 * @since 0.6.0
042 */
043public class MySqlDialect extends AnsiDialect
044{
045    public MySqlDialect()
046    {
047        super();
048        addFeature(SqlFeatureFactory.newInstance(SqlFeatureSupport.LIMIT, true));
049        addFeature(SqlFeatureFactory.newInstance(SqlFeatureSupport.LIMIT_OFF_SET, true));
050    }
051
052    /*
053    @Override
054    public boolean supportsLimit()
055    {
056        return true;
057    }
058    
059    @Override
060    public boolean supportsLimitOffset()
061    {
062        return true;
063    }
064    */
065    
066    /**
067     *  LIMIT and OFFSET clause for MySQL, where LIMIT and OFFSET are parameter from
068     *  String.format
069     *  
070     *  @return Return query pattern: 
071     *    <p>
072     *   <code>select name from author LIMIT 1 OFFSET 2</code>
073     * 
074     */
075    @Override
076    public String getSqlPatternPaging()
077    {
078        return "%1$s LIMIT %2$s OFFSET %3$s";
079    }
080}