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.cassandra.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 Cassandra
028 * 
029 * <p>
030 * Limit clause:
031 *  <code>select name from author LIMIT 1 </code>
032 * </p>
033 * 
034 * <ul>
035 *  <li>Supports limits? true</li>
036 *  <li>Supports limit off set? false</li>
037 *  <li>Supports rownum? false</li>
038 * </ul>
039 *
040 *
041 * @author Alisson Gomes 
042 * @since 0.6.0
043 */
044public class CassandraDialect extends AnsiDialect
045{
046    public CassandraDialect()
047    {
048        super();
049        addFeature(SqlFeatureFactory.newInstance(SqlFeatureSupport.LIMIT, true));
050        addFeature(SqlFeatureFactory.newInstance(SqlFeatureSupport.LIMIT_OFF_SET, false));
051        addFeature(SqlFeatureFactory.newInstance(SqlFeatureSupport.CONN_HOLDABILITY, false));
052        addFeature(SqlFeatureFactory.newInstance(SqlFeatureSupport.BOOKMARK_QUERY, true));
053        addFeature(SqlFeatureFactory.newInstance(SqlFeatureSupport.PAGING_ROUNDTRIP, false));
054    }
055
056    /*
057     *  LIMIT clause for Cassandra, where LIMIT is parameter from String.format
058     *  
059     *  @return Return query pattern: 
060     *  <p>
061     *  <code>select name from author LIMIT 1</code>
062     * 
063     *
064    @Override
065    public String getSqlPatternPaging()
066    {
067        return "%1$s LIMIT %2$s";
068    }
069    */
070}