/*
* Copyright 2008 biaoping.yin
*
* 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 com.frameworkset.orm.adapter;
public abstract class DB2Base extends DB {
public PagineSql getDBPagineSql(String sql, long offset, int maxsize,boolean prepared,String orderby) {
// return new StringBuilder(sql).append(" limit ").append(offset).append(",").append(maxsize).toString();
StringBuilder newsql = new StringBuilder();
if(prepared)
{
newsql.append("SELECT t.* FROM (SELECT res.* ,row_number() over(").append(orderby).append(") row_number_ FROM (").append(sql)
.append(") res) t where t.row_number_ <= ? and t.row_number_ >= ?");
/**
* StringBuilder ret = null;
if(prepared)
ret = new StringBuilder().append("select ss1.* from (select tt1.*,rownum rowno_ from (").append(sql).append(
") tt1 where rownum <= ?) ss1 where ss1.rowno_ >= ?");
else
ret = new StringBuilder("select ss1.* from (select tt1.*,rownum rowno_ from (").append(sql).append(
") tt1 where rownum <= ").append((offset + maxsize)).append(") ss1 where ss1.rowno_ >= ").append(
(offset + 1));
return new PagineSql(ret.toString(),offset + maxsize,offset + 1,offset, maxsize, prepared);
*/
return new PagineSql(newsql.toString(),offset + maxsize,offset + 1,offset, maxsize, prepared).setRebuilded(true);
}
else
{
newsql.append("SELECT t.* FROM (SELECT res.* ,row_number() over(").append(orderby).append(") row_number_ FROM (").append(sql)
.append(") res) t where t.row_number_ <= ").append(offset + maxsize).append(" and t.row_number_ >= ").append(offset + 1).append("");
return new PagineSql(newsql.toString(),offset + maxsize,offset + 1,offset, maxsize, prepared).setRebuilded(true);
}
}
public String getStringPagineSql(String sql,String orderby)
{
StringBuilder newsql = new StringBuilder();
newsql.append("SELECT t.* FROM (SELECT res.* ,row_number() over(").append(orderby).append(") row_number_ FROM (").append(sql)
.append(") res) t where t.row_number_ <= ? and t.row_number_ >= ?");
return newsql.toString();
}
public String getStringPagineSql(String schema,String tablename,String pkname ,String columns,String orderby)
{
StringBuilder newsql = new StringBuilder();
newsql.append("SELECT t.* FROM (SELECT res.* ,row_number() over(").append(orderby).append(") row_number_ FROM (").append("SELECT ");
if(columns != null && ! columns.equals(""))
{
newsql.append( columns);
}
else
newsql.append("* ");
newsql.append(" from ");
if(schema != null && !schema.equals(""))
newsql.append(schema).append(".");
newsql.append( tablename)
.append(") res) t where t.row_number_ <= ? and t.row_number_ >= ?");
return newsql.toString();
}
}