/*
* Copyright (C) 2003-2010 eXo Platform SAS.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License
* as published by the Free Software Foundation; either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see<http://www.gnu.org/licenses/>.
*/
package org.exoplatform.services.jcr.impl.storage.jdbc.optimisation.db;
import org.exoplatform.services.jcr.impl.storage.jdbc.JDBCDataContainerConfig;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
/**
* Created by The eXo Platform SAS.
*
* Date: 8 02 2011
*
* @author <a href="mailto:anatoliy.bazko@exoplatform.com.ua">Anatoliy Bazko</a>
* @version $Id: DB2MultiDbJDBCConnection.ajva 34360 2010-11-11 11:11:11Z tolusha $
*/
public class DB2MultiDbJDBCConnection extends MultiDbJDBCConnection
{
/**
* DB2 Multidatabase JDBC Connection constructor.
*
* @param dbConnection
* JDBC connection, should be opened before
* @param readOnly
* boolean if true the dbConnection was marked as READ-ONLY.
* @param containerConfig
* Workspace Storage Container configuration
*/
public DB2MultiDbJDBCConnection(Connection dbConnection, boolean readOnly, JDBCDataContainerConfig containerConfig)
throws SQLException
{
super(dbConnection, readOnly, containerConfig);
}
/**
* {@inheritDoc}
*/
@Override
protected void prepareQueries() throws SQLException
{
super.prepareQueries();
FIND_NODES_AND_PROPERTIES =
"select J.*, P.ID AS P_ID, P.NAME AS P_NAME, P.VERSION AS P_VERSION, P.P_TYPE, P.P_MULTIVALUED,"
+ " V.DATA, V.ORDER_NUM, V.STORAGE_DESC from " + JCR_VALUE + " V, " + JCR_ITEM + " P"
+ " join (select I.ID, I.PARENT_ID, I.NAME, I.VERSION, I.I_INDEX, I.N_ORDER_NUM from " + JCR_ITEM + " I"
+ " where I.I_CLASS=1 AND I.ID > ? order by I.ID FETCH FIRST $rowNb ROWS ONLY) J on P.PARENT_ID = J.ID"
+ " where P.I_CLASS=2 and V.PROPERTY_ID=P.ID order by J.ID";
if (containerConfig.useSequenceForOrderNumber)
{
FIND_LAST_ORDER_NUMBER = "SELECT " + JCR_ITEM_NEXT_VAL + " ('" + JCR_ITEM_SEQ + "', ?, ?) FROM SYSIBM.SYSDUMMY1";
FIND_NODES_BY_PARENTID_LAZILY_CQ =
"select I.*, P.NAME AS PROP_NAME, V.ORDER_NUM, V.DATA from " + JCR_VALUE +" V, "+JCR_ITEM +" P "
+ " join (select J.* from "+JCR_ITEM +" J where J.I_CLASS=1 and J.PARENT_ID=?"
+ " AND J.N_ORDER_NUM >= ? order by J.N_ORDER_NUM, J.ID FETCH FIRST $rowNb ROWS ONLY) I on P.PARENT_ID = I.ID"
+ " where P.I_CLASS=2 and P.PARENT_ID=I.ID and"
+ " (P.NAME='[http://www.jcp.org/jcr/1.0]primaryType' or"
+ " P.NAME='[http://www.jcp.org/jcr/1.0]mixinTypes' or"
+ " P.NAME='[http://www.exoplatform.com/jcr/exo/1.0]owner' or"
+ " P.NAME='[http://www.exoplatform.com/jcr/exo/1.0]permissions')"
+ " and V.PROPERTY_ID=P.ID order by I.N_ORDER_NUM, I.ID";
}
}
/**
* {@inheritDoc}
*/
@Override
protected ResultSet findNodesAndProperties(String lastNodeId, int offset, int limit) throws SQLException
{
if (findNodesAndProperties == null)
{
FIND_NODES_AND_PROPERTIES=FIND_NODES_AND_PROPERTIES.replace("$rowNb",Integer.toString(limit)) ;
findNodesAndProperties = dbConnection.prepareStatement(FIND_NODES_AND_PROPERTIES);
}
else
{
findNodesAndProperties.clearParameters();
}
findNodesAndProperties.setString(1, getInternalId(lastNodeId));
return findNodesAndProperties.executeQuery();
}
/**
* {@inheritDoc}
*/
@Override
protected ResultSet findChildNodesByParentIdentifier(String parentCid, int fromOrderNum, int offset, int limit)
throws SQLException
{
if (!containerConfig.useSequenceForOrderNumber)
{
return super.findChildNodesByParentIdentifier(parentCid, fromOrderNum, offset, limit);
}
if (findNodesByParentIdLazilyCQ == null)
{
FIND_NODES_BY_PARENTID_LAZILY_CQ = FIND_NODES_BY_PARENTID_LAZILY_CQ.replace("$rowNb", Integer.toString(limit));
findNodesByParentIdLazilyCQ = dbConnection.prepareStatement(FIND_NODES_BY_PARENTID_LAZILY_CQ);
}
else
{
findNodesByParentIdLazilyCQ.clearParameters();
}
findNodesByParentIdLazilyCQ.setString(1, parentCid);
findNodesByParentIdLazilyCQ.setInt(2, fromOrderNum);
return findNodesByParentIdLazilyCQ.executeQuery();
}
/**
* {@inheritDoc}
*/
@Override
protected void startTxIfNeeded() throws SQLException
{
if (containerConfig.isManaged && dbConnection.getAutoCommit())
{
dbConnection.setAutoCommit(false);
}
}
}