/*
* Copyright (C) 2012 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.services.jcr.impl.clean.rdbms.scripts;
import org.exoplatform.services.jcr.config.RepositoryConfigurationException;
import org.exoplatform.services.jcr.config.RepositoryEntry;
import org.exoplatform.services.jcr.config.WorkspaceEntry;
import org.exoplatform.services.jcr.impl.clean.rdbms.DBCleanException;
import org.exoplatform.services.jcr.impl.util.jdbc.DBInitializerHelper;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
/**
* @author <a href="abazko@exoplatform.com">Anatoliy Bazko</a>
* @version $Id: MySQLCleaningScipts.java 34360 2009-07-22 23:58:59Z tolusha $
*
*/
public class MySQLCleaningScipts extends DBCleaningScripts
{
/**
* MySQLCleaningScipts constructor.
*/
public MySQLCleaningScipts(String dialect, RepositoryEntry rEntry) throws DBCleanException
{
super(dialect, rEntry);
prepareRenamingApproachScripts();
}
/**
* MySQLCleaningScipts constructor.
*/
public MySQLCleaningScipts(String dialect, WorkspaceEntry wEntry) throws DBCleanException
{
super(dialect, wEntry);
if (multiDb)
{
prepareRenamingApproachScripts();
}
else
{
prepareSimpleCleaningApproachScripts();
}
}
/**
* {@inheritDoc}
*/
protected void prepareRenamingApproachScripts() throws DBCleanException
{
super.prepareRenamingApproachScripts();
// constraints already removed in {@link #getDBInitializationScripts()}
cleaningScripts.clear();
cleaningScripts.addAll(getTablesRenamingScripts());
cleaningScripts.addAll(getDBInitializationScripts());
cleaningScripts.addAll(getIndexesDroppingScripts());
String constraintName =
"JCR_FK_" + valueTableSuffix + "_PROPERTY FOREIGN KEY(PROPERTY_ID) REFERENCES " + itemTableName + "(ID)";
committingScripts.add("ALTER TABLE " + valueTableName + " ADD CONSTRAINT " + constraintName);
}
/**
* {@inheritDoc}
*/
protected String constraintDroppingSyntax()
{
return "DROP FOREIGN KEY";
}
/**
* {@inheritDoc}
*/
protected Collection<String> getDBInitializationScripts() throws DBCleanException
{
Collection<String> scripts = super.getDBInitializationScripts();
return filter(scripts);
}
/**
* Removing foreign key creation from initialization scripts for table JCR_S(M)ITEM
* and JCR_S(M)VALUE. It is not possible to create table with such foreign key if the same key
* exists in another table of database
*/
private Collection<String> filter(Collection<String> scripts)
{
String JCR_ITEM_PRIMARY_KEY = "CONSTRAINT JCR_PK_" + itemTableSuffix + " PRIMARY KEY(ID)";
String JCR_ITEM_FOREIGN_KEY =
"CONSTRAINT JCR_FK_" + itemTableSuffix + "_PARENT FOREIGN KEY(PARENT_ID) REFERENCES " + itemTableName + "(ID)";
String JCR_VALUE_PRIMARY_KEY = "CONSTRAINT JCR_PK_" + valueTableSuffix + " PRIMARY KEY(ID)";
String JCR_VALUE_FOREIGN_KEY =
"CONSTRAINT JCR_FK_" + valueTableSuffix + "_PROPERTY FOREIGN KEY(PROPERTY_ID) REFERENCES " + itemTableName
+ "(ID)";
Collection<String> filteredScripts = new ArrayList<String>();
for (String script : scripts)
{
if (script.contains(JCR_ITEM_PRIMARY_KEY + ","))
{
script = script.replace(JCR_ITEM_PRIMARY_KEY + ",", JCR_ITEM_PRIMARY_KEY);
script = script.replace(JCR_ITEM_FOREIGN_KEY, "");
}
else if (script.contains(JCR_VALUE_PRIMARY_KEY + ","))
{
script = script.replace(JCR_VALUE_PRIMARY_KEY + ",", JCR_VALUE_PRIMARY_KEY);
script = script.replace(JCR_VALUE_FOREIGN_KEY, "");
}
filteredScripts.add(script);
}
return filteredScripts;
}
/**
* {@inheritDoc}
*/
protected Collection<String> getTablesRenamingScripts()
{
Collection<String> scripts = new ArrayList<String>();
scripts.add("ALTER TABLE " + valueTableName + " RENAME TO " + valueTableName + "_OLD");
scripts.add("ALTER TABLE " + itemTableName + " RENAME TO " + itemTableName + "_OLD");
scripts.add("ALTER TABLE " + refTableName + " RENAME TO " + refTableName + "_OLD");
return scripts;
}
/**
* {@inheritDoc}
*/
protected Collection<String> getOldTablesRenamingScripts() throws DBCleanException
{
Collection<String> scripts = new ArrayList<String>();
scripts.add("ALTER TABLE " + itemTableName + "_OLD RENAME TO " + itemTableName);
scripts.add("ALTER TABLE " + valueTableName + "_OLD RENAME TO " + valueTableName);
scripts.add("ALTER TABLE " + refTableName + "_OLD RENAME TO " + refTableName);
return scripts;
}
}