/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (c) Alkacon Software GmbH (http://www.alkacon.com)
*
* This library 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 library 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.
*
* For further information about Alkacon Software GmbH, please see the
* company website: http://www.alkacon.com
*
* For further information about OpenCms, please see the
* project website: http://www.opencms.org
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.opencms.setup.db.update6to7;
import org.opencms.setup.CmsSetupDBWrapper;
import org.opencms.setup.CmsSetupDb;
import org.opencms.setup.db.A_CmsUpdateDBPart;
import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
/**
* This class creates all the indexes that are used in the database version 7.<p>
*
* @since 7.0.0
*/
public class CmsUpdateDBCreateIndexes7 extends A_CmsUpdateDBPart {
/** Constant for the sql query to read the indexes.<p> */
protected static final String QUERY_SHOW_INDEX = "QUERY_SHOW_INDEX";
/** Constant for the replacement of the tablename in the sql query.<p> */
protected static final String REPLACEMENT_TABLENAME = "${tablename}";
/** Constant for the field of the index name.<p> */
private static final String FIELD_INDEX = "KEY_NAME";
/** Constant for the primary key.<p> */
private static final String PRIMARY_KEY = "PRIMARY";
/** Constant for the SQL query properties.<p> */
private static final String QUERY_PROPERTY_FILE = "cms_add_new_indexes_queries.properties";
/** Constant for the replacement of the indexes to drop.<p> */
private static final String REPLACEMENT_INDEXES = "${dropindexes}";
/**
* Constructor.<p>
*
* @throws IOException if the query properties cannot be read
*/
public CmsUpdateDBCreateIndexes7()
throws IOException {
super();
loadQueryProperties(getPropertyFileLocation() + QUERY_PROPERTY_FILE);
}
/**
* @see org.opencms.setup.db.A_CmsUpdateDBPart#internalExecute(org.opencms.setup.CmsSetupDb)
*/
@Override
protected void internalExecute(CmsSetupDb dbCon) {
System.out.println(new Exception().getStackTrace()[0].toString());
List<String> elements = new ArrayList<String>();
elements.add("CMS_CONTENTS");
elements.add("CMS_GROUPS");
elements.add("CMS_GROUPUSERS");
elements.add("CMS_OFFLINE_ACCESSCONTROL");
elements.add("CMS_OFFLINE_CONTENTS");
elements.add("CMS_OFFLINE_PROPERTIES");
elements.add("CMS_OFFLINE_PROPERTYDEF");
elements.add("CMS_OFFLINE_RESOURCES");
elements.add("CMS_OFFLINE_STRUCTURE");
elements.add("CMS_ONLINE_ACCESSCONTROL");
elements.add("CMS_ONLINE_PROPERTIES");
elements.add("CMS_ONLINE_PROPERTYDEF");
elements.add("CMS_ONLINE_RESOURCES");
elements.add("CMS_ONLINE_STRUCTURE");
elements.add("CMS_PROJECTRESOURCES");
elements.add("CMS_PROJECTS");
elements.add("CMS_PUBLISH_HISTORY");
elements.add("CMS_STATICEXPORT_LINKS");
elements.add("CMS_USERS");
// iterate the queries
for (Iterator<String> it = elements.iterator(); it.hasNext();) {
String query = it.next();
// Check if the table exists
if (dbCon.hasTableOrColumn(query, null)) {
HashMap<String, String> replacer = new HashMap<String, String>();
replacer.put(REPLACEMENT_INDEXES, getIndexesToDrop(dbCon, query));
try {
dbCon.updateSqlStatement(readQuery(query), replacer, null);
} catch (SQLException e) {
e.printStackTrace();
}
} else {
System.out.println("Table " + query + "does not exist.");
}
}
}
/**
* Returns the string of the indexes that shall be dropped before adding the final new indexes.<p>
*
* @param dbCon the connection to the database
* @param tablename the table to drop the indexes from
*
* @return the string to drop the temporary indexes
*/
private String getIndexesToDrop(CmsSetupDb dbCon, String tablename) {
List<String> indexes = new ArrayList<String>();
String tableIndex = readQuery(QUERY_SHOW_INDEX);
Map<String, String> replacer = new HashMap<String, String>();
replacer.put(REPLACEMENT_TABLENAME, tablename);
CmsSetupDBWrapper db = null;
try {
db = dbCon.executeSqlStatement(tableIndex, replacer);
while (db.getResultSet().next()) {
String index = db.getResultSet().getString(FIELD_INDEX);
if (!indexes.contains(index)) {
indexes.add(index);
}
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
if (db != null) {
db.close();
}
}
StringBuffer dropIndex = new StringBuffer();
for (Iterator<String> it = indexes.iterator(); it.hasNext();) {
String index = it.next();
if (index.equals(PRIMARY_KEY)) {
dropIndex.append("DROP PRIMARY KEY, ");
} else {
dropIndex.append("DROP INDEX ");
dropIndex.append(index);
dropIndex.append(", ");
}
}
return dropIndex.toString();
}
}