/*
* 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.oracle;
import org.opencms.setup.CmsSetupDBWrapper;
import org.opencms.setup.CmsSetupDb;
import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
/**
* Oracle implementation to drop the old indexes from the database.<p>
*
* @since 7.0.0
*/
public class CmsUpdateDBDropOldIndexes extends org.opencms.setup.db.update6to7.CmsUpdateDBDropOldIndexes {
/** Constant for the field of the constraint name.<p> */
private static final String FIELD_CONSTRAINT_ORACLE = "CONSTRAINT_NAME";
/** Constant for the field of the index name.<p> */
private static final String FIELD_INDEX_ORACLE = "INDEX_NAME";
/** Constant for the sql query to drop a unique index key. */
private static final String QUERY_DROP_CONSTRAINT = "Q_DROP_CONSTRAINT";
/** Constant for the SQL query properties.<p> */
private static final String QUERY_PROPERTY_FILE_ORACLE = "cms_drop_all_indexes_queries.properties";
/** Constant for the sql query to list contraints for a table. */
private static final String QUERY_SHOW_CONSTRAINTS = "Q_SHOW_CONSTRAINTS";
/** Constant for the replacement of the index name. */
private static final String REPLACEMENT_INDEX_ORACLE = "${indexname}";
/** Constant array of the temporary indexes. */
private static final String[] TEMP_INDEXES = {
"CMS_BACKUP_CONTENTS_INDEX_1",
"CMS_BACKUP_CONTENTS_INDEX_2",
"CMS_BACKUP_PROJECTRESOURCES_INDEX_1",
"CMS_BACKUP_PROJECTS_INDEX_1",
"CMS_BACKUP_PROJECTS_INDEX_2",
"CMS_BACKUP_PROJECTS_INDEX_3",
"CMS_BACKUP_PROJECTS_INDEX_4",
"CMS_BACKUP_PROJECTS_INDEX_5",
"CMS_BACKUP_PROJECTS_INDEX_6",
"CMS_BACKUP_PROPERTIES_INDEX_1",
"CMS_BACKUP_PROPERTIES_INDEX_2",
"CMS_BACKUP_PROPERTIES_INDEX_3",
"CMS_BACKUP_PROPERTYDEF_INDEX_1",
"CMS_BACKUP_RESOURCES_INDEX_1",
"CMS_BACKUP_RESOURCES_INDEX_2",
"CMS_BACKUP_RESOURCES_INDEX_3",
"CMS_BACKUP_RESOURCES_INDEX_4",
"CMS_BACKUP_RESOURCES_INDEX_5",
"CMS_BACKUP_STRUCTURE_INDEX_1",
"CMS_BACKUP_STRUCTURE_INDEX_2",
"CMS_BACKUP_STRUCTURE_INDEX_3",
"CMS_BACKUP_STRUCTURE_INDEX_4",
"CMS_GROUPS_INDEX_1",
"CMS_OFFLINE_CONTENTS_INDEX_1",
"CMS_OFFLINE_RESOURCES_INDEX_1",
"CMS_OFFLINE_RESOURCES_INDEX_2",
"CMS_OFFLINE_RESOURCES_INDEX_3",
"CMS_OFFLINE_RESOURCES_INDEX_4",
"CMS_OFFLINE_STRUCTURE_INDEX_1",
"CMS_OFFLINE_STRUCTURE_INDEX_2",
"CMS_OFFLINE_STRUCTURE_INDEX_3",
"CMS_ONLINE_CONTENTS_INDEX_1",
"CMS_ONLINE_RESOURCES_INDEX_1",
"CMS_ONLINE_RESOURCES_INDEX_2",
"CMS_ONLINE_RESOURCES_INDEX_3",
"CMS_ONLINE_RESOURCES_INDEX_4",
"CMS_ONLINE_STRUCTURE_INDEX_1",
"CMS_ONLINE_STRUCTURE_INDEX_2",
"CMS_ONLINE_STRUCTURE_INDEX_3",
"CMS_PROJECTRESOURCES_INDEX_1",
"CMS_PROJECTS_INDEX_1",
"CMS_PROJECTS_INDEX_2",
"CMS_PROJECTS_INDEX_3",
"CMS_PROJECTS_INDEX_4",
"CMS_PUBLISH_HISTORY_INDEX_1",
"CMS_PUBLISH_HISTORY_INDEX_2"};
/** Constant Array List of the temporary indexes. */
private static final List<String> TEMP_INDEXES_LIST = Collections.unmodifiableList(Arrays.asList(TEMP_INDEXES));
/**
* Constructor.<p>
*
* @throws IOException if the sql queries properties file could not be read
*/
public CmsUpdateDBDropOldIndexes()
throws IOException {
super();
loadQueryProperties(getPropertyFileLocation() + QUERY_PROPERTY_FILE_ORACLE);
}
// No implementation yet
/**
* @see org.opencms.setup.db.A_CmsUpdateDBPart#internalExecute(org.opencms.setup.CmsSetupDb)
*/
@Override
protected void internalExecute(CmsSetupDb dbCon) {
List<String> tablenames = CMS_TABLES_LIST;
// Iterate over all the tables.
for (Iterator<String> tableIterator = tablenames.iterator(); tableIterator.hasNext();) {
String tablename = tableIterator.next();
System.out.println("dropping indexes for table " + tablename);
// Check if the table is existing
if (dbCon.hasTableOrColumn(tablename, null)) {
try {
// First drop constraints
List<String> constraints = getConstraints(dbCon, tablename);
Iterator<String> iter = constraints.iterator();
while (iter.hasNext()) {
String constraint = iter.next();
String dropConstraint = readQuery(QUERY_DROP_CONSTRAINT);
Map<String, String> replacer = new HashMap<String, String>();
replacer.put(REPLACEMENT_TABLENAME, tablename);
replacer.put(REPLACEMENT_INDEX_ORACLE, constraint);
dbCon.updateSqlStatement(dropConstraint, replacer, null);
}
// Drop the indexes from the table.
List<String> indexes = getIndexes(dbCon, tablename);
iter = indexes.iterator();
while (iter.hasNext()) {
String index = iter.next();
// Drop the index
String dropIndex = readQuery(QUERY_DROP_INDEX);
Map<String, String> replacerIndex = new HashMap<String, String>();
replacerIndex.put(REPLACEMENT_INDEX_ORACLE, index);
dbCon.updateSqlStatement(dropIndex, replacerIndex, null);
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
// Create the temporary indexes
// Each index must be created in its own query
for (Iterator<String> tempIndexes = TEMP_INDEXES_LIST.iterator(); tempIndexes.hasNext();) {
try {
String createIndex = tempIndexes.next();
String creationQuery = readQuery(createIndex);
dbCon.updateSqlStatement(creationQuery, null, null);
} catch (SQLException e) {
e.printStackTrace();
}
}
}
/**
* Gets the constraints for a table.<p>
*
* @param dbCon the db connection interface
* @param tablename the table to get the indexes from
*
* @return a list of constraints
*
* @throws SQLException if something goes wrong
*/
private List<String> getConstraints(CmsSetupDb dbCon, String tablename) throws SQLException {
List<String> constraints = new ArrayList<String>();
String tableConstraints = readQuery(QUERY_SHOW_CONSTRAINTS);
Map<String, String> replacer = new HashMap<String, String>();
replacer.put(REPLACEMENT_TABLENAME, tablename);
CmsSetupDBWrapper db = null;
try {
db = dbCon.executeSqlStatement(tableConstraints, replacer);
while (db.getResultSet().next()) {
String constraint = db.getResultSet().getString(FIELD_CONSTRAINT_ORACLE);
if (!constraints.contains(constraint)) {
constraints.add(constraint);
}
}
} finally {
if (db != null) {
db.close();
}
}
return constraints;
}
/**
* Gets the indexes for a table.<p>
*
* @param dbCon the db connection interface
* @param tablename the table to get the indexes from
*
* @return a list of indexes
*
* @throws SQLException if something goes wrong
*/
private List<String> getIndexes(CmsSetupDb dbCon, String tablename) throws SQLException {
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_ORACLE);
if (!indexes.contains(index)) {
indexes.add(index);
}
}
} finally {
if (db != null) {
db.close();
}
}
return indexes;
}
}