content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://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 & Co. KG, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://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.postgresql;
  
  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.HashMap;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Map;
  
  /**
   * PostgreSQL implementation for the creation of the indexes of the tables in version 7.<p>
   *
   * @since 7.0.2
   */
  public class CmsUpdateDBCreateIndexes7 extends org.opencms.setup.db.update6to7.CmsUpdateDBCreateIndexes7 {
  
      /** Constant for the sql query to drop the primary key of a table. */
      private static final String QUERY_DROP_CONSTRAINT = "Q_DROP_CONSTRAINT";
  
      /** Constant for the sql query to drop an index. */
      private static final String QUERY_DROP_INDEX = "Q_DROP_INDEX";
  
      /** Constant for the SQL query properties.<p> */
      private static final String QUERY_PROPERTY_FILE = "cms_add_new_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 indexname. */
      private static final String REPLACEMENT_INDEXNAME = "${indexname}";
  
      /** Constant for the replacement in the sql query. */
      private static final String REPLACEMENT_TABLEINDEX_SPACE = "${indexTablespace}";
  
      /**
       * Constructor.<p>
       *
       * @throws IOException if the sql queries properties file could not 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("XXX");
          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 tablename = it.next();
  
              System.out.println("Table: " + tablename);
              // Check if the table exists
              if (dbCon.hasTableOrColumn(tablename, null)) {
  
                  // Drop the constraints
                  try {
                      List<String> constraints = getConstraintsTopDrop(dbCon, tablename.toLowerCase());
                      Iterator<String> iter = constraints.iterator();
                      System.out.println("Drop constraint for table " + tablename + " is :" + constraints);
                      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_INDEXNAME, constraint);
                          dbCon.updateSqlStatement(dropConstraint, replacer, null);
                      }
                  } catch (SQLException e) {
                      e.printStackTrace();
                  }
  
                  // Drop the indexes
                  try {
                      List<String> indexes = getIndexesToDrop(dbCon, tablename);
                      Iterator<String> 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_INDEXNAME, index);
                          dbCon.updateSqlStatement(dropIndex, replacerIndex, null);
                      }
                  } catch (SQLException e) {
                      e.printStackTrace();
                  }
  
              } else {
                  System.out.println("Table " + tablename + "does not exist.");
              }
          }
          // Create the new indexes for the table
          createNewIndexes(dbCon);
      }
  
      /**
       * Creates the new indexes for the given table.<p>
       *
       * @param dbCon the connection to the database
       */
      private void createNewIndexes(CmsSetupDb dbCon) {
  
          List<String> indexElements = new ArrayList<String>();
          indexElements.add("CMS_CONTENTS_PRIMARY_KEY");
          indexElements.add("CMS_CONTENTS_01_IDX_INDEX");
          indexElements.add("CMS_CONTENTS_02_IDX_INDEX");
          indexElements.add("CMS_CONTENTS_03_IDX_INDEX");
          indexElements.add("CMS_CONTENTS_04_IDX_INDEX");
          indexElements.add("CMS_CONTENTS_05_IDX_INDEX");
          indexElements.add("CMS_GROUPS_PRIMARY_KEY");
          indexElements.add("CMS_GROUPS_UNIQUE_KEY_GROUPS");
          indexElements.add("CMS_GROUPS_01_IDX_INDEX");
          indexElements.add("CMS_GROUPS_02_IDX_INDEX");
          indexElements.add("CMS_GROUPS_03_IDX_INDEX");
          indexElements.add("CMS_GROUPUSERS_PRIMARY_KEY");
          indexElements.add("CMS_GROUPUSERS_01_IDX_INDEX");
          indexElements.add("CMS_GROUPUSERS_02_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_ACCESSCONTROL_PRIMARY_KEY");
          indexElements.add("CMS_OFFLINE_ACCESSCONTROL_01_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_ACCESSCONTROL_02_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_CONTENTS_PRIMARY_KEY");
          indexElements.add("CMS_OFFLINE_PROPERTIES_PRIMARY_KEY");
          indexElements.add("CMS_OFFLINE_PROPERTIES_UNIQUE_KEY_PROPERTIES");
          indexElements.add("CMS_OFFLINE_PROPERTIES_01_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_PROPERTIES_02_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_PROPERTYDEF_PRIMARY_KEY");
          indexElements.add("CMS_OFFLINE_PROPERTYDEF_UNIQUE_KEY_PROPERTYDEF");
          indexElements.add("CMS_OFFLINE_RESOURCES_PRIMARY_KEY");
          indexElements.add("CMS_OFFLINE_RESOURCES_01_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_RESOURCES_02_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_RESOURCES_03_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_RESOURCES_04_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_RESOURCES_05_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_STRUCTURE_PRIMARY_KEY");
          indexElements.add("CMS_OFFLINE_STRUCTURE_01_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_STRUCTURE_02_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_STRUCTURE_03_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_STRUCTURE_04_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_STRUCTURE_05_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_STRUCTURE_06_IDX_INDEX");
          indexElements.add("CMS_OFFLINE_STRUCTURE_07_IDX_INDEX");
          indexElements.add("CMS_ONLINE_ACCESSCONTROL_PRIMARY_KEY");
          indexElements.add("CMS_ONLINE_ACCESSCONTROL_01_IDX_INDEX");
          indexElements.add("CMS_ONLINE_ACCESSCONTROL_02_IDX_INDEX");
          indexElements.add("CMS_ONLINE_PROPERTIES_PRIMARY_KEY");
          indexElements.add("CMS_ONLINE_PROPERTIES_UNIQUE_KEY_PROPERTIES");
          indexElements.add("CMS_ONLINE_PROPERTIES_01_IDX_INDEX");
          indexElements.add("CMS_ONLINE_PROPERTIES_02_IDX_INDEX");
          indexElements.add("CMS_ONLINE_PROPERTYDEF_PRIMARY_KEY");
          indexElements.add("CMS_ONLINE_PROPERTYDEF_UNIQUE_KEY_PROPERTYDEF");
          indexElements.add("CMS_ONLINE_RESOURCES_PRIMARY_KEY");
          indexElements.add("CMS_ONLINE_RESOURCES_01_IDX_INDEX");
          indexElements.add("CMS_ONLINE_RESOURCES_02_IDX_INDEX");
          indexElements.add("CMS_ONLINE_RESOURCES_03_IDX_INDEX");
          indexElements.add("CMS_ONLINE_RESOURCES_04_IDX_INDEX");
          indexElements.add("CMS_ONLINE_RESOURCES_05_IDX_INDEX");
          indexElements.add("CMS_ONLINE_STRUCTURE_PRIMARY_KEY");
          indexElements.add("CMS_ONLINE_STRUCTURE_01_IDX_INDEX");
          indexElements.add("CMS_ONLINE_STRUCTURE_02_IDX_INDEX");
          indexElements.add("CMS_ONLINE_STRUCTURE_03_IDX_INDEX");
          indexElements.add("CMS_ONLINE_STRUCTURE_04_IDX_INDEX");
          indexElements.add("CMS_ONLINE_STRUCTURE_05_IDX_INDEX");
          indexElements.add("CMS_ONLINE_STRUCTURE_06_IDX_INDEX");
          indexElements.add("CMS_ONLINE_STRUCTURE_07_IDX_INDEX");
          indexElements.add("CMS_PROJECTRESOURCES_PRIMARY_KEY");
          indexElements.add("CMS_PROJECTRESOURCES_01_IDX_INDEX");
          indexElements.add("CMS_PROJECTS_PRIMARY_KEY");
          indexElements.add("CMS_PROJECTS_UNIQUE_KEY_PROJECTS");
          indexElements.add("CMS_PROJECTS_01_IDX_INDEX");
          indexElements.add("CMS_PROJECTS_02_IDX_INDEX");
          indexElements.add("CMS_PROJECTS_03_IDX_INDEX");
          indexElements.add("CMS_PROJECTS_04_IDX_INDEX");
          indexElements.add("CMS_PROJECTS_05_IDX_INDEX");
          indexElements.add("CMS_PROJECTS_06_IDX_INDEX");
          indexElements.add("CMS_PROJECTS_07_IDX_INDEX");
          indexElements.add("CMS_PUBLISH_HISTORY_PRIMARY_KEY");
          indexElements.add("CMS_PUBLISH_HISTORY_01_IDX_INDEX");
          indexElements.add("CMS_STATICEXPORT_LINKS_PRIMARY_KEY");
          indexElements.add("CMS_STATICEXPORT_LINKS_01_IDX_INDEX");
          indexElements.add("CMS_USERS_PRIMARY_KEY");
          indexElements.add("CMS_USERS_UNIQUE_KEY_USERS");
          indexElements.add("CMS_USERS_01_IDX_INDEX");
          indexElements.add("CMS_USERS_02_IDX_INDEX");
  
          String indexTablespace = m_poolData.get("indexTablespace");
  
          // Create the indexes
          for (Iterator<String> createIndexes = indexElements.iterator(); createIndexes.hasNext();) {
              String queryToRead = createIndexes.next();
              String query = readQuery(queryToRead);
              try {
                  Map<String, String> replacer = new HashMap<String, String>();
                  replacer.put(REPLACEMENT_TABLEINDEX_SPACE, indexTablespace);
                  // Create the index
                  dbCon.updateSqlStatement(query, replacer, 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> getConstraintsTopDrop(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.toLowerCase());
          CmsSetupDBWrapper db = null;
          try {
              db = dbCon.executeSqlStatement(tableConstraints, replacer);
              while (db.getResultSet().next()) {
                  String constraint = db.getResultSet().getString(1);
                  if (!constraints.contains(constraint)) {
                      constraints.add(constraint);
                  }
              }
          } finally {
              if (db != null) {
                  db.close();
              }
          }
          return constraints;
      }
  
      /**
       * Returns the list 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 list of indexes to drop
       */
      private List<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.toLowerCase());
          CmsSetupDBWrapper db = null;
          try {
              db = dbCon.executeSqlStatement(tableIndex, replacer);
              while (db.getResultSet().next()) {
                  String index = db.getResultSet().getString(1);
                  if (!indexes.contains(index)) {
                      indexes.add(index);
                  }
              }
          } catch (SQLException e) {
              e.printStackTrace();
          } finally {
              if (db != null) {
                  db.close();
              }
          }
  
          return indexes;
      }
  }
  