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;
  
  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.Collections;
  import java.util.HashMap;
  import java.util.Map;
  
  /**
   * This class creates the table CMS_CONTENTS and fills it with data from the tables CMS_BACKUP_CONTENTS and CMS_ONLINE_CONTENTS.<p>
   *
   * @since 7.0.0
   */
  public class CmsUpdateDBContentTables extends A_CmsUpdateDBPart {
  
      /** Constant for the sql query to create the CMS_CONTENTS table.<p> */
      protected static final String QUERY_CREATE_CMS_CONTENTS_TABLE = "Q_CREATE_CMS_CONTENTS_TABLE";
  
      /** Constant for the sql query to transfer the online contents.<p> */
      protected static final String QUERY_TRANSFER_ONLINE_CONTENTS = "Q_TRANSFER_ONLINE_CONTENTS";
  
      /** Constant for the table CMS_CONTENTS.<p> */
      protected static final String TABLE_CMS_CONTENTS = "CMS_CONTENTS";
  
      /** Constant for the sql query to drop a table.<p> */
      private static final String QUERY_DROP_TABLE = "Q_DROP_TABLE";
  
      /** Constant for the SQL query properties.<p> */
      private static final String QUERY_PROPERTY_FILE = "cms_content_table_queries.properties";
  
      /** Constant for the sql query to read the max publish tag.<p> */
      private static final String QUERY_READ_MAX_PUBTAG = "Q_READ_MAX_PUBTAG";
  
      /** Constant for the sql query to transfer the backup contents.<p> */
      private static final String QUERY_TRANSFER_BACKUP_CONTENTS = "Q_TRANSFER_BACKUP_CONTENTS";
  
      /** Constant for the replacement in the SQL query for the tablename.<p> */
      private static final String REPLACEMENT_TABLENAME = "${tablename}";
  
      /** Constant for the table CMS_BACKUP_CONTENTS.<p> */
      private static final String TABLE_CMS_BACKUP_CONTENTS = "CMS_BACKUP_CONTENTS";
  
      /** Constant for the table CMS_ONLINE_CONTENTS.<p> */
      private static final String TABLE_CMS_ONLINE_CONTENTS = "CMS_ONLINE_CONTENTS";
  
      /**
       * Constructor.<p>
       *
       * @throws IOException if the query properties cannot be read
       */
      public CmsUpdateDBContentTables()
      throws IOException {
  
          super();
          loadQueryProperties(getPropertyFileLocation() + QUERY_PROPERTY_FILE);
      }
  
      /**
       * Creates the CMS_CONTENTS table if it does not exist yet.<p>
       *
       * @param dbCon the db connection interface
       *
       * @throws SQLException if something goes wrong
       */
      protected void createContentsTable(CmsSetupDb dbCon) throws SQLException {
  
          System.out.println(new Exception().getStackTrace()[0].toString());
          if (!dbCon.hasTableOrColumn(TABLE_CMS_CONTENTS, null)) {
              String query = readQuery(QUERY_CREATE_CMS_CONTENTS_TABLE);
              dbCon.updateSqlStatement(query, null, null);
          } else {
              System.out.println("table " + TABLE_CMS_CONTENTS + " already exists");
          }
      }
  
      /**
       * @see org.opencms.setup.db.A_CmsUpdateDBPart#internalExecute(org.opencms.setup.CmsSetupDb)
       */
      @Override
      protected void internalExecute(CmsSetupDb dbCon) throws SQLException {
  
          System.out.println(new Exception().getStackTrace()[0].toString());
          createContentsTable(dbCon);
  
          // Transfer the online contents if the table exists
          if (dbCon.hasTableOrColumn(TABLE_CMS_ONLINE_CONTENTS, null)) {
              int pubTag = 1;
              String query = readQuery(QUERY_READ_MAX_PUBTAG);
              CmsSetupDBWrapper db = null;
              try {
                  db = dbCon.executeSqlStatement(query, null);
                  if (db.getResultSet().next()) {
                      pubTag = db.getResultSet().getInt(1);
                  }
              } finally {
                  if (db != null) {
                      db.close();
                  }
              }
              transferOnlineContents(dbCon, pubTag);
          } else {
              System.out.println("no table " + TABLE_CMS_ONLINE_CONTENTS + " found");
          }
  
          if (isKeepHistory()) {
              // Transfer the backup contents if the table exists
              if (dbCon.hasTableOrColumn(TABLE_CMS_BACKUP_CONTENTS, null)) {
                  String query = readQuery(QUERY_TRANSFER_BACKUP_CONTENTS);
                  dbCon.updateSqlStatement(query, null, null);
              } else {
                  System.out.println("no table " + TABLE_CMS_BACKUP_CONTENTS + " found");
              }
          }
  
          // Drop the tables CMS_BACKUP_CONTENTS and CMS_ONLINE_CONTENTS
          cleanUpContentsTables(dbCon);
      }
  
      /**
       * Transfers the online content.<p>
       *
       * @param dbCon the db connection interface
       * @param pubTag the publish tag to use
       *
       * @throws SQLException if something goes wrong
       */
      protected void transferOnlineContents(CmsSetupDb dbCon, int pubTag) throws SQLException {
  
          String query = readQuery(QUERY_TRANSFER_ONLINE_CONTENTS);
          Map<String, String> replacer = Collections.singletonMap("${pubTag}", "" + pubTag);
          dbCon.updateSqlStatement(query, replacer, null);
      }
  
      /**
       * After the transfer the tables CMS_ONLINE_CONTENTS and CMS_BACKUP contents are dropped as they are no longer needed.<p>
       *
       * @param dbCon the db connection interface
       *
       * @throws SQLException if something goes wrong
       */
      private void cleanUpContentsTables(CmsSetupDb dbCon) throws SQLException {
  
          System.out.println(new Exception().getStackTrace()[0].toString());
          String query = readQuery(QUERY_DROP_TABLE);
          HashMap<String, String> replacers = new HashMap<String, String>();
          // Drop the CMS_ONLINE_CONTENTS table
          replacers.put(REPLACEMENT_TABLENAME, TABLE_CMS_ONLINE_CONTENTS);
          dbCon.updateSqlStatement(query, replacers, null);
  
          replacers.clear();
          // Drop the CMS_BACKUP_CONTENTS table
          replacers.put(REPLACEMENT_TABLENAME, TABLE_CMS_BACKUP_CONTENTS);
          dbCon.updateSqlStatement(query, replacers, null);
      }
  }
  