# WhitePagesInstancePreDestruction.java

    /*
     * Copyright (C) 2000 - 2024 Silverpeas
     * <p>
     * This program is free software: you can redistribute it and/or modify
     * it under the terms of the GNU Affero General Public License as
     * published by the Free Software Foundation, either version 3 of the
     * License, or (at your option) any later version.
     * <p>
     * As a special exception to the terms and conditions of version 3.0 of
     * the GPL, you may redistribute this Program in connection with Free/Libre
     * Open Source Software ("FLOSS") applications as described in Silverpeas's
     * FLOSS exception.  You should have received a copy of the text describing
     * the FLOSS exception, and it is also available here:
     * "http://www.silverpeas.org/docs/core/legal/floss_exception.html"
     * <p>
     * This program 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 Affero General Public License for more details.
     * <p>
     * You should have received a copy of the GNU Affero General Public License
     * along with this program.  If not, see <https://www.gnu.org/licenses/>.
     */
    package org.silverpeas.components.whitepages;

    import org.silverpeas.components.whitepages.service.WhitePageServiceProvider;
    import org.silverpeas.kernel.SilverpeasRuntimeException;
    import org.silverpeas.core.admin.component.ComponentInstancePreDestruction;
    import org.silverpeas.core.annotation.Bean;
    import org.silverpeas.kernel.annotation.Technical;
    import org.silverpeas.core.contribution.template.publication.PublicationTemplateManager;
    import org.silverpeas.core.persistence.jdbc.DBUtil;

    import javax.inject.Named;
    import javax.transaction.Transactional;
    import java.sql.Connection;
    import java.sql.PreparedStatement;

    /**
     * Deletes all the resources used by the WhitePages instance that is being deleted.
     * @author mmoquillon
     */
    @Technical
    @Bean
    @Named
    public class WhitePagesInstancePreDestruction implements ComponentInstancePreDestruction {

      private static final String WHITE_CARDS_DELETION =
          "DELETE FROM SC_WhitePages_Card WHERE instanceId = ?";

      /**
       * Performs pre destruction tasks in the behalf of the specified component instance.
       * @param componentInstanceId the unique identifier of the component instance.
       */
      @Transactional
      @Override
      public void preDestroy(final String componentInstanceId) {
        try (Connection connection = DBUtil.openConnection()) {
          try (PreparedStatement deletion = connection.prepareStatement(WHITE_CARDS_DELETION)) {
            deletion.setString(1, componentInstanceId);
            deletion.execute();
            PublicationTemplateManager.getInstance().removePublicationTemplate(componentInstanceId);
            WhitePageServiceProvider.getWhitePagesService().deleteFields(componentInstanceId);
          }
        } catch (Exception e) {
          throw new SilverpeasRuntimeException(e.getMessage(), e);
        }
      }
    }