NameMigration.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2022 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * 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.
 *
 * 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.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.contacts.name;
 
import org.turro.contacts.db.ContactsPU;
import org.turro.jpa.Dao;
import org.turro.jpa.DaoUtil;
import org.turro.sql.SqlClause;
 
public class NameMigration {
  
  public static void migrate() {
    NameMigration migration = new NameMigration();
    if(migration.isNecessary()) {
      migration.start();
    }
  }
 
  private boolean isNecessary() {
    Dao dao = new ContactsPU();
    return DaoUtil.isEmpty(dao, "Contact", "where complexName.full is not null");
  }
 
  private void start() {
    Dao dao = new ContactsPU();
    SqlClause.update("Contact")
            .append("set complexName.full = name")
            .dao(dao)
            .execute();
  }
 
}