public void checkSchema(String schema) throws LiquibaseException {
   Connection connection = resolveConnection();
   ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
   ResourceAccessor resourceAccessor = new ClassLoaderResourceAccessor(classLoader);
   Database database =
       DatabaseFactory.getInstance()
           .findCorrectDatabaseImplementation(new JdbcConnection(connection));
   Liquibase liquibase = new Liquibase(schema, resourceAccessor, database);
   liquibase.forceReleaseLocks();
   LOG.info("Comprobando actualizaciones de esquema de BBDD");
   liquibase.update("");
   LOG.info("Comprobacion de esquema de BBDD finalizada");
   try {
     connection.close();
   } catch (SQLException ignore) {
   }
 }
 public void contextInitialized(ServletContextEvent arg0) {
   try {
     ConfigDBMapper.getInstance().setDefaultConnectionName("fatec");
     Connection conn = ConfigDBMapper.getInstance().getDefaultConnection();
     Database database =
         DatabaseFactory.getInstance().findCorrectDatabaseImplementation(new JdbcConnection(conn));
     Liquibase liquibase =
         new Liquibase(
             "br/com/fatec/aulas/liquibase/changelog-master.xml",
             new ClassLoaderResourceAccessor(),
             database);
     liquibase.forceReleaseLocks();
     liquibase.update("fatec");
     conn.prepareStatement("COMMIT;").execute();
   } catch (Exception e) {
     // TODO: handle exception
   }
 }