/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.syncope.core.persistence.jpa.validation.entity;
  
  import java.text.ParseException;
  import javax.validation.ConstraintValidatorContext;
  import org.apache.syncope.common.lib.types.EntityViolationType;
  import org.apache.syncope.core.persistence.api.entity.task.SchedTask;
  import org.quartz.CronExpression;
  
  public class SchedTaskValidator extends AbstractValidator<SchedTaskCheck, SchedTask> {
  
      @Override
      public boolean isValid(final SchedTask task, final ConstraintValidatorContext context) {
          boolean isValid = true;
          if (task.getCronExpression() != null) {
              try {
                  new CronExpression(task.getCronExpression());
              } catch (ParseException e) {
                  LOG.error("Invalid cron expression '" + task.getCronExpression() + '\'', e);
                  isValid = false;
  
                  context.disableDefaultConstraintViolation();
                  context.buildConstraintViolationWithTemplate(
                          getTemplate(EntityViolationType.InvalidSchedTask, "Invalid cron expression")).
                          addPropertyNode("cronExpression").addConstraintViolation();
              }
          }
  
          return isValid;
      }
  }