archiva-modules/archiva-web/archiva-webapp/src/main/java/org/apache/maven/archiva/web/validator/CronExpressionValidator.java

package org.apache.maven.archiva.web.validator;

/*
 * 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.
 */

import com.opensymphony.xwork2.validator.ValidationException;
import com.opensymphony.xwork2.validator.ValidatorContext;
import com.opensymphony.xwork2.validator.validators.FieldValidatorSupport;

/**
 * Reused from Continuum crontab validator
 */
public class CronExpressionValidator
    extends FieldValidatorSupport
{
    public void validate( Object obj )
        throws ValidationException
    {
        String cron = (String) getFieldValue( "cron", obj );

        org.codehaus.plexus.scheduler.CronExpressionValidator cronExpressionValidator =
            new org.codehaus.plexus.scheduler.CronExpressionValidator();

        ValidatorContext ctxt = getValidatorContext();
        if ( !cronExpressionValidator.validate( String.valueOf( cron ) ) )
        {
            ctxt.addActionError( "Invalid cron expression value(s)" );
            return;
        }
    }
}