JobType.java

/*
** Module   : JobType.java
** Abstract : enum defining the possible job types.
**
** Copyright (c) 2014-2017, Golden Code Development Corporation.
**
** -#- -I- --Date-- ---------------------------------Description----------------------------------
** 001 CA  20140206 First version.
** 002 CA  20161027 Allow Runnable instances to be configured as jobs, at runtime.
*/
/*
** 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 may find a copy of the GNU Affero GPL version 3 at the following
** location: https://www.gnu.org/licenses/agpl-3.0.en.html
** 
** Additional terms under GNU Affero GPL version 3 section 7:
** 
**   Under Section 7 of the GNU Affero GPL version 3, the following additional
**   terms apply to the works covered under the License.  These additional terms
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*/

package com.goldencode.p2j.scheduler;

/**
 * Definition of possible job types:
 * <ul>
 * <li>{@link #PROCESS} - a P2J process.</li>
 * <li>{@link #CLASS} - a Java class implementing {@link Runnable}.</li>
 * <li>{@link #METHOD} - a method name qualified with the full class name. Must have no 
 *     parameters.</li>
 * <li>{@link #INSTANCE} - a {@link Runnable} instance.</li>
 * </ul>
 */
public enum JobType
{
   PROCESS ("PROCESS"),
   CLASS   ("CLASS"),
   METHOD  ("METHOD"),
   INSTANCE ("INSTANCE");
   
   /** String representation of this job type. */
   private final String type;
   
   /**
    * Initialize a new job type.
    * 
    * @param    type
    *           The job type.
    */
   JobType(String type)
   {
      this.type = type;
   }

   /**
    * Resolve the job type from the given string.
    * 
    * @param    type
    *           The job type.
    *           
    * @return   One of the {@link JobType} values or {@code null} if it can not be resolved.
    */
   public static JobType resolveJobType(String type)
   {
      for (JobType jobType: JobType.values())
      {
         if (jobType.type.equalsIgnoreCase(type))
         {
            return jobType;
         }
      }

      return null;
   }
}