/**
* The contents of this file are subject to the OpenMRS Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://license.openmrs.org
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* Copyright (C) OpenMRS, LLC. All Rights Reserved.
*/
package org.openmrs.logic.op;
/**
* The Exists operator test whether a criteria will exist for person or not.<br />
* <br />
* Example: <br />
* -
* <code>logicService.parse("EncounterDataSource.ENCOUNTER_KEY").equals("ADULTRETURN").exists();</code>
* <br />
* The above will give us a criteria to test whether ADULTRETURN encounter exists or not
*/
public class Exists implements TransformOperator {
public String toString() {
return "EXISTS";
}
}