1 /**
2 * Copyright 2005-2016 The Kuali Foundation
3 *
4 * Licensed under the Educational Community License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.opensource.org/licenses/ecl2.php
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.kuali.rice.krad.datadictionary.validation.constraint;
17
18 /**
19 * An existence constraint is a constraint that requires (or does not require) that some non-empty value exist for this
20 * constrained
21 * object or field.
22 *
23 * @author Kuali Rice Team (rice.collab@kuali.org)
24 * @since 1.1
25 */
26 public interface ExistenceConstraint extends Constraint {
27
28 public Boolean isRequired();
29
30 }