1 /**
2 * Copyright 2005-2012 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.resolver;
17
18 import org.kuali.rice.krad.datadictionary.validation.capability.Constrainable;
19 import org.kuali.rice.krad.datadictionary.validation.capability.LengthConstrainable;
20 import org.kuali.rice.krad.datadictionary.validation.constraint.Constraint;
21
22 import java.util.Collections;
23 import java.util.List;
24
25 /**
26 * An object that returns the constrainable definition itself as a list for a definition implementing the capability {@link Constrainable}.
27 * This definition must also implement the interface {@link Constraint}, or a ClassCastException will be thrown.
28 *
29 * An example is {@link LengthConstrainable}, where members of the definition itself need to be made available to the ConstraintProcessor.
30 *
31 * @author Kuali Rice Team (rice.collab@kuali.org)
32 */
33 public class DefinitionConstraintResolver<T extends Constrainable> implements ConstraintResolver<T> {
34
35 @Override
36 public <C extends Constraint> List<C> resolve(T definition) throws ClassCastException {
37 if (definition instanceof Constraint) {
38 @SuppressWarnings("unchecked")
39 C constraint = (C)definition;
40 return Collections.singletonList(constraint);
41 }
42 /* else if(definiton instanceof InputField){
43 C constraint = (C)definition.get
44 }*/
45 throw new ClassCastException("DefinitionConstraintResolver can only be used for a definition that implements both Constraint and Constrainable, or derives from a class that does.");
46 }
47
48 }