1 /** 2 * Copyright 2005-2014 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 27 * {@link Constrainable}. 28 * This definition must also implement the interface {@link Constraint}, or a ClassCastException will be thrown. 29 * 30 * An example is {@link LengthConstrainable}, where members of the definition itself need to be made available to the 31 * ConstraintProcessor. 32 * 33 * @param <T> constrainable type 34 * @author Kuali Rice Team (rice.collab@kuali.org) 35 */ 36 public class DefinitionConstraintResolver<T extends Constrainable> implements ConstraintResolver<T> { 37 38 @Override 39 public <C extends Constraint> List<C> resolve(T definition) throws ClassCastException { 40 if (definition instanceof Constraint) { 41 @SuppressWarnings("unchecked") C constraint = (C) definition; 42 return Collections.singletonList(constraint); 43 } 44 /* else if(definiton instanceof InputField){ 45 C constraint = (C)definition.get 46 }*/ 47 throw new ClassCastException( 48 "DefinitionConstraintResolver can only be used for a definition that implements both Constraint and Constrainable, or derives from a class that does."); 49 } 50 51 }