001/**
002 * Copyright 2005-2015 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.kuali.rice.krad.datadictionary.validation.constraint.provider;
017
018import org.kuali.rice.krad.datadictionary.validation.capability.Constrainable;
019import org.kuali.rice.krad.datadictionary.validation.constraint.Constraint;
020import org.kuali.rice.krad.datadictionary.validation.constraint.resolver.ConstraintResolver;
021
022import java.util.HashMap;
023import java.util.List;
024import java.util.Map;
025
026/**
027 * A class that implements a simple in memory storage map of constraint resolvers. This provides a convenient base class
028 * from which other constraint providers can be derived. 
029 * 
030 * @author Kuali Rice Team (rice.collab@kuali.org)
031 * @since 1.1
032 */
033public abstract class BaseConstraintProvider<T extends Constrainable> implements ConstraintProvider<T> {
034        
035        
036        protected Map<String, ConstraintResolver<T>> resolverMap;
037        
038        public void init() {
039                if (resolverMap == null)
040                        resolverMap = new HashMap<String, ConstraintResolver<T>>();
041
042        }
043        
044        /**
045         * @see org.kuali.rice.krad.datadictionary.validation.constraint.provider.ConstraintProvider#getConstraints(org.kuali.rice.krad.datadictionary.validation.capability.Constrainable, java.lang.Class)
046         */
047        @Override
048        public List<Constraint> getConstraints(T definition, Class<? extends Constraint> constraintType) {
049                if (resolverMap == null)
050                        init();
051                
052                ConstraintResolver<T> resolver = resolverMap.get(constraintType.getName());
053
054                if (resolver == null)
055                        return null;
056                
057                return resolver.resolve(definition);
058        }
059
060        /**
061         * @return the resolverMap
062         */
063        public Map<String, ConstraintResolver<T>> getResolverMap() {
064                return this.resolverMap;
065        }
066
067        /**
068         * @param resolverMap the resolverMap to set
069         */
070        public void setResolverMap(Map<String, ConstraintResolver<T>> resolverMap) {
071                this.resolverMap = resolverMap;
072        }
073        
074}