/*

  * Copyright 2011 The Kuali Foundation

  *

  * Licensed under the Educational Community 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://www.opensource.org/licenses/ecl1.php

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.kuali.rice.kns.datadictionary.validation.constraint.provider;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 import org.kuali.rice.kns.datadictionary.validation.capability.Constrainable;

 import org.kuali.rice.kns.datadictionary.validation.constraint.Constraint;

 import org.kuali.rice.kns.datadictionary.validation.constraint.resolver.ConstraintResolver;

 /**

  * A class that implements a simple in memory storage map of constraint resolvers. This provides a convenient base class

  * from which other constraint providers can be derived. 

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  * @since 1.1

  */

 public abstract class BaseConstraintProvider<T extends Constrainable> implements ConstraintProvider<T> {

         protected Map<String, ConstraintResolver<T>> resolverMap;

         public void init() {

                 if (resolverMap == null)

                         resolverMap = new HashMap<String, ConstraintResolver<T>>();

         }

         /**

          * @see org.kuali.rice.kns.datadictionary.validation.constraint.provider.ConstraintProvider#getConstraints(org.kuali.rice.kns.datadictionary.validation.capability.Constrainable, java.lang.Class)

          */

         @Override

         public List<Constraint> getConstraints(T definition, Class<? extends Constraint> constraintType) {

                 if (resolverMap == null)

                         init();

                 ConstraintResolver<T> resolver = resolverMap.get(constraintType.getName());

                 if (resolver == null)

                         return null;

                 return resolver.resolve(definition);

         }

         /**

          * @return the resolverMap

          */

         public Map<String, ConstraintResolver<T>> getResolverMap() {

                 return this.resolverMap;

         }

         /**

          * @param resolverMap the resolverMap to set

          */

         public void setResolverMap(Map<String, ConstraintResolver<T>> resolverMap) {

                 this.resolverMap = resolverMap;

         }

 }