/*

  * Copyright 2006-2011 The Kuali Foundation

  *

  * Licensed under the Educational Community License, Version 2.0 (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/ecl2.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.krms.impl.repository;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.krad.service.BusinessObjectService;

 import org.kuali.rice.krms.api.repository.context.ContextDefinition;

 import org.kuali.rice.krms.impl.util.KRMSPropertyConstants;

 import java.util.*;

 /**

  * This is the interface for accessing KRMS repository Context related

  * business objects. 

  * 

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

  *

  */

 public final class ContextBoServiceImpl implements ContextBoService {

     private BusinessObjectService businessObjectService;

         /**

          * This method will create a {@link ContextDefintion} as described

          * by the parameter passed in.

          * 

          * @see org.kuali.rice.krms.impl.repository.ContextBoService#createContext(org.kuali.rice.krms.api.repository.context.ContextDefinition)

          */

         @Override

         public ContextDefinition createContext(ContextDefinition context) {

                 if (context == null){

                 throw new IllegalArgumentException("context is null");

                 }

                 final String contextIdKey = context.getId();

                 final ContextDefinition existing = getContextByContextId(contextIdKey);

                 if (existing != null){

             throw new IllegalStateException("the context to create already exists: " + context);                        

                 }        

                 ContextBo bo = (ContextBo)businessObjectService.save(ContextBo.from(context));

                 return ContextBo.to(bo);

         }

         /**

          * This method updates an existing Context in the repository.

          * 

          * @see org.kuali.rice.krms.impl.repository.ContextBoService#updateContext(org.kuali.rice.krms.api.repository.context.ContextDefinition)

          */

         @Override

         public void updateContext(ContextDefinition context) {

                 if (context == null){

                 throw new IllegalArgumentException("context is null");

                 }

                 // must already exist to be able to update

                 final String contextIdKey = context.getId();

                 final ContextBo existing = businessObjectService.findBySinglePrimaryKey(ContextBo.class, contextIdKey);

         if (existing == null) {

             throw new IllegalStateException("the context does not exist: " + context);

         }

         final ContextDefinition toUpdate;

         if (!existing.getId().equals(context.getId())){

                         // if passed in id does not match existing id, correct it

                 final ContextDefinition.Builder builder = ContextDefinition.Builder.create(context);

                 builder.setId(existing.getId());

                 toUpdate = builder.build();

         } else {

                 toUpdate = context;

         }

                 // copy all updateable fields to bo

                 ContextBo boToUpdate = ContextBo.from(toUpdate);

                 // delete any old, existing attributes

                 Map<String,String> fields = new HashMap<String,String>(1);

                 fields.put(KRMSPropertyConstants.Context.CONTEXT_ID, toUpdate.getId());

                 businessObjectService.deleteMatching(ContextAttributeBo.class, fields);

                 // update the rule and create new attributes

         businessObjectService.save(boToUpdate);

         }

         /**

          * This overridden method ...

          * 

          * @see org.kuali.rice.krms.impl.repository.ContextBoService#getContextsByRuleId(java.lang.String)

          */

         @Override

         public ContextDefinition getContextByContextId(String contextId) {

                 if (StringUtils.isBlank(contextId)){

             return null;                        

                 }

                 ContextBo bo = businessObjectService.findBySinglePrimaryKey(ContextBo.class, contextId);

                 return ContextBo.to(bo);

         }

         /**

          * 

          * This overridden method ...

          * 

          * @see org.kuali.rice.krms.impl.repository.ContextBoService#getContextByNameAndNamespace(java.lang.String, java.lang.String)

          */

         public ContextDefinition getContextByNameAndNamespace( String name, String namespace ){

                 if (StringUtils.isBlank(name)){

                         throw new IllegalArgumentException("name is null or blank");

                 }

                 if (StringUtils.isBlank(namespace)){

                         throw new IllegalArgumentException("namespace is null or blank");

                 }

         final Map<String, Object> map = new HashMap<String, Object>();

         map.put("name", name);

         map.put("namespace", namespace);

                 ContextBo bo = businessObjectService.findByPrimaryKey(ContextBo.class, map);

                 return ContextBo.to(bo);

         }

 //        /**

 //         * This overridden method ...

 //         * 

 //         * @see org.kuali.rice.krms.impl.repository.ContextBoService#createContextAttribute(org.kuali.rice.krms.api.repository.ContextAttribute)

 //         */

 //        @Override

 //        public void createContextAttribute(ContextAttribute attribute) {

 //                if (attribute == null){

 //                throw new IllegalArgumentException("context attribute is null");

 //                }

 //                final String attrIdKey = attribute.getId();

 //                final ContextAttribute existing = getContextAttributeById(attrIdKey);

 //                if (existing != null){

 //            throw new IllegalStateException("the context attribute to create already exists: " + attribute);                        

 //                }

 //                

 //                businessObjectService.save(ContextAttributeBo.from(attribute));                

 //        }

 //

 //        /**

 //         * This overridden method ...

 //         * 

 //         * @see org.kuali.rice.krms.impl.repository.ContextBoService#updateContextAttribute(org.kuali.rice.krms.api.repository.ContextAttribute)

 //         */

 //        @Override

 //        public void updateContextAttribute(ContextAttribute attribute) {

 //                if (attribute == null){

 //                throw new IllegalArgumentException("context attribute is null");

 //                }

 //                final String attrIdKey = attribute.getId();

 //                final ContextAttribute existing = getContextAttributeById(attrIdKey);

 //        if (existing == null) {

 //            throw new IllegalStateException("the context attribute does not exist: " + attribute);

 //        }

 //        final ContextAttribute toUpdate;

 //        if (!existing.getId().equals(attribute.getContextId())){

 //                final ContextAttribute.Builder builder = ContextAttribute.Builder.create(attribute);

 //                builder.setId(existing.getId());

 //                toUpdate = builder.build();

 //        } else {

 //                toUpdate = attribute;

 //        }

 //        

 //        businessObjectService.save(ContextAttributeBo.from(toUpdate));                

 //        }

 //        

 //        

 //        /**

 //         * This method ...

 //         * 

 //         * @see org.kuali.rice.krms.impl.repository.ContextBoService#getContextsByRuleId(java.lang.String)

 //         */

 //        public ContextAttribute getContextAttributeById(String attrId) {

 //                if (StringUtils.isBlank(attrId)){

 //            return null;                        

 //                }

 //                ContextAttributeBo bo = businessObjectService.findBySinglePrimaryKey(ContextAttributeBo.class, attrId);

 //                return ContextAttributeBo.to(bo);

 //        }

     /**

      * Sets the businessObjectService attribute value.

      *

      * @param businessObjectService The businessObjectService to set.

      */

     public void setBusinessObjectService(final BusinessObjectService businessObjectService) {

         this.businessObjectService = businessObjectService;

     }

 }