/**
    * Copyright 2005-2014 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.core.api.criteria.CriteriaLookupService;
  import org.kuali.rice.core.api.criteria.GenericQueryResults;
  import org.kuali.rice.core.api.criteria.LookupCustomizer;
  import org.kuali.rice.core.api.criteria.QueryByCriteria;
  import org.kuali.rice.krad.service.BusinessObjectService;
  import org.kuali.rice.krms.api.repository.reference.ReferenceObjectBinding;
  import org.kuali.rice.krms.api.repository.reference.ReferenceObjectBindingQueryResults;
  import org.kuali.rice.krms.impl.AttributeTransform;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.LinkedList;
  import java.util.List;
  import java.util.Map;
  
  /**
   * Implementation of the @{link ReferenceObjectBindingBoService} interface for accessing  {@link ReferenceObjectBindingBo} related business objects.
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   * 
   */
  public final class ReferenceObjectBindingBoServiceImpl
      implements ReferenceObjectBindingBoService
  {
  
      private BusinessObjectService businessObjectService;
      private KrmsAttributeDefinitionService attributeDefinitionService;
      private CriteriaLookupService criteriaLookupService;
  
      /**
       * Sets the value of BusinessObjectService to the given value.
       * 
       * @param businessObjectService the BusinessObjectService value to set.
       * 
       */
      public void setBusinessObjectService(BusinessObjectService businessObjectService) {
          this.businessObjectService = businessObjectService;
      }
  
      public void setCriteriaLookupService(CriteriaLookupService criteriaLookupService) {
          this.criteriaLookupService = criteriaLookupService;
      }
  
      public CriteriaLookupService getCriteriaLookupService() {
          if ( criteriaLookupService == null ) {
              criteriaLookupService = KrmsRepositoryServiceLocator.getCriteriaLookupService();
          }
          return this.criteriaLookupService;
      }
  
      public void setAttributeDefinitionService(KrmsAttributeDefinitionService attributeDefinitionService) {
          this.attributeDefinitionService = attributeDefinitionService;
      }
  
      public KrmsAttributeDefinitionService getAttributeDefinitionService() {
          if (attributeDefinitionService == null) {
              attributeDefinitionService = KrmsRepositoryServiceLocator.getKrmsAttributeDefinitionService();
          }
          return attributeDefinitionService;
      }
  
      @Override
      public ReferenceObjectBinding createReferenceObjectBinding(ReferenceObjectBinding referenceObjectBinding) {
          incomingParamCheck(referenceObjectBinding , "referenceObjectBinding");
          final String referenceObjectBindingIdKey = referenceObjectBinding.getId();
          final ReferenceObjectBinding existing = getReferenceObjectBinding(referenceObjectBindingIdKey);
          if (existing != null){ throw new IllegalStateException("the ReferenceObjectBinding to create already exists: " + referenceObjectBinding);	}
          ReferenceObjectBindingBo bo = (ReferenceObjectBindingBo)businessObjectService.save(from(referenceObjectBinding));
          return ReferenceObjectBindingBo.to(bo);
      }
  
      @Override
      public ReferenceObjectBinding getReferenceObjectBinding(String referenceObjectBindingId) {
          incomingParamCheck(referenceObjectBindingId , "referenceObjectBindingId");
          ReferenceObjectBindingBo bo = businessObjectService.findBySinglePrimaryKey(ReferenceObjectBindingBo.class, referenceObjectBindingId);
          return ReferenceObjectBindingBo.to(bo);
      }
  
      @Override
      public void updateReferenceObjectBinding(ReferenceObjectBinding referenceObjectBinding) {
         incomingParamCheck(referenceObjectBinding , "referenceObjectBinding");
         final ReferenceObjectBinding existing = getReferenceObjectBinding(referenceObjectBinding.getId());
         if (existing == null){ throw new IllegalStateException("the ReferenceObjectBinding to update does not exists: " + referenceObjectBinding);}
         final ReferenceObjectBinding toUpdate;
         if (!existing.getId().equals(referenceObjectBinding.getId())){
             // if passed in id does not match existing id, correct it
             final ReferenceObjectBinding.Builder builder = ReferenceObjectBinding.Builder.create(referenceObjectBinding);
             builder.setId(existing.getId());
             toUpdate = builder.build();
         } else {
             toUpdate = referenceObjectBinding;
         }
 
         // copy all updateable fields to bo
         ReferenceObjectBindingBo boToUpdate = from(toUpdate);
 
         // update the rule and create new attributes
          businessObjectService.save(boToUpdate);
     }
 
     @Override
     public void deleteReferenceObjectBinding(String referenceObjectBindingId) {
         incomingParamCheck(referenceObjectBindingId , "referenceObjectBindingId");
         final ReferenceObjectBinding existing = getReferenceObjectBinding(referenceObjectBindingId);
         if (existing == null){ throw new IllegalStateException("the ReferenceObjectBinding to delete does not exists: " + referenceObjectBindingId);}
         businessObjectService.delete(from(existing));
     }
 
     @Override
     public List<ReferenceObjectBinding> findReferenceObjectBindingsByCollectionName(String collectionName) {
         if (org.apache.commons.lang.StringUtils.isBlank(collectionName)) {
             throw new IllegalArgumentException("collectionName is null or blank");
         }
         final Map<String, Object> map = new HashMap<String, Object>();
         map.put("collectionName", collectionName);
         List<ReferenceObjectBindingBo> bos = (List<ReferenceObjectBindingBo>) businessObjectService.findMatching(ReferenceObjectBindingBo.class, map);
         return convertBosToImmutables(bos);
     }
 
     @Override
     public List<ReferenceObjectBinding> findReferenceObjectBindingsByKrmsDiscriminatorType(String krmsDiscriminatorType) {
         if (org.apache.commons.lang.StringUtils.isBlank(krmsDiscriminatorType)) {
             throw new IllegalArgumentException("krmsDiscriminatorType is null or blank");
         }
         final Map<String, Object> map = new HashMap<String, Object>();
         map.put("krmsDiscriminatorType", krmsDiscriminatorType);
         List<ReferenceObjectBindingBo> bos = (List<ReferenceObjectBindingBo>) businessObjectService.findMatching(ReferenceObjectBindingBo.class, map);
         return convertBosToImmutables(bos);
     }
 
     @Override
     public List<ReferenceObjectBinding> findReferenceObjectBindingsByKrmsObject(String krmsObjectId) {
         if (org.apache.commons.lang.StringUtils.isBlank(krmsObjectId)) {
             throw new IllegalArgumentException("krmsObjectId is null or blank");
         }
         final Map<String, Object> map = new HashMap<String, Object>();
         map.put("krmsObjectId", krmsObjectId);
         List<ReferenceObjectBindingBo> bos = (List<ReferenceObjectBindingBo>) businessObjectService.findMatching(ReferenceObjectBindingBo.class, map);
         return convertBosToImmutables(bos);
     }
 
     @Override
     public List<ReferenceObjectBinding> findReferenceObjectBindingsByNamespace(String namespace) {
         if (org.apache.commons.lang.StringUtils.isBlank(namespace)) {
             throw new IllegalArgumentException("namespace is null or blank");
         }
         final Map<String, Object> map = new HashMap<String, Object>();
         map.put("namespace", namespace);
         List<ReferenceObjectBindingBo> bos = (List<ReferenceObjectBindingBo>) businessObjectService.findMatching(ReferenceObjectBindingBo.class, map);
         return convertBosToImmutables(bos);
     }
 
     @Override
     public List<ReferenceObjectBinding> findReferenceObjectBindingsByReferenceDiscriminatorType(String referenceDiscriminatorType) {
         if (org.apache.commons.lang.StringUtils.isBlank(referenceDiscriminatorType)) {
             throw new IllegalArgumentException("referenceDiscriminatorType is null or blank");
         }
         final Map<String, Object> map = new HashMap<String, Object>();
         map.put("referenceDiscriminatorType", referenceDiscriminatorType);
         List<ReferenceObjectBindingBo> bos = (List<ReferenceObjectBindingBo>) businessObjectService.findMatching(ReferenceObjectBindingBo.class, map);
         return convertBosToImmutables(bos);
     }
 
     @Override
     public List<ReferenceObjectBinding> findReferenceObjectBindingsByReferenceObject(String referenceObjectId) {
         if (org.apache.commons.lang.StringUtils.isBlank(referenceObjectId)) {
             throw new IllegalArgumentException("referenceObjectId is null or blank");
         }
         final Map<String, Object> map = new HashMap<String, Object>();
         map.put("referenceObjectId", referenceObjectId);
         List<ReferenceObjectBindingBo> bos = (List<ReferenceObjectBindingBo>) businessObjectService.findMatching(ReferenceObjectBindingBo.class, map);
         return convertBosToImmutables(bos);
     }
 
     @Override
     public List<String> findReferenceObjectBindingIds(final QueryByCriteria queryByCriteria) {
         incomingParamCheck(queryByCriteria, "queryByCriteria");
         ReferenceObjectBindingQueryResults results = findReferenceObjectBindings(queryByCriteria);
         List<String> result = new ArrayList<String>();
         for (ReferenceObjectBinding referenceObjectBinding: results.getResults()) {
             result.add(referenceObjectBinding.getId());
         }
         return Collections.unmodifiableList(result);
     }
 
     @Override
     public ReferenceObjectBindingQueryResults findReferenceObjectBindings(final QueryByCriteria queryByCriteria) {
         LookupCustomizer.Builder<ReferenceObjectBindingBo> lc = LookupCustomizer.Builder.create();
         lc.setPredicateTransform(AttributeTransform.getInstance());
         GenericQueryResults<ReferenceObjectBindingBo> results = getCriteriaLookupService().lookup(ReferenceObjectBindingBo.class, queryByCriteria, lc.build());
         ReferenceObjectBindingQueryResults.Builder builder = ReferenceObjectBindingQueryResults.Builder.create();
         builder.setMoreResultsAvailable(results.isMoreResultsAvailable());
         builder.setTotalRowCount(results.getTotalRowCount());
         final List<ReferenceObjectBinding.Builder> ims = new ArrayList<ReferenceObjectBinding.Builder>();
         for (ReferenceObjectBindingBo bo : results.getResults()) {
             ims.add(ReferenceObjectBinding.Builder.create(bo));
         }
         builder.setResults(ims);
         return builder.build();
     }
 
     public List<ReferenceObjectBinding> convertBosToImmutables(final Collection<ReferenceObjectBindingBo> referenceObjectBindingBos) {
         List<ReferenceObjectBinding> immutables = new LinkedList<ReferenceObjectBinding>();
         if (referenceObjectBindingBos != null) {
             ReferenceObjectBinding immutable = null;
             for (ReferenceObjectBindingBo bo : referenceObjectBindingBos ) {
                 immutable = to(bo);
                 immutables.add(immutable);
             }
         }
         return Collections.unmodifiableList(immutables);
     }
 
     @Override
     public ReferenceObjectBinding to(ReferenceObjectBindingBo referenceObjectBindingBo) {
         return ReferenceObjectBindingBo.to(referenceObjectBindingBo);
     }
 
     public ReferenceObjectBindingBo from(ReferenceObjectBinding referenceObjectBinding) {
         return ReferenceObjectBindingBo.from(referenceObjectBinding);
     }
 
     private void incomingParamCheck(Object object, String name) {
         if (object == null) {
             throw new IllegalArgumentException(name + " was null");
         } else if (object instanceof String
                 && StringUtils.isBlank((String)object)) {
             throw new IllegalArgumentException(name + " was blank");
         }
     }
 
 }