/*

  * 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.student.datadictionary;

 import java.io.IOException;

 import java.util.ArrayList;

 import java.util.LinkedHashMap;

 import java.util.List;

 import java.util.Map;

 import org.kuali.rice.kns.datadictionary.DataObjectEntry;

 import org.kuali.student.common.util.constants.CommonServiceConstants;

 import org.kuali.student.datadictionary.dto.DictionaryEntryInfo;

 import org.kuali.student.datadictionary.service.DataDictionaryService;

 import org.kuali.student.r2.common.dto.ContextInfo;

 import org.kuali.student.r2.common.exceptions.DoesNotExistException;

 import org.kuali.student.r2.common.exceptions.MissingParameterException;

 import org.kuali.student.r2.common.exceptions.OperationFailedException;

 import org.kuali.student.r2.common.exceptions.PermissionDeniedException;

 import org.springframework.context.ApplicationContext;

 import org.springframework.context.support.ClassPathXmlApplicationContext;

 /**

  * Dictionary Service implementation that reads the dictionary from the spring beans and feeds

  * both the Student dictionary and the RICE dictionary

  *

  * @author nwright

  */

 public class DataDictionaryServiceImpl implements DataDictionaryService, RiceDataDictionaryServiceInfc {

     private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(DataDictionaryServiceImpl.class);

     private String serviceNamespaceSuffix;

     private Map<String, DictionaryEntryInfo> studMap;

     private Map<String, DataObjectEntry> riceMap;

     public DataDictionaryServiceImpl() {

     }

     public String getServiceNamespaceSuffix() {

         return serviceNamespaceSuffix;

     }

     public void setServiceNamespaceSuffix(String serviceNamespaceSuffix) {

         this.serviceNamespaceSuffix = serviceNamespaceSuffix;

     }

     public void setDictionaryLocations(List<String> locations) throws IOException {

         studMap = new LinkedHashMap<String, DictionaryEntryInfo>();

         riceMap = new LinkedHashMap<String, DataObjectEntry>();

         for (String location : locations) {

             ApplicationContext ac = new ClassPathXmlApplicationContext(location);

             Map<String, DataObjectEntry> beansOfType =

                     (Map<String, DataObjectEntry>) ac.getBeansOfType(DataObjectEntry.class);

             for (DataObjectEntry entry : beansOfType.values()) {

                 LOG.debug(entry.getObjectClass());

                 riceMap.put(entry.getFullClassName(), entry);

                 studMap.put(calcRefObjectURI (entry.getObjectClass()), new Rice2StudentDictionaryEntryConverter().convert(entry));

             }

         }

     }

     private String calcRefObjectURI (Class<?> objectClass) {

      return CommonServiceConstants.REF_OBJECT_URI_GLOBAL_PREFIX + this.serviceNamespaceSuffix + "/" + objectClass.getSimpleName();

     }

     @Override

     public DictionaryEntryInfo getDataDictionaryEntry(String entryKey, ContextInfo context)

             throws OperationFailedException,

             MissingParameterException,

             PermissionDeniedException,

             DoesNotExistException {

         DictionaryEntryInfo entry = studMap.get(entryKey);

         if (entry == null) {

             throw new DoesNotExistException(entryKey);

         }

         return entry;

     }

     @Override

     public List<String> getDataDictionaryEntryKeys(ContextInfo context)

             throws OperationFailedException,

             MissingParameterException,

             PermissionDeniedException {

         return new ArrayList(studMap.keySet());

     }

     @Override

     public DataObjectEntry getDataObjectEntry(String entryKey) {

         return riceMap.get(entryKey);

     }

 }