/*

  * Copyright 2006-2007 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.krad.service.impl;

 import java.lang.reflect.InvocationTargetException;

 import java.util.HashMap;

 import java.util.Iterator;

 import java.util.List;

 import java.util.Map;

 import java.util.TreeMap;

 import org.apache.commons.beanutils.PropertyUtils;

 import org.kuali.rice.krad.exception.IntrospectionException;

 public class PersistenceServiceImplBase extends PersistenceServiceStructureImplBase {

         /**

          * @see org.kuali.rice.krad.service.PersistenceMetadataService#getPrimaryKeyFields(java.lang.Object)

          */

         public Map getPrimaryKeyFieldValues(Object persistableObject) {

                 return getPrimaryKeyFieldValues(persistableObject, false);

         }

         /**

          * @see org.kuali.rice.krad.service.PersistenceMetadataService#getPrimaryKeyFields(java.lang.Object,

          *      boolean)

          */

         public Map getPrimaryKeyFieldValues(Object persistableObject, boolean sortFieldNames) {

                 if (persistableObject == null) {

                         throw new IllegalArgumentException("invalid (null) persistableObject");

                 }

                 Map keyValueMap = null;

                 if (sortFieldNames) {

                         keyValueMap = new TreeMap();

                 } else {

                         keyValueMap = new HashMap();

                 }

                 String className = null;

                 String fieldName = null;

                 try {

                         List fields = listPrimaryKeyFieldNames(persistableObject.getClass());

                         for (Iterator i = fields.iterator(); i.hasNext();) {

                                 fieldName = (String) i.next();

                                 className = persistableObject.getClass().getName();

                                 Object fieldValue = PropertyUtils.getSimpleProperty(persistableObject, fieldName);

                                 keyValueMap.put(fieldName, fieldValue);

                         }

                 } catch (IllegalAccessException e) {

                         throw new IntrospectionException("problem accessing property '" + className + "." + fieldName + "'", e);

                 } catch (NoSuchMethodException e) {

                         throw new IntrospectionException("unable to invoke getter for property '" + className + "." + fieldName + "'", e);

                 } catch (InvocationTargetException e) {

                         throw new IntrospectionException("problem invoking getter for property '" + className + "." + fieldName + "'", e);

                 }

                 return keyValueMap;

         }

 }