/*

  * 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.keyvalues;

 import org.apache.commons.beanutils.PropertyUtils;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import org.kuali.rice.core.util.ConcreteKeyValue;

 import org.kuali.rice.core.util.KeyValue;

 import org.kuali.rice.krad.bo.PersistableBusinessObject;

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

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

 import org.springframework.transaction.annotation.Transactional;

 import java.lang.reflect.InvocationTargetException;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.List;

 /**

  * This class is a Generic ValuesFinder that builds the list of KeyValuePairs it returns

  * in getKeyValues() based on a BO along with a keyAttributeName and labelAttributeName

  * that are specified.

  */

 @Transactional

 public class PersistableBusinessObjectValuesFinder <T extends PersistableBusinessObject> extends KeyValuesBase {

     private static final Log LOG = LogFactory.getLog(PersistableBusinessObjectValuesFinder.class);

     private Class<T> businessObjectClass;

     private String keyAttributeName;

     private String labelAttributeName;

     private boolean includeKeyInDescription = false;

     private boolean includeBlankRow = false;

     /**

      * Build the list of KeyValues using the key (keyAttributeName) and

      * label (labelAttributeName) of the list of all business objects found

      * for the BO class specified.

      *

      * @see org.kuali.keyvalues.KeyValuesFinder#getKeyValues()

      */

     @Override

         public List<KeyValue> getKeyValues() {

             List<KeyValue> labels = new ArrayList<KeyValue>();

             try {

                 KeyValuesService boService = KRADServiceLocator.getKeyValuesService();

             Collection<T> objects = boService.findAll(businessObjectClass);

             if(includeBlankRow) {

                     labels.add(new ConcreteKeyValue("", ""));

             }

             for (T object : objects) {

                     Object key = PropertyUtils.getProperty(object, keyAttributeName);

                     String label = (String)PropertyUtils.getProperty(object, labelAttributeName);

                     if (includeKeyInDescription) {

                         label = key + " - " + label;

                     }

                     labels.add(new ConcreteKeyValue(key.toString(), label));

                 }

             } catch (IllegalAccessException e) {

             LOG.debug(e.getMessage(), e);

             LOG.error(e.getMessage());

             throw new RuntimeException("IllegalAccessException occurred while trying to build keyValues List. dataObjectClass: " + businessObjectClass + "; keyAttributeName: " + keyAttributeName + "; labelAttributeName: " + labelAttributeName + "; includeKeyInDescription: " + includeKeyInDescription, e);

             } catch (InvocationTargetException e) {

             LOG.debug(e.getMessage(), e);

             LOG.error(e.getMessage());

             throw new RuntimeException("InvocationTargetException occurred while trying to build keyValues List. dataObjectClass: " + businessObjectClass + "; keyAttributeName: " + keyAttributeName + "; labelAttributeName: " + labelAttributeName + "; includeKeyInDescription: " + includeKeyInDescription, e);

             } catch (NoSuchMethodException e) {

             LOG.debug(e.getMessage(), e);

             LOG.error(e.getMessage());

             throw new RuntimeException("NoSuchMethodException occurred while trying to build keyValues List. dataObjectClass: " + businessObjectClass + "; keyAttributeName: " + keyAttributeName + "; labelAttributeName: " + labelAttributeName + "; includeKeyInDescription: " + includeKeyInDescription, e);

             }

         return labels;

     }

     /**

      * @return the dataObjectClass

      */

     public Class<T> getBusinessObjectClass() {

         return this.businessObjectClass;

     }

     /**

      * @param businessObjectClass the dataObjectClass to set

      */

     public void setBusinessObjectClass(Class<T> businessObjectClass) {

         this.businessObjectClass = businessObjectClass;

     }

     /**

      * @return the includeKeyInDescription

      */

     public boolean isIncludeKeyInDescription() {

         return this.includeKeyInDescription;

     }

     /**

      * @param includeKeyInDescription the includeKeyInDescription to set

      */

     public void setIncludeKeyInDescription(boolean includeKeyInDescription) {

         this.includeKeyInDescription = includeKeyInDescription;

     }

     /**

      * @return the keyAttributeName

      */

     public String getKeyAttributeName() {

         return this.keyAttributeName;

     }

     /**

      * @param keyAttributeName the keyAttributeName to set

      */

     public void setKeyAttributeName(String keyAttributeName) {

         this.keyAttributeName = keyAttributeName;

     }

     /**

      * @return the labelAttributeName

      */

     public String getLabelAttributeName() {

         return this.labelAttributeName;

     }

     /**

      * @param labelAttributeName the labelAttributeName to set

      */

     public void setLabelAttributeName(String labelAttributeName) {

         this.labelAttributeName = labelAttributeName;

     }

         /**

          * @return the includeBlankRow

          */

         public boolean isIncludeBlankRow() {

                 return this.includeBlankRow;

         }

         /**

          * @param includeBlankRow the includeBlankRow to set

          */

         public void setIncludeBlankRow(boolean includeBlankRow) {

                 this.includeBlankRow = includeBlankRow;

         }

 }