/*

  * Copyright 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/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.rice.kim.api.jaxb;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.core.util.jaxb.StringMapEntry;

 import javax.xml.bind.UnmarshalException;

 import javax.xml.bind.annotation.adapters.NormalizedStringAdapter;

 import javax.xml.bind.annotation.adapters.XmlAdapter;

 import java.util.HashMap;

 import java.util.Map;

 /**

  * An XML adapter that converts between PermissionDetailList objects and Map<String, String> objects.

  * Unmarshalled keys and values will automatically be trimmed if non-null.

  * 

  * <p>This adapter will throw an exception during unmarshalling if blank or duplicate keys are encountered.

  * 

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

  */

 public class PermissionDetailListAdapter extends XmlAdapter<PermissionDetailList,Map<String, String>> {

     /**

      * @see javax.xml.bind.annotation.adapters.XmlAdapter#unmarshal(java.lang.Object)

      */

     @Override

     public Map<String, String> unmarshal(PermissionDetailList v) throws Exception {

         if (v != null) {

             NormalizedStringAdapter normalizedStringAdapter = new NormalizedStringAdapter();

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

             for (StringMapEntry stringMapEntry : v.getPermissionDetails()) {

                 String tempKey = normalizedStringAdapter.unmarshal(stringMapEntry.getKey());

                 if (StringUtils.isBlank(tempKey)) {

                     throw new UnmarshalException("Cannot create a permission detail entry with a blank key");

                 } else if (map.containsKey(tempKey)) {

                     throw new UnmarshalException("Cannot create more than one permission detail entry with a key of \"" + tempKey + "\"");

                 }

                 map.put(tempKey, normalizedStringAdapter.unmarshal(stringMapEntry.getValue()));

             }

         }

         return null;

     }

     /**

      * @see javax.xml.bind.annotation.adapters.XmlAdapter#marshal(java.lang.Object)

      */

     @Override

     public PermissionDetailList marshal(Map<String, String> v) throws Exception {

         return (v != null) ? new PermissionDetailList(v) : null;

     }

 }