/*

  * Copyright 2005-2007 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.kew.attribute;

 import java.util.List;

 /**

  * Represents an extension to a data object.  An Extension is associated with an Attribute which

  * defines the properties of the Extension.  An Extension has a list of ExtensionData which

  * store key-values pairs that represent the extension data.

  *

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

  */

 public interface Extension {

         /**

          * Return the name of the attribute which defines the properties of this Extension.

      * @return String

      */

         public String getAttributeName();

         /**

          * Return the data associated with this Extension.

      * @return List of Extension Data

      */

         public List<ExtensionData> getData();

         /**

          * Returns the value of the ExtensionData with the specified key.

      * @param key for data value

      * @return String

      */

         public String getDataValue(String key);

 }