| // Copyright 2004 The Apache Software Foundation |
| // |
| // Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0 |
| // |
| // 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.apache.tapestry.contrib.table.model; |
| |
| /** |
| * An interface for converting an object to its primary key and back. |
| * Typically used to determine how to store a given object as a hidden |
| * value when rendering a form. |
| * |
| * @version $Id$ |
| * @author mb |
| * @since 3.0 |
| */ |
| public interface IPrimaryKeyConvertor |
| { |
| /** |
| * Gets the serializable primary key of the given value |
| * |
| * @param objValue the value for which a primary key needs to be extracted |
| * @return the serializable primary key of the value |
| */ |
| Object getPrimaryKey(Object objValue); |
| |
| /** |
| * Gets the value corresponding the given primary key |
| * |
| * @param objPrimaryKey the primary key for which a value needs to be generated |
| * @return the generated value corresponding to the given primary key |
| */ |
| Object getValue(Object objPrimaryKey); |
| } |