| /****************************************************************************** |
| * Copyright (c) 2002, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| ****************************************************************************/ |
| |
| package org.eclipse.gmf.runtime.common.core.service; |
| |
| /** |
| * The interface for all service provider operations. |
| * <p> |
| * Service implementers are expected to expose service specific classes |
| * implementing this interface. |
| * </p> |
| * <p> |
| * Service provider implementers never need to implement this interface, they |
| * instead use the service specific implementation in their provider |
| * implementation. |
| * </p> |
| * |
| * @see IProvider#provides |
| */ |
| public interface IOperation { |
| |
| /** |
| * Executes this operation on the specified provider. |
| * <p> |
| * Service implementers generally implement this method by first casting the |
| * provider to their service specific {@link IProvider}-derived class and |
| * then by delegating it the execution. Delegation is accomplished through |
| * the service specific provider derived class API. |
| * </p> |
| * |
| * @param provider |
| * The provider on which to execute the operation. |
| * @return The result of executing this operation. |
| */ |
| public Object execute(IProvider provider); |
| |
| } |
