| /******************************************************************************* |
| * Copyright (c) 2007, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.ui.services; |
| |
| /** |
| * A factory for creating services for use with the |
| * <code>org.eclipse.ui.services</code> extension point. You are given a service |
| * locator to look up other services, and can retrieve your parent service (if |
| * one has already been created). |
| * |
| * @since 3.4 |
| */ |
| public abstract class AbstractServiceFactory { |
| |
| /** |
| * When a service locator cannot find a service it will request one from the |
| * registry, which will call this factory create method. |
| * <p> |
| * You can use the locator to get any needed services and a parent service |
| * locator will be provided if you need access to the parent service. If the |
| * parent object return from the parent locator is not <code>null</code> it can |
| * be cast to the service interface that is requested. The parent service |
| * locator will only return the serviceInterface service. |
| * </p> |
| * |
| * @param serviceInterface the service we need to create. Will not be |
| * <code>null</code>. |
| * @param parentLocator A locator that can return a parent service instance |
| * if desired. The parent service can be cast to |
| * serviceInterface. Will not be <code>null</code>. |
| * @param locator the service locator which can be used to retrieve |
| * dependent services. Will not be <code>null</code> |
| * @return the created service or <code>null</code> |
| */ |
| public abstract Object create(Class serviceInterface, IServiceLocator parentLocator, IServiceLocator locator); |
| } |
