| /******************************************************************************* |
| * Copyright (c) 2009, 2016 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.e4.core.contexts; |
| |
| import java.util.WeakHashMap; |
| import org.eclipse.e4.core.internal.contexts.EclipseContext; |
| import org.eclipse.e4.core.internal.contexts.osgi.EclipseContextOSGi; |
| import org.osgi.framework.BundleContext; |
| |
| /** |
| * This factory is used to create new context instances. |
| * @see IEclipseContext |
| * @since 1.3 |
| */ |
| public final class EclipseContextFactory { |
| |
| /** |
| * Creates and returns a new empty context. |
| * @return A new empty context. |
| */ |
| static public IEclipseContext create() { |
| return new EclipseContext(null); |
| } |
| |
| /** |
| * Creates and returns a new empty context. |
| * @return A new empty context. |
| */ |
| static public IEclipseContext create(String name) { |
| IEclipseContext result = create(); |
| result.set(EclipseContext.DEBUG_STRING, name); |
| return result; |
| } |
| |
| private static WeakHashMap<BundleContext, IEclipseContext> serviceContexts = new WeakHashMap<BundleContext, IEclipseContext>(); |
| |
| /** |
| * Returns a context that can be used to lookup OSGi services. A client must never dispose the |
| * provided context, because it may be shared by multiple callers. |
| * |
| * @param bundleContext |
| * The bundle context to use for service lookup |
| * @return A context containing all OSGi services |
| */ |
| public static IEclipseContext getServiceContext(BundleContext bundleContext) { |
| synchronized (serviceContexts) { |
| IEclipseContext result = serviceContexts.get(bundleContext); |
| if (result == null) { |
| result = createServiceContext(bundleContext); |
| serviceContexts.put(bundleContext, result); |
| } |
| return result; |
| } |
| } |
| |
| /** |
| * Creates and returns a new context that can be used to lookup OSGi |
| * services. A client must dispose the provided context. |
| * |
| * @param bundleContext The bundle context to use for service lookup |
| * @return A new context containing all OSGi services |
| * |
| * @since 1.5 |
| */ |
| public static IEclipseContext createServiceContext(BundleContext bundleContext) { |
| IEclipseContext result = new EclipseContextOSGi(bundleContext); |
| result.set(EclipseContext.DEBUG_STRING, "OSGi context for bundle: " + bundleContext.getBundle().getSymbolicName()); //$NON-NLS-1$ |
| return result; |
| } |
| |
| } |