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Diffstat (limited to 'bundles/org.eclipse.equinox.registry/src/org/eclipse/core/runtime/dynamichelpers/IExtensionTracker.java')
| -rw-r--r-- | bundles/org.eclipse.equinox.registry/src/org/eclipse/core/runtime/dynamichelpers/IExtensionTracker.java | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/bundles/org.eclipse.equinox.registry/src/org/eclipse/core/runtime/dynamichelpers/IExtensionTracker.java b/bundles/org.eclipse.equinox.registry/src/org/eclipse/core/runtime/dynamichelpers/IExtensionTracker.java deleted file mode 100644 index 663a1af04..000000000 --- a/bundles/org.eclipse.equinox.registry/src/org/eclipse/core/runtime/dynamichelpers/IExtensionTracker.java +++ /dev/null @@ -1,112 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2004, 2008 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.core.runtime.dynamichelpers; - -import org.eclipse.core.internal.runtime.ReferenceHashSet; -import org.eclipse.core.runtime.IExtension; - -/** - * An extension tracker keeps associations between extensions and their derived objects on an extension basis. - * All extensions being added in a tracker will automatically be removed when the extension is uninstalled from the registry. - * Users interested in extension removal can register a handler that will let them know when an object is being removed. - * <p> - * This interface can be used without OSGi running. - * </p><p> - * This interface is not intended to be implemented by clients. - * </p> - * @since 3.1 - * @noimplement This interface is not intended to be implemented by clients. - */ -public interface IExtensionTracker { - - /** - * Constant for strong (normal) reference holding. - * - * Value <code>1</code>. - */ - public static final int REF_STRONG = ReferenceHashSet.HARD; - - /** - * Constant for soft reference holding. - * - * Value <code>2</code>. - */ - public static final int REF_SOFT = ReferenceHashSet.SOFT; - - /** - * Constant for weak reference holding. - * - * Value <code>3</code>. - */ - public static final int REF_WEAK = ReferenceHashSet.WEAK; - - /** - * Register an extension change handler with this tracker using the given filter. - * - * @param handler the handler to be registered - * @param filter the filter to use to choose interesting changes - */ - public void registerHandler(IExtensionChangeHandler handler, IFilter filter); - - /** - * Unregister the given extension change handler previously registered with this tracker. - * - * @param handler the handler to be unregistered - */ - public void unregisterHandler(IExtensionChangeHandler handler); - - /** - * Create an association between the given extension and the given object. - * The referenceType indicates how strongly the object is being kept in memory. - * There is 3 possible values: {@link #REF_STRONG}, {@link #REF_SOFT}, {@link #REF_WEAK}. - * - * @param extension the extension - * @param object the object to associate with the extension - * @param referenceType one of REF_STRONG, REF_SOFT, REF_WEAK - * @see #REF_STRONG - * @see #REF_SOFT - * @see #REF_WEAK - */ - public void registerObject(IExtension extension, Object object, int referenceType); - - /** - * Remove an association between the given extension and the given object. - * - * @param extension the extension under which the object has been registered - * @param object the object to unregister - */ - public void unregisterObject(IExtension extension, Object object); - - /** - * Remove all the objects associated with the given extension. Return - * the removed objects. - * - * @param extension the extension for which the objects are removed - * @return the objects that were associated with the extension - */ - public Object[] unregisterObject(IExtension extension); - - /** - * Return all the objects that have been associated with the given extension. - * All objects registered strongly will be return unless they have been unregistered. - * The objects registered softly or weakly may not be returned if they have been garbage collected. - * Return an empty array if no associations exist. - * - * @param extension the extension for which the object must be returned - * @return the array of associated objects - */ - public Object[] getObjects(IExtension extension); - - /** - * Close the tracker. All registered objects are freed and all handlers are being automatically removed. - */ - public void close(); -} |