/*
 * Copyright (c) OSGi Alliance (2004, 2016). All Rights Reserved.
 * 
 * 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.
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package org.osgi.framework;

import java.util.EventObject;

import org.osgi.framework.startlevel.FrameworkStartLevel;
import org.osgi.framework.wiring.FrameworkWiring;

A general event from the Framework.

FrameworkEvent objects are delivered to FrameworkListeners when a general event occurs within the OSGi environment. A type code is used to identify the event type for future extendability.

OSGi Alliance reserves the right to extend the set of event types.

Author:$Id: b3072b2d058e70389a52e342ed5f8647b930b8f1 $
See Also:
@Immutable
/** * A general event from the Framework. * * <p> * {@code FrameworkEvent} objects are delivered to {@code FrameworkListener}s * when a general event occurs within the OSGi environment. A type code is used * to identify the event type for future extendability. * * <p> * OSGi Alliance reserves the right to extend the set of event types. * * @Immutable * @see FrameworkListener * @author $Id: b3072b2d058e70389a52e342ed5f8647b930b8f1 $ */
public class FrameworkEvent extends EventObject { static final long serialVersionUID = 207051004521261705L;
Bundle related to the event.
/** * Bundle related to the event. */
private final Bundle bundle;
Exception related to the event.
/** * Exception related to the event. */
private final Throwable throwable;
Type of event.
/** * Type of event. */
private final int type;
The Framework has started.

This event is fired when the Framework has started after all installed bundles that are marked to be started have been started and the Framework has reached the initial start level. The source of this event is the System Bundle.

See Also:
  • The Start Level Specification
/** * The Framework has started. * * <p> * This event is fired when the Framework has started after all installed * bundles that are marked to be started have been started and the Framework * has reached the initial start level. The source of this event is the * System Bundle. * * @see "The Start Level Specification" */
public final static int STARTED = 0x00000001;
An error has occurred.

There was an error associated with a bundle.

/** * An error has occurred. * * <p> * There was an error associated with a bundle. */
public final static int ERROR = 0x00000002;
A FrameworkWiring.refreshBundles operation has completed.

This event is fired when the Framework has completed the refresh bundles operation initiated by a call to the FrameworkWiring.refreshBundles method. The source of this event is the System Bundle.

See Also:
Since:1.2
/** * A FrameworkWiring.refreshBundles operation has completed. * * <p> * This event is fired when the Framework has completed the refresh bundles * operation initiated by a call to the FrameworkWiring.refreshBundles * method. The source of this event is the System Bundle. * * @since 1.2 * @see FrameworkWiring#refreshBundles(java.util.Collection, * FrameworkListener...) */
public final static int PACKAGES_REFRESHED = 0x00000004;
A FrameworkStartLevel.setStartLevel operation has completed.

This event is fired when the Framework has completed changing the active start level initiated by a call to the StartLevel.setStartLevel method. The source of this event is the System Bundle.

See Also:
Since:1.2
/** * A FrameworkStartLevel.setStartLevel operation has completed. * * <p> * This event is fired when the Framework has completed changing the active * start level initiated by a call to the StartLevel.setStartLevel method. * The source of this event is the System Bundle. * * @since 1.2 * @see FrameworkStartLevel#setStartLevel(int, FrameworkListener...) */
public final static int STARTLEVEL_CHANGED = 0x00000008;
A warning has occurred.

There was a warning associated with a bundle.

Since:1.3
/** * A warning has occurred. * * <p> * There was a warning associated with a bundle. * * @since 1.3 */
public final static int WARNING = 0x00000010;
An informational event has occurred.

There was an informational event associated with a bundle.

Since:1.3
/** * An informational event has occurred. * * <p> * There was an informational event associated with a bundle. * * @since 1.3 */
public final static int INFO = 0x00000020;
The Framework has stopped.

This event is fired when the Framework has been stopped because of a stop operation on the system bundle. The source of this event is the System Bundle.

Since:1.5
/** * The Framework has stopped. * * <p> * This event is fired when the Framework has been stopped because of a stop * operation on the system bundle. The source of this event is the System * Bundle. * * @since 1.5 */
public final static int STOPPED = 0x00000040;
The Framework has stopped during update.

This event is fired when the Framework has been stopped because of an update operation on the system bundle. The Framework will be restarted after this event is fired. The source of this event is the System Bundle.

Since:1.5
/** * The Framework has stopped during update. * * <p> * This event is fired when the Framework has been stopped because of an * update operation on the system bundle. The Framework will be restarted * after this event is fired. The source of this event is the System Bundle. * * @since 1.5 */
public final static int STOPPED_UPDATE = 0x00000080;
The Framework has stopped and the boot class path has changed.

This event is fired when the Framework has been stopped because of a stop operation on the system bundle and a bootclasspath extension bundle has been installed or updated. The source of this event is the System Bundle.

Since:1.5
/** * The Framework has stopped and the boot class path has changed. * * <p> * This event is fired when the Framework has been stopped because of a stop * operation on the system bundle and a bootclasspath extension bundle has * been installed or updated. The source of this event is the System Bundle. * * @since 1.5 */
public final static int STOPPED_BOOTCLASSPATH_MODIFIED = 0x00000100;
The Framework did not stop before the wait timeout expired.

This event is fired when the Framework did not stop before the wait timeout expired. The source of this event is the System Bundle.

Since:1.5
/** * The Framework did not stop before the wait timeout expired. * * <p> * This event is fired when the Framework did not stop before the wait * timeout expired. The source of this event is the System Bundle. * * @since 1.5 */
public final static int WAIT_TIMEDOUT = 0x00000200;
The Framework has stopped and the framework requires a new class loader to restart.

This event is fired when the Framework has been stopped because of a stop operation on the system bundle and the framework requires a new class loader to be used to restart. For example, if a framework extension bundle has been refreshed. The source of this event is the System Bundle.

Since:1.9
/** * The Framework has stopped and the framework requires a new class loader * to restart. * <p> * This event is fired when the Framework has been stopped because of a stop * operation on the system bundle and the framework requires a new class * loader to be used to restart. For example, if a framework extension * bundle has been refreshed. The source of this event is the System Bundle. * * @since 1.9 */
public final static int STOPPED_SYSTEM_REFRESHED = 0x00000400;
Creates a Framework event.
Params:
  • type – The event type.
  • source – The event source object. This may not be null.
Deprecated:As of 1.2. This constructor is deprecated in favor of using the other constructor with the System Bundle as the event source.
/** * Creates a Framework event. * * @param type The event type. * @param source The event source object. This may not be {@code null}. * @deprecated As of 1.2. This constructor is deprecated in favor of using * the other constructor with the System Bundle as the event * source. */
public FrameworkEvent(int type, Object source) { super(source); this.type = type; this.bundle = null; this.throwable = null; }
Creates a Framework event regarding the specified bundle.
Params:
  • type – The event type.
  • bundle – The event source.
  • throwable – The related exception. This argument may be null if there is no related exception.
/** * Creates a Framework event regarding the specified bundle. * * @param type The event type. * @param bundle The event source. * @param throwable The related exception. This argument may be {@code null} * if there is no related exception. */
public FrameworkEvent(int type, Bundle bundle, Throwable throwable) { super(bundle); this.type = type; this.bundle = bundle; this.throwable = throwable; }
Returns the exception related to this event.
Returns:The related exception or null if none.
/** * Returns the exception related to this event. * * @return The related exception or {@code null} if none. */
public Throwable getThrowable() { return throwable; }
Returns the bundle associated with the event. This bundle is also the source of the event.
Returns:The bundle associated with the event.
/** * Returns the bundle associated with the event. This bundle is also the * source of the event. * * @return The bundle associated with the event. */
public Bundle getBundle() { return bundle; }
Returns:The type of state change.
/** * Returns the type of framework event. * <p> * The type values are: * <ul> * <li>{@link #STARTED}</li> * <li>{@link #ERROR}</li> * <li>{@link #WARNING}</li> * <li>{@link #INFO}</li> * <li>{@link #PACKAGES_REFRESHED}</li> * <li>{@link #STARTLEVEL_CHANGED}</li> * <li>{@link #STOPPED}</li> * <li>{@link #STOPPED_BOOTCLASSPATH_MODIFIED}</li> * <li>{@link #STOPPED_UPDATE}</li> * <li>{@link #WAIT_TIMEDOUT}</li> * </ul> * * @return The type of state change. */
public int getType() { return type; } }