org.apache.catalina
Interface Lifecycle

All Known Implementing Classes:
AccessLogValve, AuthenticatorBase, CertificatesValve, ContainerBase, Embedded, ExtendedAccessLogValve, FastEngineMapper, FileLogger, HttpConnector, HttpConnector, JDBCAccessLogValve, PersistentManagerBase, RealmBase, SingleSignOn, StandardCluster, StandardManager, StandardPipeline, StandardServer, StandardService, StoreBase, WebappClassLoader, WebappLoader

public interface Lifecycle

Common interface for component life cycle methods. Catalina components may, but are not required to, implement this interface (as well as the appropriate interface(s) for the functionality they support) in order to provide a consistent mechanism to start and stop the component.

Version:
$Revision: 466595 $ $Date: 2006-10-21 23:24:41 +0100 (Sat, 21 Oct 2006) $
Author:
Craig R. McClanahan

Field Summary
static java.lang.String AFTER_START_EVENT
          The LifecycleEvent type for the "component after start" event.
static java.lang.String AFTER_STOP_EVENT
          The LifecycleEvent type for the "component after stop" event.
static java.lang.String BEFORE_START_EVENT
          The LifecycleEvent type for the "component before start" event.
static java.lang.String BEFORE_STOP_EVENT
          The LifecycleEvent type for the "component before stop" event.
static java.lang.String START_EVENT
          The LifecycleEvent type for the "component start" event.
static java.lang.String STOP_EVENT
          The LifecycleEvent type for the "component stop" event.
 
Method Summary
 void addLifecycleListener(LifecycleListener listener)
          Add a LifecycleEvent listener to this component.
 LifecycleListener[] findLifecycleListeners()
          Get the lifecycle listeners associated with this lifecycle.
 void removeLifecycleListener(LifecycleListener listener)
          Remove a LifecycleEvent listener from this component.
 void start()
          Prepare for the beginning of active use of the public methods of this component.
 void stop()
          Gracefully terminate the active use of the public methods of this component.
 

Field Detail

START_EVENT

public static final java.lang.String START_EVENT
The LifecycleEvent type for the "component start" event.

See Also:
Constant Field Values

BEFORE_START_EVENT

public static final java.lang.String BEFORE_START_EVENT
The LifecycleEvent type for the "component before start" event.

See Also:
Constant Field Values

AFTER_START_EVENT

public static final java.lang.String AFTER_START_EVENT
The LifecycleEvent type for the "component after start" event.

See Also:
Constant Field Values

STOP_EVENT

public static final java.lang.String STOP_EVENT
The LifecycleEvent type for the "component stop" event.

See Also:
Constant Field Values

BEFORE_STOP_EVENT

public static final java.lang.String BEFORE_STOP_EVENT
The LifecycleEvent type for the "component before stop" event.

See Also:
Constant Field Values

AFTER_STOP_EVENT

public static final java.lang.String AFTER_STOP_EVENT
The LifecycleEvent type for the "component after stop" event.

See Also:
Constant Field Values
Method Detail

addLifecycleListener

public void addLifecycleListener(LifecycleListener listener)
Add a LifecycleEvent listener to this component.

Parameters:
listener - The listener to add

findLifecycleListeners

public LifecycleListener[] findLifecycleListeners()
Get the lifecycle listeners associated with this lifecycle. If this Lifecycle has no listeners registered, a zero-length array is returned.


removeLifecycleListener

public void removeLifecycleListener(LifecycleListener listener)
Remove a LifecycleEvent listener from this component.

Parameters:
listener - The listener to remove

start

public void start()
           throws LifecycleException
Prepare for the beginning of active use of the public methods of this component. This method should be called before any of the public methods of this component are utilized. It should also send a LifecycleEvent of type START_EVENT to any registered listeners.

Throws:
LifecycleException - if this component detects a fatal error that prevents this component from being used

stop

public void stop()
          throws LifecycleException
Gracefully terminate the active use of the public methods of this component. This method should be the last one called on a given instance of this component. It should also send a LifecycleEvent of type STOP_EVENT to any registered listeners.

Throws:
LifecycleException - if this component detects a fatal error that needs to be reported


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