javax.faces.context.ExceptionHandlerWrapper Maven / Gradle / Ivy
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package javax.faces.context;
import javax.faces.FacesException;
import javax.faces.FacesWrapper;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ExceptionQueuedEvent;
import javax.faces.event.SystemEvent;
/**
* Provides
* a simple implementation of {@link ExceptionHandler} that can
* be subclassed by developers wishing to provide specialized behavior
* to an existing {@link ExceptionHandler} instance. The default
* implementation of all methods is to call through to the wrapped
* {@link ExceptionHandler} instance.
*
* Usage: extend this class and push the implementation being wrapped to the
* constructor and use {@link #getWrapped} to access the instance being wrapped.
*
* @since 2.0
*/
public abstract class ExceptionHandlerWrapper extends ExceptionHandler implements FacesWrapper {
private ExceptionHandler wrapped;
/**
* @deprecated Use the other constructor taking the implementation being wrapped.
*/
@Deprecated
public ExceptionHandlerWrapper() {
}
/**
* If this exception handler has been decorated,
* the implementation doing the decorating should push the implementation being wrapped to this constructor.
* The {@link #getWrapped()} will then return the implementation being wrapped.
*
* @param wrapped The implementation being wrapped.
* @since 2.3
*/
public ExceptionHandlerWrapper(ExceptionHandler wrapped) {
this.wrapped = wrapped;
}
@Override
public ExceptionHandler getWrapped() {
return wrapped;
}
// ------------------------------------------- Methods from ExceptionHandler
/**
* The default behavior of this method is to
* call {@link ExceptionHandler#getHandledExceptionQueuedEvent()}
* on the wrapped {@link ExceptionHandler} object.
*
* @see ExceptionHandler#getHandledExceptionQueuedEvent()
*/
@Override
public ExceptionQueuedEvent getHandledExceptionQueuedEvent() {
return getWrapped().getHandledExceptionQueuedEvent();
}
/**
* The default behavior of this method is to
* call {@link javax.faces.context.ExceptionHandler#handle()}
* on the wrapped {@link ExceptionHandler} object.
*
* @see javax.faces.context.ExceptionHandler#handle()
*/
@Override
public void handle() throws FacesException {
getWrapped().handle();
}
/**
* The default behavior of this method is to
* call {@link javax.faces.context.ExceptionHandler#isListenerForSource(Object)}
* on the wrapped {@link ExceptionHandler} object.
*
* @see javax.faces.context.ExceptionHandler#isListenerForSource(Object) ()
*/
@Override
public boolean isListenerForSource(Object source) {
return getWrapped().isListenerForSource(source);
}
/**
* The default behavior of this method is to
* call {@link javax.faces.context.ExceptionHandler#processEvent(javax.faces.event.SystemEvent)}
* on the wrapped {@link ExceptionHandler} object.
*
* @see javax.faces.context.ExceptionHandler#processEvent(javax.faces.event.SystemEvent)
*/
@Override
public void processEvent(SystemEvent event) throws AbortProcessingException {
getWrapped().processEvent(event);
}
/**
* The default behavior of this method is to
* call {@link javax.faces.context.ExceptionHandler#getRootCause(Throwable)}
* on the wrapped {@link ExceptionHandler} object.
*
* @see javax.faces.context.ExceptionHandler#getRootCause(Throwable)
*/
@Override
public Throwable getRootCause(Throwable t) {
return getWrapped().getRootCause(t);
}
/**
* The default behavior of this method is to call
* {@link ExceptionHandler#getHandledExceptionQueuedEvents()} on the wrapped
* {@link ExceptionHandler} object.
*
* @see ExceptionHandler#getHandledExceptionQueuedEvents()
*/
@Override
public Iterable getHandledExceptionQueuedEvents() {
return getWrapped().getHandledExceptionQueuedEvents();
}
/**
* The default behavior of this method is to
* call {@link ExceptionHandler#getUnhandledExceptionQueuedEvents()}
* on the wrapped {@link ExceptionHandler} object.
*
* @see ExceptionHandler#getUnhandledExceptionQueuedEvents()
*/
@Override
public Iterable getUnhandledExceptionQueuedEvents() {
return getWrapped().getUnhandledExceptionQueuedEvents();
}
}