oracle.cabo.servlet.event
Class InvokeEventHandler

java.lang.Object
  |
  +--oracle.cabo.servlet.event.AbstractDataEventHandler
        |
        +--oracle.cabo.servlet.event.InvokeEventHandler

All Implemented Interfaces:

EventHandler

public final class InvokeEventHandler

extends AbstractDataEventHandler

Invokes a method

Inner Class Summary

static class

InvokeEventHandler.MethodParameter This class combines a parameter type with its value.

Constructor Summary

InvokeEventHandler()

Method Summary

EventResult	doHandleEvent(BajaContext bContext, Page page, PageEvent event) Handle an event.
protected void	init() Called after this bean is constructed (and all its properties set) so that it may complete its initialization
void	setExceptionBinding(BoundValue value)
void	setInstanceBinding(BoundValue value)
void	setJavaType(java.lang.String value)
void	setMethod(java.lang.String value)
void	setParameters(InvokeEventHandler.MethodParameter[] params)
void	setResultBinding(BoundValue value)

Methods inherited from class oracle.cabo.servlet.event.AbstractDataEventHandler

getAttributeInternal, getAttributeValue, getAttributeValue, getPageEvent, getRenderingContext, handleEvent, postHandleEvent, preHandleEvent, setAttributeBinding, setAttributeInternal, setAttributeValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InvokeEventHandler

public InvokeEventHandler()

Method Detail

doHandleEvent

public EventResult doHandleEvent(BajaContext bContext,
                                 Page page,
                                 PageEvent event)
                          throws java.lang.Throwable

Description copied from class: AbstractDataEventHandler

Handle an event. Clients return an EventResult object that encapsulates the resulsts. If handleEvent() returns null, the PageBroker will simply redisplay the same page. Otherwise, the result will be passed to the PageFlowEngine to determine the Page to render.

Clients should implement this method, instead of handleEvent, to perform the actual event handling logic.

Note: while the Page object is mutable, any calls that set properties, etc., will be ignored unless the Page is itself returned inside the EventResult.

Overrides:

doHandleEvent in class AbstractDataEventHandler

Following copied from class: oracle.cabo.servlet.event.AbstractDataEventHandler

Parameters:

context - the BajaContext

page - the page the client is requesting

event - the event on that page, or null if the client is just requesting a page display

Returns:

an object encapsulating results of this event

Throws:

java.lang.Throwable - if any processing of the event fails

setParameters

public void setParameters(InvokeEventHandler.MethodParameter[] params)

setResultBinding

public void setResultBinding(BoundValue value)

setExceptionBinding

public void setExceptionBinding(BoundValue value)

setMethod

public void setMethod(java.lang.String value)

setJavaType

public void setJavaType(java.lang.String value)
                 throws java.lang.ClassNotFoundException

setInstanceBinding

public void setInstanceBinding(BoundValue value)

init

protected void init()

Called after this bean is constructed (and all its properties set) so that it may complete its initialization