Oracle Forms
– Javabean
A Javabean timer
1.
Purpose
This is a Javabean component that allows to replace the internal Oracle Forms’ timer
2.
The Javabean
package oracle.forms.demo;
import oracle.forms.handler.IHandler;
import oracle.forms.ui.CustomEvent;
import oracle.forms.properties.ID;
import oracle.forms.ui.VBean;
import oracle.forms.engine.Main;
import oracle.forms.engine.*;
import oracle.forms.handler.*;
public class Timer extends VBean implements Runnable
{
static
Thread runner ;
static int
seconds = 0 ;
static
IHandler mHandler;
protected
static final ID TIMEREXPIRED =
ID.registerProperty("TimerExpired");
protected
static final ID pInitTimer =
ID.registerProperty("initTimer");
protected
static final ID pStartTimer =
ID.registerProperty("Start");
protected
static final ID pStopTimer =
ID.registerProperty("Stop");
public
Timer()
{
super();
}
public void
init(IHandler handler)
{
super.init(handler);
mHandler
= handler;
System.out.println("*** oracle.forms.demo.Timer Init ***") ;
}
private
void startTimer()
{
if (runner
== null )
{
runner
= new Thread(this);
runner.start();
}
}
private
static void stopTimer()
{
if
(runner != null )
{
runner
= null;
}
}
public void
run()
{
Thread theThread = Thread.currentThread();
while
(runner == theThread)
{
try{
Thread.sleep(seconds);
} catch
(InterruptedException e) { }
dispatch_event() ;
}
}
public boolean
setProperty(ID _ID, Object _args)
{
if(_ID==pInitTimer)
{
System.out.println("milliseconds=" + (String)_args) ;
seconds
= new Integer((String)_args).intValue() ;
return
true;
}
else if (_ID
== pStartTimer)
{
System.out.println("Start") ;
startTimer() ;
return
true;
}
else if
(_ID == pStopTimer)
{
stopTimer() ;
return
true;
}
else
{
return true;
}
}
public void
dispatch_event()
{
CustomEvent ce = new CustomEvent(mHandler, TIMEREXPIRED);
dispatchCustomEvent(ce);
}
}
3.
Forms configuration
Ø Copy the bean_timer.jar
file in the /forms/java directory
Ø Edit the /forms/server/formsweb.cfg
file to add the jar file to the archive_jini variable
archive_jini=f90all_jinit.jar,……,bean_timer.jar
4.
How to implement this bean in your own form
Ø Open your form
Ø Add a Javabean component
to any block
Ø Set its Implementation
class property to : oracle.forms.demo.Timer
5.
The properties that can be sent to the bean
Ø The frequency of expiration
set_custom_property( 'BLOC3.BEAN_ITEM', 1, 'initTimer', 'number_of_milliseconds');
Ø Start the timer
set_custom_property( 'BLOCK.BEAN', 1, 'Start', '');
Ø Stop the timer
set_custom_property( 'BLOCK.BEAN', 1, 'Stop', '');
6.
The sample dialog
Ø Download
the beantimer.zip file
Ø Unzip the beantimer.zip
file
Ø Copy the
bean_timer.jar file in your /forms/java/ directory
Ø Edit your /forms/server/formsweb.cfg
file
Ø Open the bean_timer.fmb
module (Oracle Forms 9.0.2)
Ø Compile all and
run the module
This dialog allows to enter
the frequency of the timer, start (showing the time in real-time) and stop the
timer.
The code that captures the
java event is located in the WHEN-CUSTOM-ITEM-EVENT trigger of the bean
item.
:BLOCK2.HEURE := SYSDATE ;
Synchronize ;