| Serial Communication and Forms [message #538077] |
Tue, 03 January 2012 15:56  |
Areint
Messages: 9
Registered: February 2010
Location: Iowa
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Junior Member |
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Hey,
Is it possible to communicate with a serial device (via COM1) with oracle forms / webutil? I am able to communicate in java using RXTXcomm, but I am having problems making a bean that uses it (getting security errors and yes, I have signed the jars).
Basically, I have a scale hooked up to my COM1 port and want to be able to send commands (zero and tare) to it and read the weight from it through a form or java bean.
Any help would be greatly appreciated!
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| Re: Serial Communication and Forms [message #541350 is a reply to message #538088] |
Mon, 30 January 2012 14:54  |
Areint
Messages: 9
Registered: February 2010
Location: Iowa
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Junior Member |
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Hey,
Thanks for the reply and sorry for the long delay here. Right now we are using Oracle Forms 11g, is this feature still available in it? I've looked into it but haven't really found anything yet.
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| Re: Serial Communication and Forms [message #541441 is a reply to message #541350] |
Tue, 31 January 2012 06:19 |
owais_baba
Messages: 289
Registered: March 2008
Location: MUSCAT
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Senior Member |
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this is a sample code come with the API.
package msr;
/**
*
* @author Dell
*/
import java.io.*;
import java.util.*;
import javax.comm.*;
/**
* Class declaration
*
*
* @author
* @version 1.8, 08/03/00
*/
public class SimpleRead implements Runnable, SerialPortEventListener {
static CommPortIdentifier portId;
static Enumeration portList;
InputStream inputStream;
SerialPort serialPort;
Thread readThread;
/**
* Method declaration
*
*
* @param args
*
* @see
*/
public static void main(String[] args) {
boolean portFound = false;
String defaultPort = "COM3";
if (args.length > 0) {
defaultPort = args[0];
}
portList = CommPortIdentifier.getPortIdentifiers();
while (portList.hasMoreElements()) {
portId = (CommPortIdentifier) portList.nextElement();
if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
if (portId.getName().equals(defaultPort)) {
System.out.println("Found port: "+defaultPort);
portFound = true;
SimpleRead reader = new SimpleRead();
}
}
}
if (!portFound) {
System.out.println("port " + defaultPort + " not found.");
}
}
/**
* Constructor declaration
*
*
* @see
*/
public SimpleRead() {
try {
serialPort = (SerialPort) portId.open("SimpleReadApp", 2000);
} catch (PortInUseException e) {}
try {
inputStream = serialPort.getInputStream();
} catch (IOException e) {}
try {
serialPort.addEventListener(this);
} catch (TooManyListenersException e) {}
serialPort.notifyOnDataAvailable(true);
try {
serialPort.setSerialPortParams(9600, SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
} catch (UnsupportedCommOperationException e) {}
readThread = new Thread(this);
readThread.start();
}
/**
* Method declaration
*
*
* @see
*/
public void run() {
try {
Thread.sleep(20000);
} catch (InterruptedException e) {}
}
/**
* Method declaration
*
*
* @param event
*
* @see
*/
public void serialEvent(SerialPortEvent event) {
switch (event.getEventType()) {
case SerialPortEvent.BI:
case SerialPortEvent.OE:
case SerialPortEvent.FE:
case SerialPortEvent.PE:
case SerialPortEvent.CD:
case SerialPortEvent.CTS:
case SerialPortEvent.DSR:
case SerialPortEvent.RI:
case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
break;
case SerialPortEvent.DATA_AVAILABLE:
byte[] readBuffer = new byte[20];
try {
while (inputStream.available() > 0) {
int numBytes = inputStream.read(readBuffer);
}
System.out.print(new String(readBuffer));
} catch (IOException e) {}
break;
}
}
}
hope it will help u
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| Re: Serial Communication and Forms [message #544554 is a reply to message #543292] |
Wed, 22 February 2012 07:21 |
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mughals_king
Messages: 392
Registered: January 2012
Location: pakistan
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Senior Member |
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sorry dear i couldn't see your post anyway here is simple solution to call java class
Oracle Forms 6i
JDK 1.6
With this I managed to create the hello world example:
Configure PATH environment variables:
C:\PATH_TO_JAVA\Java\jdk1.6.0\bin;
C:\PATH_TO_JAVA\Java\jdk1.6.0\jre\bin;
C:\PATH_TO_JAVA\Java\jdk1.6.0\jre\bin\client;
Ex: PATH_TO_JAVA = C:\Program Files
Add to CLASSPATH
FORMS_HOME\TOOLS\common60\JAVA\IMPORTER.JAR (In my case FORMS_HOME was C:\orant)
PATH_TO_YOUR_JAR\NAME_OF_JAR.jar
Create Java Program
1.Create with your IDE a simple java program, following is mine:
public class HolaMundo {
private String hi= "Hey World!!!";
public String GetHi(){
return this.hola;
}
public String getMultiply(int a, int b){
return ""+a*b;
}
public static void main(String args[]){
HiWorldhm = new HiWorld();
System.out.println(hm.GetHi());
System.out.println(hm.getMultiply(5,10));
}
}
2.Export it to Jar file (Path has to be the one you put in CLASSPATH environment variable.
Import the classes to Forms
Create a new project in Oracle Forms and also create a Canvas, in the canvas use a Text and a Button. The name of the button:
TEXT_HI_WORLD.
Following click on the Menu: Program > Import Java Classes
If everything went Ok then there will be a new window that will show you the package where the Class is, you extend it until there is the HiWorld class. Import it.
In Program Unit now there will be two files:
HIWORLD (Specification)
HIWORLD (Body)
This are files generated automatically and needed to use the class.
Then go back to the canvas, right click on the Button and select the Thrigger WHEN-BUTTON-PRESSED, the programming of this will be:
DECLARE
v_wb ORA_JAVA.JOBJECT;
v_hi VARCHAR2(20);
BEGIN v_wb := hiworld.new();
v_hi:= hiworld.getHi(v_wb);
:TEXT_HI_WORLD := v_hi
END;
Now execute the program and click on the button! 
Hope this helps Java programmers with no much of knowledge on Forms to integrate with legacy systems! 
[Updated on: Wed, 22 February 2012 07:25] Report message to a moderator |
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