Complete code to customize Ora/Jbo/Dac errors in applets.

Question

Note : In this code you will see I just took one row from the stringBuffer which is hold all the error message details, But you can modify it in your concern.
Good luck...Ali
1- add following classes to your project package
1-1-This class parses the errors. With this the error message is in your hand as a String/StringBuffer and of course you can substring that.
import oracle.dacf.util.errormanager.*;
import oracle.dacf.dataset.*;
import oracle.jbo.*;
public class myErrorParser{
** Walk through JBO error stack and create a concatenated
error message.
** @return JBO error message
public static String getJboErrorMessageStack(ErrorMessage em){
StringBuffer returnvalue = new StringBuffer();
String errMsg="";
ErrorMessageContext context=em.getErrorMessageContext();
if(context!=null && context instanceof DacfErrorMessageContext){
if(((DacfErrorMessageContext)context).getException() instanceof DacfRuntimeException){
Exception origException=((DacfRuntimeException) ((DacfErrorMessageContext)context).getException()).getOriginalException();
if(origException!=null){
//returnvalue.append(origException.getMessage());
errMsg=(origException.getMessage()).toString();
Object [] details = null;
if(origException instanceof JboException){
details=((JboException)origException).getDetails();
if(details!=null && details.length>0){
for(int i=0;i<details.length;i++){
if(details[i] instanceof JboException){
//returnvalue.append("\n");
//returnvalue.append(((JboException)details).getMessage());
errMsg=(((JboException)details[i]).getMessage()).toString();
}else if (details[i] instanceof Exception){
//returnvalue.append("\n");
//returnvalue.append(((Exception)details[i]).getMessage());
errMsg=(((Exception)details[i]).getMessage()).toString();
if (errMsg.indexOf("ORA_2")!=1) // take trigger errors errMsg=errMsg.substring(errMsg.indexOf("ORA_2")+1,errMsg.indexOf("\n"));
else if (errMsg.indexOf("DAC_")!=1)// take DAC error errMsg=errMsg.substring(errMsg.indexOf("DAC_")+1,errMsg.indexOf("\n"));
else if (errMsg.indexOf("ORA_")!=1)//take other ORA erros errMsg=errMsg.substring(errMsg.indexOf("ORA_")+1,errMsg.indexOf("\n"));
return errMsg;
1-2- This class defines your own error listener. If you like you can customize the errors (change the text) one by one as shown in this class.(the code which is commented out)
import javax.swing.*;
import java.awt.*;
import oracle.dacf.util.errormanager.*;
public class myErrorListener implements ErrorManagerListener{
public void addingErrorMessage(ErrorMessage message)
throws oracle.dacf.util.errormanager.ErrorMessageVetoException {
String errorMessage=myErrorParser.getJboErrorMessageStack(message);
/* if(errorMessage.indexOf("ORA-00001")!=-1)
JOptionPane.showMessageDialog(null,"Class name should be unique", "Error",JOptionPane.ERROR_MESSAGE);
else if(errorMessage.indexOf("DAC-603")!=-1){
//catch the client error, ignore the similar server one
if(message.getMessageText().getId().toString().equals("DAC-307"))
JOptionPane.showMessageDialog(null,"Class name should not be empty", "Error",JOptionPane.ERROR_MESSAGE);
else
return;
if (errorMessage.length()!=0){
Toolkit myBeep = Toolkit.getDefaultToolkit();
myBeep.beep();
JOptionPane.showMessageDialog(null,errorMessage, "Error",JOptionPane.ERROR_MESSAGE);
throw new ErrorMessageVetoException("Error processed. "+getName());
public String getName(){
return "Class editor's error handler";
public void removingErrorMessage(ErrorMessage parm1)
throws oracle.dacf.util.errormanager.ErrorMessageVetoException{
public void rollingBackAddingErrorMessage(ErrorMessage parm1){
public void rollingBackRemovingErrorMessage(ErrorMessage parm1){
2- add following statements at top of the jbInit() method in the main applet/frame.
this code removes the default error listener and add your customized one. You can comment this out whenever you want to back to default listener.
if (ErrorManager.findLoggerByName(DacfErrorPopupLogger.NAME)!=null){
ErrorManager.removeErrorLogger(ErrorManager.findLoggerByName(DacfErrorPopupLogger.NAME));
ErrorManager.addErrorManagerListener(new myErrorListener());
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Answer 1

JDev in default shows a long trace stack with several lines for the errors. The above statement takes (substring) only that line of stack error, which is started by "ORA-2".
Meaning of "ORA-2": As you know in PL/SQL all user defined errors (rasie_application_error) must be in range -20000 to -29999 (hope i am right, for sure started with -2) for example if you coded in trigger like this:
raise_applecation_error(-20001,"Not Found");
this error shows in JDev default error message like this:
ORA-20001: Not Found
So to take this from the JDev error string buffer, i said :
if (errMsg.indexOf("ORA_2")!=1) /* take trigger errors */
errMsg=errMsg.substring(errMsg.indexOf("ORA_2")+1,errMsg.indexOf("\n"));
The other nested If(s) check for other type of errors .
notes:
- "!=1" means if exist.
- Yes you should use "ORA-2" instead of "ORA_2"
Hope be clear.Ali
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