Empty file to process in customer J2EE adapter module

Question

Hi All,
if i give an empty text file to a sender communication channel, then no message is generated by XI.
i want to generate a dummy XML if empty file is given.
so is it possible to make a customer-specific J2EE adapter module - then deploy it - then if in sender comm channel this adapter module is written before SAPAdapter module, then should XI generate a dummy XML for this empty file.
i am asking this because i developed a J2EE adapter module, then deployed it, then tried to invoke it  from sender comm channel but this J2EE adapter module is not getting invoked - this i can tell because i have written the following lines only in Java class process method:
<i>Message msg_audit = (Message)inputModuleData.getPrincipalData();
AuditMessageKey amk = new AuditMessageKey(msg_audit.getMessageId(),AuditDirection.OUTBOUND);
Audit.addAuditLogEntry(amk, AuditLogStatus.SUCCESS,"FileCheck: Module called");
                                             return inputModuleData;</i>
but still in the audit log only 3 messages of entire file content converted to XML format, empty doc so no sending of message and deleting of empty file are coming.
<b>Can anybody suggest whether is it possible to process an empty text file to generate a dummy XML in sender communication channel in XI.</b>
Thanks,
Rajeev Gupta

Answer 1

Hi All,
When i write this code:
try
                                                            obj = inputModuleData.getPrincipalData();                                                  
                                                            msg_audit = (Message)obj;
                                                            amk = new AuditMessageKey(msg_audit.getMessageId(),AuditDirection.OUTBOUND);
                                                            Audit.addAuditLogEntry(amk,AuditLogStatus.SUCCESS,"FileCheck: Module called");
                                   <i>File f = new File("/components/XITEMP/sample/PWC/check.txt");                                                            
                                                                      if (f.canWrite())
                                                                                     PrintStream ps;
                                                                                     FileOutputStream fos =new FileOutputStream(f);
                                                                                     File f1 = new File("/components/XITEMP/sample/PWC/check1.txt");
                                                                                     ps = new PrintStream(fos);
                                                                                     if (f1.exists()==false)
                                                                                          f1.createNewFile();                                                                    
                                                                                     ps.println("Testing");
                                                                                     ps.close();
                                                                                     fos.close();                                                            
                                                                           else
                                                                                File f2 = new File("/components/XITEMP/sample/PWC/check2.txt");          
                                                                                if (f2.exists()==false)
                                                                                          f2.createNewFile();                                                                    
                                                                           }               </i>                                        
it works fine......it creates the file check1.txt
but when i place the italiced code in this format:
     try
                                                            obj = inputModuleData.getPrincipalData();                                                  
                                                            msg_audit = (Message)obj;
                                                            amk = new AuditMessageKey(msg_audit.getMessageId(),AuditDirection.OUTBOUND);
                                                            Audit.addAuditLogEntry(amk,AuditLogStatus.SUCCESS,"FileCheck: Module called");
                                                       catch (Exception e)
                                                                 try
                                                                      File f = new File("/components/XITEMP/sample/PWC/check.txt");                                                            
                                                                      if (f.canWrite())
                                                                                     PrintStream ps;
                                                                                     FileOutputStream fos =new FileOutputStream(f);
                                                                                     File f1 = new File("/components/XITEMP/sample/PWC/check1.txt");
                                                                                     ps = new PrintStream(fos);
                                                                                     if (f1.exists()==false)
                                                                                          f1.createNewFile();                                                                    
                                                                                     ps.println("Testing");
                                                                                     ps.close();
                                                                                     fos.close();                                                            
                                                                           else
                                                                                File f2 = new File("/components/XITEMP/sample/PWC/check2.txt");          
                                                                                if (f2.exists()==false)
                                                                                          f2.createNewFile();                                                                    
                                                                 catch(Exception ex)
it doesnot create the file check1.txt......
Can anybody suggest why in the exception block this italiced code is not working........means it is working in try block of try{}catch{} block.......but it is not working in catch block of try{}catch{try{}catch{}}
Thanks,
Rajeev Gupta