File name check during a BPM.

[Former Member]

Hi All,

Can we configure the file sender/receiver adapter to just check whether a file with a particulat file name exists in a directory?

I want to do this check at a particular stage in BPM. If the file name is detected, I would like to proceed in a BPM.

Kindly assist.

Thanks,

John

[rajasekhar_reddy14]

refer below link

http://wiki.sdn.sap.com/wiki/display/XI/FileLookupin+UDF

Regards,

Raj

[Former Member]

Hi,

No standard functionality exists in PI for only checking whether a file exists in a directory. you would need to use a UDF and the File I/O operations of java for this.

Regards

[Former Member]

Hi,

How can the UDF code work in this case without a channel configuration?

Can you provide a sample UDF?

(java O/I function?)

Thanks,

John

[Former Member]

Hi John,

You can use this code in the udf if the file directory is in the local file system

public String fileExists(Container container) throws StreamTransformationException{

   String FilePath = "C:\\FileName.txt";
   String reslt = "false";


   File f = new File(FilePath);  // You can even get this FilePath through function parameter as var1

   if(f.exists)
   {
      reslt = "true";
   }
   else
   {
      reslt = "false";
   }
 
   return reslt;

}

The function will return a string "true" if the file exists and "false" if not.

Regards,

Aravind

[Former Member]

Hi ajay,

Thanks for the code.

Here you have given the local drive path.

The code would be very different for an ftp path.

Thanks,

John

[Former Member]

Hi John,

Check this:

http://stackoverflow.com/questions/4302159/how-to-check-if-file-exist-when-downloading-from-ftp

Regards,

Aravind

[rajasekhar_reddy14]

you can write one UDF to perfrom File look up, check in your directory whethe specific file exists or not.

search in sdn for piece of UDF code.

Regards,

Raj