topic tWaitForFile : how to know that no file has been detected in Talend Studio

tWaitForFile : how to know that no file has been detected

jmd — Wed, 20 Mar 2013 16:26:49 GMT

I specified a timeout time (in seconds) in tWaitForFile component
but at the end, how to know if no file has been detected ?
I tried a ((Integer)globalMap.get("tWaitForFile_1_CURRENT_ITERATION")) == 0 in a "if" link
But it dosen't work
What can I do ?

Re: tWaitForFile : how to know that no file has been detected

Anonymous — Thu, 21 Mar 2013 07:53:50 GMT

Hi,
Component tWaitForFile provide several globalMaps.
You can get the file name and the number of iterations by using them.
For example, I have designed a job as:tWaitfile-->tjava(see my pic 12).
Get the globalMap in tjava

String filename=((String)globalMap.get("tWaitForFile_1_FILENAME"));
int Iteration=((Integer)globalMap.get("tWaitForFile_1_CURRENT_ITERATION"));
System.out.println(filename);
System.out.println(Iteration);

In tWaitFile, set the "a file is created" as trigger.
At last, when I create files in my directed folder, the result will give "filename" and number of "iteration" to us.

but at the end, how to know if no file has been detected ?
I tried a ((Integer)globalMap.get("tWaitForFile_1_CURRENT_ITERATION")) == 0 in a "if" link

If you want to get the number of detected files, you should define a counter by yourself and the code in tjava is

context.counter=context.counter 1;
System.out.println(context.counter);

(see my pic 3,4,5)
Please refer to my screenshots
Best regards
Sabrina

Re: tWaitForFile : how to know that no file has been detected

jmd — Thu, 21 Mar 2013 09:40:52 GMT

Thanks for your help
But I found the solution by myself :
To know if no file has been detected in a tWaitForFile component after its max duration (sort of timeout), we have to test the "((Integer)globalMap.get("tWaitForFile_1_CURRENT_ITERATION")) == <max iterations> " in a "if" link