检查文件是否存在Informatica工作流程

Question

I am trying to figure out a way to check if the file exists before running a session.

I currently have a command line task before a sessions that does the following:

IF EXIST TEST*.TXT EXIT 0 ELSE EXIT 1

I want to use the ErrorCode value on the link task, but I have no luck getting it to work. Is there a way to do this?

Answer 1

I use Command task with this command:

test -f $PMTargetFileDir/fdata.txt; echo $((1/$?))

Answer 2

1) If the file exists $? equals to 0.

2) If the file does not exist $? equals to 1.

So, in 1) $((1/$?)) will cause th error (division by zero). After the Command task you can add two or one of these links: first with the condition $TaskName.PrevTaskStatus=SUCCEEDED , and second with $TaskName.PrevTaskStatus=FAILED .

Answer 3

Create a command task just before your main session

Link this command task to main session and put link condition as $prevtaskstatus=succeeded

and write below code in Command task

head -2 /testfiledir/test.txt

Command task will fail if file does not exist and succeeds if file exist.