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Nested workflow

amol82

Hi ,

I am calling a workflow from an existing workflow using
here is the code snippet for the same

owner="__INSERT__($taskOwner);"
description="nested"
immediate="t"
readonly="t">

Now i need to pass the task id here when the nested workflow is initiated..so that i can capture the attached files and other info in the child workflow
I am unable to pass any value with the file.Could you suggest me any way to use the variables from parent to the child and also how to send back any value from child to parent

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kaalraa

What type of task are you using to invoke the child workflow? An external task or a wftask?

Also please be more clear as what you need to pass and retrive along with the working environment.

The code snippet you have attached does not symbolize anything. If you wish top provide your code to be checked... please attach the same as a separate text file.

Hi ,

I am calling a workflow from an existing workflow using
here is the code snippet for the same

owner="__INSERT__($taskOwner);"
description="nested"
immediate="t"
readonly="t">

Now i need to pass the task id here when the nested workflow is initiated..so that i can capture the attached files and other info in the child workflow
I am unable to pass any value with the file.Could you suggest me any way to use the variables from parent to the child and also how to send back any value from child to parent

Adam Stoller

Hi ,

I am calling a workflow from an existing workflow using <wfttask>
here is the code snippet for the same
<wftask name="nested"
owner="__INSERT__($taskOwner);"
description="nested"
immediate="t"
readonly="t">
<areavpath v="__TAG__('iw_workarea');"/>

<wftfile v="__INSERT__("$template_file");" background="t" />

</wftask>

Now i need to pass the task id here when the nested workflow is initiated..so that i can capture the attached files and other info in the child workflow
I am unable to pass any value with the file.Could you suggest me any way to use the variables from parent to the child and also how to send back any value from child to parent

Read the perldoc for TeamSite::WFworkflow - and/or search the forums - you do not need to explicitly pass this information the child workflow can access it themself via the method described in the documentation.

Also - please learn how to Preview / format your posts so that coded segments show up correctly (as I did in the above quoted text)

kaalraa

Also - please learn how to Preview / format your posts so that coded segments show up correctly (as I did in the above quoted text)

Adam,

Could you please share along as how you would be able to get the content posted by Amol. What settings you have done to preview the posts?

Adam Stoller

Adam,

Could you please share along as how you would be able to get the content posted by Amol. What settings you have done to preview the posts?

When you Quote the original post to respond to it - you can see all the original text as written.
If you search the forums - you'll find I've provided detailed information about how to work around the formatting issues - other users have found alternative methods - but if you click Preview Post (or whatever the option is) before Submitting the post - you can verify that the content of the post is what you want it to be.

kaalraa

When you Quote the original post to respond to it - you can see all the original text as written.
If you search the forums - you'll find I've provided detailed information about how to work around the formatting issues - other users have found alternative methods - but if you click Preview Post (or whatever the option is) before Submitting the post - you can verify that the content of the post is what you want it to be.

Thanks Adam.. for the post but my curiousity is to know as how YOU got the complete content posted by Amol.

Was not asking as how to preview the self written post before submitting.

Adam Stoller

Thanks Adam.. for the post but my curiousity is to know as how YOU got the complete content posted by Amol.

Was not asking as how to preview the self written post before submitting.

Try re-reading my previous response - the information is in there.

amol82

I m using the below code in my child workflow,but it gives me an error

I am trying to use this code,but i am not sure from where will i get this variable $id,i need to pass this from the parent workflow?

my $job = new TeamSite::WFworkflow($id)
my $Ptask= $job -> GetParentTask()

Also please let me knw how can i post my requests in the correct format

kaalraa

I m using the below code in my child workflow,but it gives me an error

I am trying to use this code,but i am not sure from where will i get this variable $id,i need to pass this from the parent workflow?

my $job = new TeamSite::WFworkflow($id)
my $Ptask= $job -> GetParentTask()

Also please let me knw how can i post my requests in the correct format

Amol,

While creating the child workflow using wftask element... you have to pass the parent job id and the other desired values as the task variable or the global workflow variables.

I dont think.. there is any other way around to fetch those IDs.

amol82

exactly this is what i m trying to find..
How do I pass this id ,i am calling the nested workflow using the below code.Now where do i need to send th variable.
wftfile v="__INSERT__("$template_file");" background="t" />

Thanks

Adam Stoller

exactly this is what i m trying to find..
How do I pass this id ,i am calling the nested workflow using the below code.Now where do i need to send th variable.
wftfile v="__INSERT__("$template_file");" background="t" />

Thanks

I'm not sure about in the WFT (it's been a while since I've coded a nested workflow) - but if your child wft defines a job variable (e.g. parentTaskId, and starts with an externaltask - the externaltask script is automatically passed the current (child) jobid and taskid, from which you can use the methods previously mentioned and then set the job variable within the child workflow for quick reference by some other script called later in the workflow (or do the same kind of referencing then, when you need it).

shekhar_iw

Thanks for the reply.
Could you please help me understand how can we execute a workflow using an exteranl task.I tried it using iwwft_compile.ipl ,but it didnt work.Could you send me the code snippet for the same.

kaalraa

Thanks for the reply.
Could you please help me understand how can we execute a workflow using an exteranl task.I tried it using iwwft_compile.ipl ,but it didnt work.Could you send me the code snippet for the same.

my $system = new TeamSite::WFsystem();
my $wf = $system->CreateWorkflow($wfFile);
### $wfFile is the xml file which is to be compiled as a wf
if (!($wf->IsValid()))
{
my $wfError = $wf->GetError();
}
else
{
$wf->Invoke();
}

Also... you can use some CLTs (iwjobc and iwinvoke) within your external task to comple and invoke your workflow. But be sure the user must have a master role.

amol82

Ya i got your point,but i want to invoke a wft file and not an xml.
Also the owner of the task is not having a master role.Please suggest what can i do in such a case.
Also i m using the below code in the child workflow

my $wf=TeamSite::WFworkflow->new('2345');
my $taskid= $wf->GetId();
$task= $wf->GetParentTask($this);

But task is returning me undef here.
How can i get the parent task from the child task if i m using wftask

Adam Stoller

Ya i got your point,but i want to invoke a wft file and not an xml.
Also the owner of the task is not having a master role.Please suggest what can i do in such a case.
Also i m using the below code in the child workflow

my $wf=TeamSite::WFworkflow->new('2345');
my $taskid= $wf->GetId();
$task= $wf->GetParentTask($this);

But task is returning me undef here.
How can i get the parent task from the child task if i m using wftask

In your above example

- but I'm not sure if the thus-instantiated job will have the parent-task association built-in, but if you need that you can pass that information in as a parameter.

amol82

I think i shoul explain you my problem from the scratch now.

I have a workflow where i am using to call another workflow
wftask name="nested"..
.....
wftfile v="french_direct/testWorkflow_new.wft" background="t" />
...
/wftask>

In the child workflow
i did something like this:
my $taskId = $ARGV[1];
my $task = TeamSite::WFtask->new($taskId);
my $job_id = $task->GetWorkflowId();
my $current_job = new TeamSite::WFworkflow($job_id);
my $parent_job_obj = $current_job->GetParentTask($this);
my $parent_task = "";

if($parent_job_obj eq undef)
{
$parent_task = "ND";
}

But here again $parent_task is returning me ND,=> it is not returning me the parent task
Now if i try to get the values for ARGV..it returns me an array 0f 6 elements
where
ARGV[0] returns me the absolute path of the child workflow
ARGV[1] owner of the parent task
ARGV[2] blank
ARGV[3] vpath
ARGV[4] HASH(some value..)
ARGV[5] ARRAY(some value..)

Could you help me understand what does this mean and suggest a solution