wait activity getting its value from expression?

[meghanai_99]

Hello,

This could be a basic question but I don't seem to find any sample for this. According to BPEL spec, wait activity can take duration or datetime as attribute values but in strings. This is straight forward. User specifies a constant value.

However the spec also says that wait can get input from variable. But it does not specify the syntax for querying such value. I assume in that case something like

<wait for="bpws:getVariableData('variable', 'part', 'query')" />

would work. Am I right here? Can someone please confirm if this is how it is supposed to work?

Thank you,
Meghana

[meghanai_99]

Today I tried both 'for' and 'until' attributs with static strings. 'for' worked fine but not 'until'. Here is the string I use -

 <wait until="'2008-4-25T18:0:0Z'" />

What am I doing wrong? I get InvalidExpressionFailure.

[kukeltje]

I'm totally no bpel expert, heck, I'm not even a bpel dummy, but single AND double quotes?

[meghanai_99]

Yes. That's how BPEL does it.

I got the above expression right now. It needs 2 digits for all single digit values i.e. 0 to 9 so

<wait until="'2008-04-25T18:00:00Z'" />

works.

I still don't know how to access an expression with queries though. It will be great if someone can advise.

Thank you,
Meghana.

[kukeltje]

ahhh shoot, THAT I should have known