Recursive Variable Substitution

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1

Is there a way to perform recursive variable substitution
For eg,

%doc[%$iteration%]%

I could not make this work. I believe webMethods should have such trivial things. I added the parenthesis and tried…but could not make it work…Its urgent. Please let me know if there is any other roundabout way

2

Looks like you have to map the variable and do the appropriate indexing (blue line). webMethods allows pipeline variable substitution (%index%) when you are indexing.

3

Along this line, is there a way to perform multiple variable substitutions on a variable? For example,

%Document/%DocumentType%/IDOC/EDI_DC40/SNDPRN%

In this example, I need to substitute “DocumentType” and then perform the variable substitution on the string with the “DocumentType” substitution as such:

Document/INVOIC01/IDOC/EDI_DC40/SNDPRN

Any ideas?

Thanks,
Dave

4

Dave,

%Document/%DocumentType%/IDOC/EDI_DC40/SNDPRN% is actually below after processing: DocumentType since variables (Document/ and /IDOC/EDI_DC40/SNDPR) are null. variables can not be nested…as far as I am aware…but you can do loop for multiple documents within the parent document or given the document type value, you can branch transformations accordingly based on the document type. My 2 cents…
Hope it helps…

J-

5

> Is there a way to perform recursive variable substitution
> For eg,
>
> %doc[%$iteration%]%

The problem with this is webMethods variable names are pretty loose (pretty much anything except tabs or newlines)

For eg: you can have a variable named ‘]’ with value ‘3’.

About simple nested tags, it is possible to write a general purpose routine to detect the innermost pair of tags, then pickup the correponding value from the pipeline, then substitute it using pub.string:replace.

For eg:
%test[%$iteration%]%

Something more general purpose gets hairier and would need to be tested throughly.
For eg:
%outer%middle%inner%%%
%outer%middle_1%%middle_2%%

6

Hi,

To perform a multiple variable substitutions on a variable you can use wm.fin.utils:getFldValueFromDocData.

eg : I create a document like this :
myDocument
|_ %variable%_Example

I want the value %myDocument/%variable%_Example%
So I use getFldValueFromDocData whith I map “myDocument” to the document input of the service and I put %variable%_Example to the fldName input of the service with the option “perform variable substitution”.
The result of this service give to me my entrie myDocument/%variable%_Example !! :slight_smile:

Hope to be useful for someone…

7

hi,

where i can find getFldValueFromDocData ?

8

wm.fin.utils:getFldValueFromDocData but it was in v6.5 of webMethods. I don’t know if this package is always present in superior version.

9

There is a service in PSutilities named “PSUtilities.string:substituteVariables” which does the recusrsive substituion… you can download this sample package and copy the service into your local machine…