ItemTransformer and PullAction questions

["Farrell, Stephen R." <St...@leidos.com>]

Hello,

I have a use case where I am getting attributes from my trusted source but need to create a new attribute based on a lookup table. This lookup table takes the values of 2 existing attributes to find the value of the newly created attribute. I have accomplished the use case partially with a Pull Action implementation but it only works for user creation, not updating. When one of the source attributes change the value of the new attribute should also change but I cannot trigger such a change with my current Pull Action implementation and am asking for some advice. I tried to create the same logic as an ItemTransformer but I cannot seem to access the values of other attributes in the beforePropogation method.

Thanks,
Stephen

Re: ItemTransformer and PullAction questions

[Andrea Patricelli <an...@tirasa.net>]

Hi Stephen,

the ItemTransformer works only on the value of the attribute which it is 
mapped to, so, on my opinion, it isn't the right choice for you use case.

You should work in your PullActions implementation, especially 
implementing beforeUpdate [1] method in order to update the value of the 
generated attribute.

Alternatively you could consider defining the generated attribute as 
derived [2] and so let Syncope create its value for you based on JEXL 
expressions that takes the values of the two plain attributes (source).

[1] 
https://github.com/apache/syncope/blob/2_1_X/fit/core-reference/src/main/java/org/apache/syncope/fit/core/reference/TestPullActions.java#L71-L94

[2] https://syncope.apache.org/docs/2.1/reference-guide.html#derived

Il 26/11/19 00:05, Farrell, Stephen R. ha scritto:
>
> Hello,
>
> I have a use case where I am getting attributes from my trusted source 
> but need to create a new attribute based on a lookup table. This 
> lookup table takes the values of 2 existing attributes to find the 
> value of the newly created attribute. I have accomplished the use case 
> partially with a Pull Action implementation but it only works for user 
> creation, not updating. When one of the source attributes change the 
> value of the new attribute should also change but I cannot trigger 
> such a change with my current Pull Action implementation and am asking 
> for some advice. I tried to create the same logic as an 
> ItemTransformer but I cannot seem to access the values of other 
> attributes in the beforePropogation method.
>
> Thanks,
>
> Stephen
>
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