BizTalk Business Rule for checking against list of values contained in .csv, xml, etc -


i'm new bre , new biztalk whole, may quite simple , evading me...

what i'd this: create business rule in bre takes input incoming message , checks see if value contained in message matches of values within specified set of values. sample message follows. <isfound> field updated accordingly.

<n1:documenttemplate xmlns:n1="mynamespace">     <rootoid>2.16.840.1.113883.3.51.60.2.5</rootoid>     <isfound>false</isfound> </n1:documenttemplate>

basically i'd match <rootoid> node against list of values. i've created business match <rootoid> against hardcoded value in conditions of business rule...just proof of concept learn basics of how use bre , call rule in orchestration.

i'm failing find way match against list of values beyond doing giant list of hard-coded ors in "conditions" of business rule. list of accepted values large enough doing bunch of ors not going work.

ideally, i'd have maintainable xml file full of acceptable <rootoid> values check against within business rule.

i realize there way call database , read values table/column matching, i'd rather keep sql out of equation can little more self-contained.

one "equal" expression enough. rhs fact should vocabulary item. in case of xml type proper path pull values 1 one , cause multiple evaluations , respectively firing action if there's match. key remember: bre pattern matching engine.

the vocabulary convenient alias fact definition. let's create xml file following structure:

<options>   <value>a</value>   <value>b</value>   <value>c</value> </options>

define vocabulary fact name: possiblevalues xpath selector: /options/value xpath field: .

then defining rule if currentvalue == possiblevalues cause 3 condition evaluations rhs yields 3 facts working memory. consequently, true fire rule (action). compare default definition bre creates when pick node xml schema assert 1 (first) fact:

xpath selector: /options/ xpath field: value

(namespaces omitted brevity)

at runtime pass xml document argument bre (whether in orchestration or in .net component depending on bre invocation context). @ design time testing have implement fact creator component (implements ifactcreator) provide instance of required arguments.

long-term facts (like 1 in question) better managed using custom fact retrievers. fact retriever .net component implements ifactretriever. see documentation details. inside fact retriever implementation load xml (from disk) , assert working memory typedxmldocument.


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