[jboss-user] [JBoss jBPM] - Re: Assign-copy problem, very strange!

[alex.guizar@jboss.com]

anonymous wrote : How can I produce "fictive" copy?
  | 
  | That means, if I really want to copy only into 2-d parameter, how
  | can I "simulate" copy into 1-st parameter and really leave it untouched?

Well, the real problem is, according to your schema, the description element must be present:

<element name="description" nillable="true" type="string"/>
  | <element name="id" nillable="true" type="string"/>

nillable="true" means that the attribute xsi:nil may appear in the element, indicating that its value should be considered null. It does not mean that the element is optional. The following code gives the desired effect:

<assign>
  | 	<copy>
  | 		<from expression="'true'" />
  | 		<to variable="_createOrderMessage" part="root" query="/root/impl3:customerRoot/impl4:description/@xsi:nil" 
  | 		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" />
  | 	</copy>
  | 	<copy>
  | 		<from variable="_start" part="ID"/>
  | 		<to variable="_createOrderMessage" part="root" query="/root/impl3:customerRoot/impl4:id"/>
  | 	</copy>
  | </assign>

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