| Re: [bpel-dev] What makes 2 element type compatible? |
Joni,
two elements are compatible if
... a.) their QName (qualifiedName), that is : name and namespace of
the type that is associated with the element are exactly the same
(simpleCheck)
... b.) the assignee is SuperType of the Assigner. Example: have two
types "string" and "myString" (derived from String either by extension or
restriction),
so then I could assign the less general type (myString) to
the more general type (string) . In general, deciding XSD Type
Compatibility is not easy.
From: Joni Lee <webcokies@xxxxxxxxx>
To: bpel-dev@xxxxxxxxxxx
Date: 08.12.2009 18:49
Subject: [bpel-dev] What makes 2 element type compatible?
Sent by: bpel-dev-bounces@xxxxxxxxxxx
Hi Michael,
Thank you for all your help. From my current school project, I need to understand the assignment and type compatibility. I have a new question.
Example, we have an assigment from a message's part from type element to another message's part from type element. What makes the 2 element
compatible?
1. When they (and their children) must have the same element name.
2. Their name can be different but the data type, which defines the elements is the same. Which means their structures "look" the same.
3. Two elements are not required to be compatible at all, because the destination element will be replaced by the source element (replace by element
in 8.4.2). If this is right, then 2 very different elements can be assigned, no matter how they are?
Thank you again and again.
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