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Home > Archive > BizTalk Server Orchestration > April 2004 > Use of unconstructed "DocumentOut" message - resolve how???
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Use of unconstructed "DocumentOut" message - resolve how???
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| I have created an Orchestration with two Schemas DocumentIn and DocumentOut.
I have then used a transformation shape and a Mapper to transform the message DocumentIn to DocumentOut.
I have then attempted to use a Classlibrary Class Method that takes in two XML arguments (DocumentIn and DocumentOut (messages)). The method transfers elements from DocumentIn and recreates/extends the DocumentOut with items from DocumentIn that could no
t be mapped. This is then returned as a new XmlDocument. The Class method is marked as [Serializable]. When I run the Class Method isolated from BizTalk everything works fine, however when I implement the Class Method in BizTalk I get "use of unconstru
cted message 'DocumentOut'" when trying to build the Orchestration. Error refers to the Construct Message Shape with a MessageAssignment Shape with the code "DocumentOut = MsgMgmt.AssignMsgPayLoad(DocumentIn, DocumentOut)".
Who do I resolve this? I realize I there must be missing some really simple concept I am missing here but the message does not give a reason why and I cannot find anything currently on the web.
Cheers,
H
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| Matt Milner 2004-04-15, 7:44 pm |
| you are trying to use the documentout message as a parameter to your method,
that's what it is complaining about since you are not out of the construct
shape yet. You might be able to get away with having a second construct
shape and documentout2. Then call your method passing in documentout and
gettting back documentout2. Keep in mind that messages should be immutable
in BTS so once you create a message, any changes should cause a new message
to be created.
matt
"H" <anonymous@discussions.microsoft.com> wrote in message
news:A2829101-E3A8-4638-BB5D-65756B1170A0@microsoft.com...
> I have created an Orchestration with two Schemas DocumentIn and
DocumentOut.
> I have then used a transformation shape and a Mapper to transform the
message DocumentIn to DocumentOut.
> I have then attempted to use a Classlibrary Class Method that takes in two
XML arguments (DocumentIn and DocumentOut (messages)). The method transfers
elements from DocumentIn and recreates/extends the DocumentOut with items
from DocumentIn that could not be mapped. This is then returned as a new
XmlDocument. The Class method is marked as [Serializable]. When I run the
Class Method isolated from BizTalk everything works fine, however when I
implement the Class Method in BizTalk I get "use of unconstructed message
'DocumentOut'" when trying to build the Orchestration. Error refers to the
Construct Message Shape with a MessageAssignment Shape with the code
"DocumentOut = MsgMgmt.AssignMsgPayLoad(DocumentIn, DocumentOut)".
>
> Who do I resolve this? I realize I there must be missing some really
simple concept I am missing here but the message does not give a reason why
and I cannot find anything currently on the web.
>
> Cheers,
>
> H
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| Thanks, my problem centered around the immutable nature of messages. The message could have been more meaningful especially as the Orchestration Designer shows everything is ok and only fails on build.
H
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