francis
Soap4r woes
posted Tuesday, 20 May 2008
Just in case this burns someone else
Talking to a web service that returns an array of mixed complex types (ooh goody!)
soap4r returns a lot of SOAP::Mapping::Object
These pretend to be a kind of hash (of hashes of hashes if you go really deep), so I could get my proposal back by the rather horrible
response.submitResult.returnMsg['Proposal']
(lots of console work required to get this far .. :))
I needed the proposal's ID and it was nowhere to be seen. When I looked at the wire trace it told me that the proposal ID was being returned as an attribute of the Proposal XML node.
Lots of pain and headscratching later discovered a blog post talking about the semi-hidden __xmlattr method, this is a proper hash but it is indexed using the qualified name class XSD::QName
So, to get the ID out we end up with ...
proposal_id_key = XSD::QName.new(nil,'proposalID')
response.submitResult.returnMsg['Proposal'].__xmlattr[proposal_id_key]
Let the joy be unconfined ... SOAP is another unnecessary PIA. Most of the time you *could* just post XML direct using HTTP(S). I can't see any benefit for the additional complexity.
If we didn't have soap4r I'd still be banging my head on the desk so +1 for that ...
Top tip, you can set $DEBUG=true in the console to get the wire trace.
Talking to a web service that returns an array of mixed complex types (ooh goody!)
soap4r returns a lot of SOAP::Mapping::Object
These pretend to be a kind of hash (of hashes of hashes if you go really deep), so I could get my proposal back by the rather horrible
response.submitResult.returnMsg['Proposal']
(lots of console work required to get this far .. :))
I needed the proposal's ID and it was nowhere to be seen. When I looked at the wire trace it told me that the proposal ID was being returned as an attribute of the Proposal XML node.
Lots of pain and headscratching later discovered a blog post talking about the semi-hidden __xmlattr method, this is a proper hash but it is indexed using the qualified name class XSD::QName
So, to get the ID out we end up with ...
proposal_id_key = XSD::QName.new(nil,'proposalID')
response.submitResult.returnMsg['Proposal'].__xmlattr[proposal_id_key]
Let the joy be unconfined ... SOAP is another unnecessary PIA. Most of the time you *could* just post XML direct using HTTP(S). I can't see any benefit for the additional complexity.
If we didn't have soap4r I'd still be banging my head on the desk so +1 for that ...
Top tip, you can set $DEBUG=true in the console to get the wire trace.
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