[wsrp-wsia] [I#191] Returning binary data from getMarkup is notsupported wel l

Issue: 191
Status: Active
Topic: 
interface
Class: Technical
Raised by: Andre Kramer
Title: Returning 
binary data from getMarkup is not supported well
Date Added: 
18-Dec-2002
Document Section:   v0.85/5.1.8
Description:
"A 
producer wishing to return binary MIME data can do so by specifying a binary 
markup type in  markupContext.markupType but must return the markup as 
""string markup"" in MarkupContext. It is unclear how the data is encoded as a 
string (i.e. not specified by WSDL) and the Web stack is not leveraged. 
A
related problem area is that of allowing the consumer to specify 
MarkupParams.markupCharacterSet versus the char encoding actually used by the 
Web method."
Resolution:

"Allowing MarkupContext.markup to be 
base64 rather than always encoded to a string would address both issues and 
allows Web stacks to do the heavy lifting. Suggest replacing:
<element 
name=""markupType"" type=""xsd:string"" minOccurs=""0""/>
<element 
name=""markup"" type=""xsd:string"" minOccurs=""0""/>
with:
<element 
name=""markupType"" type=""xsd:string"" minOccurs=""0""/>
<element 
name=""markupString"" type=""xsd:string"" minOccurs=""0""/>
<element 
name=""markupBytes"" type=""xsd:base64Binary"" minOccurs=""0""/>
This 
scheme de-seralizes bytes to/from byte[]. It can be readily mapped to an 
attachment (once WSDL support is more ubiquitous). Unfortunately, not all stacks 
support <choice/> so we can't use that more natural representation but the 
above does not waste any bandwidth as the elements are 
minOccurs=""0""."