Xignite Engineering Examples, by Language
Full example, using Apache Axis2 to make authenticating web service calls via SOAP
Example snippet, also using Axis2, but manually circumventing an issue where a .NET enum with the FlagsAttribute is exposed, requiring an array of the enum type to be passed in, regardless of intended cardinality
Full example using the Savon SOAP gem
Note that this is not necessary; Xignite provides a RESTful API that can emit JSON.