ZeroX: XQuery Enabled Workflows
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BPEL-like languages are the standard in the enterprise world for
specifying Web processes, but they lack native data processing
features.  We present ZeroX, an extension of the Project Zero Flow
language, developed at IBM, that uses XQuery to enable a rich set of
XML processing capabilities inside workflow activities.  We show how
to compile ZeroX into DXQ, an extension of XQuery with side-effects,
distribution and parallelism. We also demonstrate the capabilities of
the system by using ZeroX to build a small Web application to look for
and apply for dance classes, integrating several Web sources. Our
implementation uses the DXQ capabilities which are part of Galax, an
open source XQuery processor.