MP–XQuery is a Metaproxy module that allows record conversion using W3C XML XQuery. The initial motivations for the module was to be able to BIBFRAME records via SRU/Z39.50. By using the https://github.com/lcnetdev/marc2bibframe code, this module can convert existing MARCXMLrecords to BIBFRAME records – on the fly – as part of retrieval.
MP–XQuery uses the Zorba query processor.