I read in the XQuery 1.0 spec that functions can be declared to be external,
like variables. For example:
declare function do-something($arg1, $arg2) external;
Does MarkLogic provide a way to set external functions? The spec says
implementations are not required to support this: "An XQuery implementation may
provide a facility whereby external
functions can be implemented using a host programming language, but
it is not required to do so."
http://www.w3.org/TR/xquery/#dt-external-function
I'm thinking there might be some value in this for being able to swap out
implementations of certain functions at runtime and avoid having to do some
module imports that may contribute to rigidity by importing the specific
implementing module at a specific location.
For example, instead of:
import module namespace web-service "/some/ns" at
"/modules/my-web-service-handler.xqy";
web-service:get-record("12345);
have
declare function get-record($key) external;
get-record("12345")
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