Name
cx:eval — Evaluate a dynamically constructed pipeline.
Synopsis
<p:declare-step type="cx:eval" xmlns:cx="http://xmlcalabash.com/ns/extensions">
<p:input port="pipeline"/>
<p:input port="source" sequence="true"/>
<p:input port="options"/>
<p:output port="result"/>
<p:option name="step"/> <!-- QName -->
<p:option name="detailed"/> <!-- boolean --></p:declare-step>
Description
In the simplest case, where the specified pipeline has a single
input and a single output, the document(s) on the source
port are passed to the pipeline, processed, and the results are passed
back on the result port.
If the pipeline specified has multiple inputs or outputs, then the
inputs and outputs have to be “multiplexed” on the single port. If this is
the case, you must specify that the detailed option is
“true”, and encode the input using cx:document.
Each input must be wrapped in cx:document with a
port attribute that identifies the port to
which that document is to be sent. Each output will be wrapped in a
cx:document element identifying the port from which it came.
If the pipeline has options, they are passed to the options
port. Each options document must have cx:options as its document
element and consist entirely of cx:option elements with
name and value
attributes that specify options and their values.
If the pipeline is a p:library, then the step to evaluate
may be specified using the step option. If the pipeline is
a library and no step option is specified, the first step in the library will
be selected.