implicit option connections

Hi,

In XProc 1.0 primary input and output ports are implicitly connected, if 
no explicit connection is declared. This is very convenient, because you 
can write more compact code.

I wonder if we can have the same feature for options in XProc 3.0? In 
our pipelines, we use frequently the same set of options. With 1.0 we 
are forced to declare them explicitely for each step. IMHO, this results 
in many redundant code lines and makes the pipeline harder to read. 
Therefore, I would propose to specifiy implicit option connections for 3.0:

If one or more options are in the scope of a step which expects these 
options, they should be automatically passed to the step. In this case, 
it should not be required to declare them explicitely with 
<p:with-option> unless you want to.

The pipeline below provides a brief demonstration of implicitely 
connected options.

<?xml version="1.0" encoding="UTF-8"?>
<p:declare-step xmlns:p="http://www.w3.org/ns/xproc"
   xmlns:c="http://www.w3.org/ns/xproc-step"
   version="3.0">

   <p:input port="source">
     <p:inline>
       <doc>Hello world!</doc>
     </p:inline>
   </p:input>
   <p:output port="result"/>

   <p:option name="attribute-name" select="'foo'"/>
   <p:option name="attribute-value" select="'bar'"/>

   <p:add-attribute match="/doc"/>

</p:declare-step>

In case, you want to avoid an implicit connection, the easiest way to do 
so is to declare the option explitely. If you do not want that the 
option is declared at all, I would suggest to add an empty 
<p:with-option/> for that step.

Please let me know, what do you think about implicit option connections?

Kind regards,

Martin

-- 
Martin Kraetke
Lead Content Engineer
le-tex publishing services GmbH

Weissenfelser Str. 84, 04229 Leipzig, Germany
Phone +49 341 355356 143, Fax +49 341 355356 543
martin.kraetke@le-tex.de, http://www.le-tex.de

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Received on Thursday, 30 November 2017 10:21:42 UTC