Hi,
the default value treatment for python scripts is now using the default
specified in the execute method signature, e.g.;
def execute(a, b=10)
There is however a catch, what if we wanted to give a a default value,
and not b? Python syntax apparently forces one to put arguments
with a certain default value last, but the meaningful order of inputs
in a process might suggest us a different order.
So, would you mind if we also add a default option, in parallel
to checking the method default values?
Basically the process writer would have two ways to specify
a default, the python way, or the metadata “default” value,
with the latter taking precedence if both are defined.
Cheers
Andrea
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Ing. Andrea Aime
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GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
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I wonder if this is really necessary. This is a well known aspect of the python language and it doesn’t seem unreasonable to have the limitation that any parameter with a default value would have to be ordered after one without a default value? Actually it seems pretty logical to me to order the parameters in that way.
···
On Wed, May 28, 2014 at 7:45 AM, Andrea Aime <andrea.aime@anonymised.com> wrote:
Hi,
the default value treatment for python scripts is now using the default
specified in the execute method signature, e.g.;
def execute(a, b=10)
There is however a catch, what if we wanted to give a a default value,
and not b? Python syntax apparently forces one to put arguments
with a certain default value last, but the meaningful order of inputs
in a process might suggest us a different order.
So, would you mind if we also add a default option, in parallel
to checking the method default values?
Basically the process writer would have two ways to specify
a default, the python way, or the metadata “default” value,
with the latter taking precedence if both are defined.
Cheers
Andrea
–
==
Meet us at GEO Business 2014! in London! Visit http://goo.gl/fES3aK
for more information.
Ing. Andrea Aime
@geowolf
Technical Lead
GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549
http://www.geo-solutions.it
http://twitter.com/geosolutions_it
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