[EP-tech] Search results sorting by compound field elements

[Adam Field]

You can define a function that returns an ordervalue on any metadata field.  It'll look like this:

....
{
name => 'foo',
type => 'name',
multiple => 0,
make_value_orderkey => 'my_order_function'
}
...


$c->{my_order_function} = sub
{
my ($field, $value, $session, $langid, $dataset) = @_;

$familyname = $value->{family};
return md5($family);
}

Note that this is hazy, from memory and just typed straight into the email.  Also, don't forget to regenerate the order values (I believe it's an epadmin command).

[Jisc]<http://www.jisc.ac.uk/>

Adam Field
SHERPA services analyst developer


From: <eprints-tech-bounces at ecs.soton.ac.uk<mailto:eprints-tech-bounces at ecs.soton.ac.uk>> on behalf of "Alan.Stiles" <alan.stiles at open.ac.uk<mailto:alan.stiles at open.ac.uk>>
Reply-To: "eprints-tech at ecs.soton.ac.uk<mailto:eprints-tech at ecs.soton.ac.uk>" <eprints-tech at ecs.soton.ac.uk<mailto:eprints-tech at ecs.soton.ac.uk>>
Date: Wednesday, 20 April 2016 16:01
To: "eprints-tech at ecs.soton.ac.uk<mailto:eprints-tech at ecs.soton.ac.uk>" <eprints-tech at ecs.soton.ac.uk<mailto:eprints-tech at ecs.soton.ac.uk>>
Subject: Re: [EP-tech] Search results sorting by compound field elements

Half-answering my own question:

my %options = ("custom_order" => "name");
my $list = $ds->search(%options);

actually does what I want, but doesn’t resolve the larger question of sorting by sub-fields – e.g. if I wanted to sort the list by given name rather than family name…


From: eprints-tech-bounces at ecs.soton.ac.uk<mailto:eprints-tech-bounces at ecs.soton.ac.uk> [mailto:eprints-tech-bounces at ecs.soton.ac.uk] On Behalf Of Alan.Stiles
Sent: 20 April 2016 15:28
To: eprints-tech at ecs.soton.ac.uk<mailto:eprints-tech at ecs.soton.ac.uk>
Subject: [EP-tech] Search results sorting by compound field elements

Hi all,
Anyone got a clue how to format the ‘custom_order’ parameter of a dataset search query to sort by sub-fields of a compound field?

i.e. – running a search over the ‘user’ dataset and I want to sort the results by name_family then name_given of the compound ‘name’ field.

Currently running (based on the search method from http://wiki.eprints.org/w/API:EPrints/DataSet#Object_Methods ):

$list = $ds->search( {“custom_order” => “name_given/name_family” };

But it doesn’t seem to be sorting the list at all

Thanks,

Alan
-- The Open University is incorporated by Royal Charter (RC 000391), an exempt charity in England & Wales and a charity registered in Scotland (SC 038302). The Open University is authorised and regulated by the Financial Conduct Authority.

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