I have some magic (verging on voodoo) that may help here :o)

 

Changes to an EPrint are logged in the 'history' dataset.

Normally the 'actor' recorded is the user who was logged in when the change was made.

In the case of a script making the change, the name/path of the script is used as the actor.

 

In the database, run a query like:

SELECT DISTINCT actor from history WHERE actor LIKE '%lift_embargo%';

 

I get a few values like:

/opt/eprints3/bin/lift_embargos

/opt/eprints/bin/lift_embargos

bin/lift_embargos wrro

/usr/share/eprints/bin/lift_embargos wrro

 

-the variations come from moving from Solaris to RHEL, and different ways the script has been run in the past.

 

For a given EPrint, you can construct a search of the history dataset, for an actor returned in the query above.

From the search results, you should be able to:

- get the revision XML file for this change

- get the revision XML file for the previous change

- run an XPath query to see if the document that has had an embargo lifted is a document version (in your situation, 'stage') that you're interested in (accepted or published).

 

This outline process was the result of a discussion with LSE on a similar theme.

I think this could be implemented as a bin script. I would not recommend that this forms part of the commit trigger - I think it might be a bit heavy/slow for that process.

It hasn't been turned into a 'full' solution - but this could be done if there is a need for it.

 

Hope that glimpse of the dark-arts has helped!

John

 

 

Just looking at this again, in its raw form how is the plugin expected to handle any deposits that are valid but, for example, have come out of embargo before the plugin has been installed? For example, if I have a record that was added to the repository on 21/2/2016 and left embargo on 6/11/2016, I’d want the date of First Compliant Deposit to be 21/2/2016 and the Date of First Compliant Open Access to be 6/11/2016. It seems that if I install the plugin on 1/12/2017, and recommitted the records then it would set both dates to be 1/12/2017? Am I getting this backwards, as my tests on existing data are showing that to be the case…

 

 

So what we need is some way of checking that open access rule for the embargo date – I guess if we want to detect whether it’s the embargo date or the published date that we need is going to be tricky? Maybe adding a field to the REF tab would be better and letting the repository staff manually enter that?

 

 

As long as you're not poking data straight into the database, then everything should be handled without any regular jobs.

The calculations all happen when an EPrint is committed (which is also cascaded when a document is committed).

 

 

Yeah, I thought so – so in a realistic scenario we’d never be able to use the embargo date as the date of first open access – BUT, I guess that’s where setting the date on the trigger to the CURRENT date comes in.

 

With this plugin should we be running a regular recommit (i.e. cron job) to catch updated information?

 

 

It removes it in the lift_embargos script (<EPRINTS_ROOT>/bin/lift_emabargos)

 

 

Okay… so would my logic work in this instance to use the embargo date for the open access date? But it would only activate that POST embargo? Or does EPrints remove the embargo date once the embargo has been lifted?

 

 

This is why the 'pending compliance' measure was introduced.

This will be displayed if the embargo period is appropriate for the panel selected - but that the embargo is still active.

 

Cheers,

John

 

 

Thanks Andy,

 

I’ve passed this to our repository manager for her thoughts as to how she was expecting it to work. I don’t know if she wasn’t hoping to see the embargo date appear here regardless…

 

 

Hi,

My understanding is that it does not set the date of first compliant open access until it IS open access, i.e when the embargo has passed, and the lift-embargos script has set security to public.  It is not intended to set that ahead of time on the assumption the embargo will be lifted at the date projected

 

Andy

 

 

Ah, so if it’s setting the value incorrectly based on our set up then that value will always be incorrect unless we put in something to override that.

 

Okay, so I’ve tested some things by commenting out that part of the logic and it’s definitely running my script. I think the issue is certainly that I was testing it on records that had already had their values set. So, what we need to do, I guess, is make sure our custom logic is right, put the plugin on live, add our custom code and then hit recommit before anyone does anything that’s going to add these two dates?

 

The logic we’re working on is:

 

For First Compliant Deposit –

Is the document accepted or published?

Set the date based on the datestamp of the record

 

For First Compliant Open Access –

Is the document a Whole Document?

Is it accepted or published?

Is it public?

Set the date based on the embargo date of the document OR the datestamp of the record if there is no embargo date on the document

 

And my code is:

 

# date of first compliant deposit - this uses our value of "stage"

$c->add_dataset_trigger( 'eprint', EPrints::Const::EP_TRIGGER_BEFORE_COMMIT, sub

{

                my( %args ) = @_;

                my( $repo, $eprint, $changed ) = @args{qw( repository dataobj changed )};

 

                # trigger only applies to repos with hefce_oa plugin enabled

                return unless $eprint->dataset->has_field( "hoa_compliant" );

 

                return if $eprint->is_set( "hoa_date_fcd" );

                return if $eprint->value( "eprint_status" ) eq "inbox";

 

                for( $eprint->get_all_documents )

                {

                                next unless $_->is_set( "stage" );

                                next unless $_->value( "stage" ) eq "accepted" || $_->value( "stage" ) eq "published";

                                $eprint->set_value( "hoa_date_fcd", $eprint->value( "datestamp" ) );

                                $eprint->set_value( "hoa_version_fcd", $_->value( "stage" ) eq "accepted" ? "AM" : "VoR" );

                }

}, priority => 100 );

 

# date of first compliant open access

$c->add_dataset_trigger( 'eprint', EPrints::Const::EP_TRIGGER_BEFORE_COMMIT, sub

{

                my( %args ) = @_;

                my( $repo, $eprint, $changed ) = @args{qw( repository dataobj changed )};

 

                # trigger only applies to repos with hefce_oa plugin enabled

                return unless $eprint->dataset->has_field( "hoa_compliant" );

 

                return unless $eprint->is_set( "hoa_date_fcd" );

                return if $eprint->is_set( "hoa_date_foa" );

 

                for( $eprint->get_all_documents )

                {

                                next unless $_->is_set( "content" );

                                next unless $_->value( "content" ) eq " whole_document";

                                next unless $_->is_set( "stage" );

                                next unless $_->value( "stage" ) eq "accepted" || $_->value( "stage" ) eq "published";

                                next unless $_->is_public;

                                if($_->isset( "date_embargo" ))

                                {

                                                $eprint->set_value( "hoa_date_foa",  $_->value( "date_embargo" ) );

                                }

                                else

                                {

                                                $eprint->set_value( "hoa_date_foa",  $eprint->value( "datestamp" ) );

                                }

                }

}, priority => 200 );

 

However I can’t seem to get the trigger for the foa to register anything. I’ll try your suggestion of dropping some outputs into the loop to see what steps it’s hitting but if you can see anything glaring in my logic please let me know. I’m also not sure if the logic will really work with embargo dates as they need to be in the future – if that is the case then the document won’t be public and won’t satisfy that step of the logic…

 

I think I’m finally starting to understand some of this, though… literally weeks before I’m due to move away from it…

 

:rolleyes:

 

 

It does exactly that – it sets it the first time and then doesn’t change it.

 

The easiest (dirty) way I’ve found to check it’s processing my override code is to put a

 

print STDERR “My Local Override_Function_Name: Doing this bit now\n”;

 

in the function, which should then appear in the apache error log.

 

 

 

 

Actually, looking at the code in more detail, for example this trigger (my modified version):

 

# date of first compliant deposit - this uses our value of "stage"

$c->add_dataset_trigger( 'eprint', EPrints::Const::EP_TRIGGER_BEFORE_COMMIT, sub

{

                my( %args ) = @_;

                my( $repo, $eprint, $changed ) = @args{qw( repository dataobj changed )};

 

                # trigger only applies to repos with hefce_oa plugin enabled

                return unless $eprint->dataset->has_field( "hoa_compliant" );

 

                return if $eprint->is_set( "hoa_date_fcd" );

                return if $eprint->value( "eprint_status" ) eq "inbox";

 

                for( $eprint->get_all_documents )

                {

                                next unless $_->is_set( "stage" );

                                next unless $_->value( "stage" ) eq "accepted" || $_->value( "stage" ) eq "published";

                                $eprint->set_value( "hoa_date_fcd", $_->value( "datestamp" ) );

                                $eprint->set_value( "hoa_version_fcd", $_->value( "stage" ) eq "accepted" ? "AM" : "VoR" );

                }

}, priority => 100 );

 

Does the line return if $eprint->is_set( "hoa_date_fcd" ); mean that if the date is already set, it won’t be recalculated?

 

 

 

Thanks John!

 

Okay, I’ve made some progress on this but I’m coming a little unstuck on the Date of First Compliant Deposit and Date of First Compliant Open Access.

 

So, for both of these I’ve needed to make a alight adjustment as we store our “accepted”, “published” etc in a variable called “stage”. No problem, I’ve switched “content” up for “stage” and I’m getting a date through now based, looking at the code, on EPrints::Time::get_iso_date(). The issue I have is that in all instances this is showing as todays date.

 

Speaking to Bev about how she wants this to work, she’s expecting to see:

 

First Compliant Deposit – the date the record was created, so I assume the datestamp value of the record?

 

First Compliant Open Access – the date the record was created OR the embargo date if one is set.

 

Once I’ve got these setting as expected I think I can get this deployed.

 

Any thoughts?

 

 

Hi Andrew,
Some parts of the REF_CC plugin can be overridden in the configuration.
Have a look at the stuff in ~/lib/cfg.d/ - anything that starts $c->{'something'} can be overridden in an archive specific config file.

If there are specific things you're trying to do that don't seem to be covered by this, you know where to ask!

Cheers,
John

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