Handler files to allow Pure's CRIS to create and modify items on EPrints

1. Deploy the plugins/PDA directory (either by copying of symlinking) to <EPRINTS_PATH>/site_lib/plugins/PDA.
2. If you are running EPrints 3.4+, make sure site_lib is listed in your <EPRINTS_PATH>/flavours/pub_lib/inc file.
3. Copy the configuration file cfg.d/z\_pda\_handler.pl to the file <EPRINTS_PATH>/archives/<ARCHIVEID>/cfg/cfg.d/z_pda_handler.pl.
4. Make any required modifications to <EPRINTS_PATH>/archives/<ARCHIVEID>/cfg/cfg.d/z_pda_handler.pl. Typically, this would be to add fields to $c->{pda}->{preserve_fields} if you do not want Pure to be able to overwrite these if it is updating an item in EPrints.
5. If you are running an EPrints version lower than 3.4.2, you will need to manually add the custom handlers' hook to <EPRINTS_PATH>/perl_lib/EPrints/Apache/Rewrite.pm. See instructions below.
6. Reload the webserver. (E.g. apachectl graceful).

1. In a text editor open <EPRINTS_PATH>/perl_lib/EPrints/Apache/Rewrite.pm and go to the line below the block of code labelled URI Redirection.
2. Copy the following code into place:

  	# Custom Handlers
	if ( defined $repository->config( "custom_handlers" ) && keys %{$repository->config( "custom_handlers" )} )
	{
		while ( my ($ch, $custom_handler) = each ( %{ $repository->config( "custom_handlers" ) } ) )
		{
			my $ch_regex = $custom_handler->{regex};
			$ch_regex =~ s/URLPATH/$urlpath/;
			if ( $uri =~ m! $ch_regex !x )
			{
				return $custom_handler->{function}->( $r );
			}
		}
	}

3. Carry on with the usage instructions above.