Difference between revisions of "Adding a Field to a Live Repository"

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[[Category:Manual]]
 
[[Category:Manual]]
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[[Category:Howto]]
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[[Category:Metadata Fields]]
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[[Category: Out of Date]]
  
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To add a field to a live eprints archive you have to modify the SQL tables.
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=== EPrints 3.3+ ===
  
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Before you start this you may wish to BackupTheDatabase.
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Follow the instructions as you would for [[HOW TO: Add a New Field]].
  
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This assumes you are adding a field to the "eprint" fields, not the "user" fields. If you are changing "user" then anywhere we have 4 actions, one for each of buffer, deletion, archive and inbox, you instead need a single action for "users".
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As described there, you define your new fields in...
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* <code>/opt/eprints3/archives/ARCHIVEID/cfg/cfg.d/eprint_fields.pl</code> for EPrint-level metadata,
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* <code>/opt/eprints3/archives/ARCHIVEID/cfg/cfg.d/document_fields.pl</code> for document-level metadata (this file doesn't exist by default, but is honoured),  
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* and <code>/opt/eprints3/archives/ARCHIVEID/cfg/cfg.d/user_fields.pl</code> for user metadata, etc etc.
  
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Adding fields of type "name" is beyond the scope of these instructions.
 
  
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== Recipe (for Eprints 3.x) ==
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Since a repository's <code>eprint_fields.pl</code> will override a flavour's <code>eprint_fields.pl</code> based on them both having the same file name, should you only wish to add to a flavour's fields rather than replace them, you may prefer to give your archive's local version a file name such as <code>eprint_fields_local.pl</code>, and then inside have only your new field(s):
  
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This is much the same as for Eprints 2.x except that the names have been changed to protect the innocent.
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push @{$c->{fields}->{eprint}},
 +
 +
{
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name => 'my_first_new_field',
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type => 'set',
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options => [
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    'yes',
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    'no',
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    'partial',
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],
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input_rows => 1,
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},
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 +
{
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name => 'my_second_new_field',
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type => 'set',
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options => [
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    'yes',
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    'no',
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    'partial',
 +
],
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input_rows => 1,
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},
 +
 +
;
  
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* Define your new fields in <tt>archives/ARCHIVEID/cfg/cfg.d/eprint_fields.pl</tt> for EPrint-level metadata, <tt>.../document_fields.pl</tt> for document-level metadata (this file doesn't exist by default, but is honoured), <tt>.../user_fields.pl</tt> for user metadata, etc etc.
 
  
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=== EPrints 3.0 ===
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Simply make sure your <code>push</code>, is adding your field to the correct dataset you wish to add fields to - in this case an <code>eprint</code> dataset.
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 +
 
 +
 
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Then, once you have added your new field definitions to the appropriate configuration file you can run ''update'' via [[API:bin/epadmin|epadmin]] from the shell.
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 +
 
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You can begin with a dry run to see what would happen:
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 +
./bin/epadmin update_dry_run ARCHIVEID
 +
 
 +
Then once confident proceed for real:
 +
 
 +
./bin/epadmin update ARCHIVEID
 +
 
  
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* Add the new columns to the appropriate tables. There are no longer four separate tables for eprints as there were in EP2 (<tt>archive</tt>, <tt>buffer</tt> etc), so it's simpler.
 
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** For a field defined in <tt>eprint_fields.pl</tt>, the tables are <tt>eprint</tt> and <tt>eprint__ordervalues_en</tt> (replacing <tt>en</tt> with your language as required).
 
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** For a field defined in <tt>document_fields.pl</tt>, you want <tt>document</tt> and <tt>document__ordervalues_en</tt>.
 
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** And so on.
 
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* The column types are the same as for EP2, ie in <tt>eprint</tt> you want a type appropriate to the type of your field exactly as described in the Recipe for EP2 above, while in <tt>eprint__ordervalues_en</tt> you want <tt>text</tt> irrespective of your field type.
 
  
 
=== EPrints 3.1+ ===
 
=== EPrints 3.1+ ===
  
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Once you have added your new field definitions to the appropriate configuration file you can run the update_database_structure epadmin method from the shell:
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EPrint 3.3's ''update'' is a synonym of the ''update_database_structure'' method available from Eprints 3.1+:
  
 
  ./bin/epadmin update_database_structure ARCHIVEID
 
  ./bin/epadmin update_database_structure ARCHIVEID
 +
 +
 +
=== EPrints 3.0 ===
 +
 +
To add a field to a live eprints archive in Eprints 3.0 you have to modify the SQL tables.
 +
Before you start this, you may wish to BackupTheDatabase.
 +
 +
* Add the new columns to the appropriate tables. There are no longer four separate tables for eprints as there were in EP2 (<code>archive</code>, <code>buffer</code> etc), so it's simpler.
 +
** For a field defined in <code>eprint_fields.pl</code>, the tables are <code>eprint</code> and <code>eprint__ordervalues_en</code> (replacing <code>en</code> with your language as required).
 +
** For a field defined in <code>document_fields.pl</code>, you want <code>document</code> and <code>document__ordervalues_en</code>.
 +
** And so on...
 +
* The column types are the same as for EP2, ie in <code>eprint</code> you want a type appropriate to the type of your field exactly as described in the Recipe for EP2, while in <code>eprint__ordervalues_en</code> you want <code>text</code> irrespective of your field type.
 +
 +
 +
=== EPrints 2.x ===
 +
 +
See historical versions of this wiki page.

Latest revision as of 17:24, 17 July 2023


EPrints 3.3+

Follow the instructions as you would for HOW TO: Add a New Field.

As described there, you define your new fields in...

  • /opt/eprints3/archives/ARCHIVEID/cfg/cfg.d/eprint_fields.pl for EPrint-level metadata,
  • /opt/eprints3/archives/ARCHIVEID/cfg/cfg.d/document_fields.pl for document-level metadata (this file doesn't exist by default, but is honoured),
  • and /opt/eprints3/archives/ARCHIVEID/cfg/cfg.d/user_fields.pl for user metadata, etc etc.


Since a repository's eprint_fields.pl will override a flavour's eprint_fields.pl based on them both having the same file name, should you only wish to add to a flavour's fields rather than replace them, you may prefer to give your archive's local version a file name such as eprint_fields_local.pl, and then inside have only your new field(s): 

push @{$c->{fields}->{eprint}},

{
	name => 'my_first_new_field',
	type => 'set',
	options => [
	    'yes',
	    'no',
	    'partial',
	],
	input_rows => 1,
},

{
	name => 'my_second_new_field',
	type => 'set',
	options => [
	    'yes',
	    'no',
	    'partial',
	],
	input_rows => 1,
},

;


Simply make sure your push, is adding your field to the correct dataset you wish to add fields to - in this case an eprint dataset.


Then, once you have added your new field definitions to the appropriate configuration file you can run update via epadmin from the shell.


You can begin with a dry run to see what would happen: 

./bin/epadmin update_dry_run ARCHIVEID

Then once confident proceed for real: 

./bin/epadmin update ARCHIVEID


EPrints 3.1+

EPrint 3.3's update is a synonym of the update_database_structure method available from Eprints 3.1+: 

./bin/epadmin update_database_structure ARCHIVEID


EPrints 3.0

To add a field to a live eprints archive in Eprints 3.0 you have to modify the SQL tables. Before you start this, you may wish to BackupTheDatabase.

  • Add the new columns to the appropriate tables. There are no longer four separate tables for eprints as there were in EP2 (archive, buffer etc), so it's simpler.
    • For a field defined in eprint_fields.pl, the tables are eprint and eprint__ordervalues_en (replacing en with your language as required).
    • For a field defined in document_fields.pl, you want document and document__ordervalues_en.
    • And so on...
  • The column types are the same as for EP2, ie in eprint you want a type appropriate to the type of your field exactly as described in the Recipe for EP2, while in eprint__ordervalues_en you want text irrespective of your field type.


EPrints 2.x

See historical versions of this wiki page.

Retrieved from ‘https://wiki.eprints.org/w/index.php?title=Adding_a_Field_to_a_Live_Repository&oldid=16083’