Difference between revisions of "API:EPrints"

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<!-- Pod2Wiki=_preamble_  
 
<!-- Pod2Wiki=_preamble_  
 
This page has been automatically generated from the EPrints 3.2 source. Any wiki changes made between the 'Pod2Wiki=*' and 'Edit below this comment' comments will be lost.
 
This page has been automatically generated from the EPrints 3.2 source. Any wiki changes made between the 'Pod2Wiki=*' and 'Edit below this comment' comments will be lost.
  -->
+
  -->{{API}}{{Pod2Wiki}}{{API:Source|file=EPrints|package_name=EPrints}}[[Category:API|EPRINTS]]<div><!-- Edit below this comment -->
__NOTOC__
 
{{Pod2Wiki}}{{API:Source|file=EPrints.pm|package_name=EPrints}}[[Category:API|EPrints]]<div><!-- Edit below this comment -->
 
  
  
<!-- Pod2Wiki=head_name --></div>
+
<!-- Pod2Wiki=_private_ --><!-- Pod2Wiki=head_name -->
 
==NAME==
 
==NAME==
'''EPrints''' - Institutional Repository software
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EPrints - Institutional Repository software
  
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<h4><span style='display:none'>User Comments</span></h4>
 
 
<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=head_synopsis --></div>
+
<!-- Pod2Wiki= -->
 +
<!-- Pod2Wiki=head_synopsis -->
 
==SYNOPSIS==
 
==SYNOPSIS==
  #!/usr/bin/perl -w -I/opt/eprints3/perl_lib
+
<source lang="perl">use EPrints qw();
 
 
  use EPrints;
 
  use strict;
 
 
 
  my $handle = new EPrints::Handle( 1 , 'my_repository_id' );
 
  exit( 1 ) unless( defined $handle );
 
 
 
  $eprint = new EPrints::DataObj::EPrint( $handle, 23 );
 
  my $title = $eprint-&gt;get_value( 'title' );
 
 
 
  $eprint-&gt;set_value( 'creators',
 
    [
 
      {
 
        name =&gt; { given=&gt;'John', family=&gt;'Smith' },
 
        id =&gt; 'js@example.com',
 
      },
 
      {
 
        name =&gt; { given=&gt;'Marvin', family=&gt;'Fenderson' },
 
        id =&gt; 'marvin@totl.net',
 
      },
 
    ]
 
  );
 
  $eprint-&gt;commit;
 
 
 
  my $eprint_ds = $handle-&gt;get_dataset( "eprint" );
 
  my $new_eprint = $eprint_ds-&gt;create_object(
 
    $handle, { title=&gt;"My new EPrint!" } );
 
 
 
  my $archive_ds = $handle-&gt;get_dataset( "archive" );
 
  my $search = new EPrints::Search(  
 
    handle =&gt; $handle,
 
    dataset =&gt; $archive_ds );
 
  my $date_mf = $archive_ds-&gt;get_field( "date" );
 
  $search-&gt;add_field( $date_mf, "2000-2003" );
 
 
 
  my $list = $search-&gt;perform_search;
 
  $list-&gt;map(
 
    sub {
 
      my( $handle, $dataset, $eprint, $info ) = @_;
 
 
 
      printf( "%s: %s\n",
 
        $eprint-&gt;get_value( "date" ),
 
        $eprint-&gt;get_value( "title" ) );
 
    }
 
  );
 
  $list-&gt;dispose();
 
 
 
  $handle-&gt;log( "We did some stuff." );
 
 
 
  if( some_test() ) { EPrints::abort( "Something bad happened" ); }
 
 
 
  $handle-&gt;terminate;
 
 
 
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<!-- Edit below this comment -->
 
  
 +
# don't check current user (CLI only)
 +
use EPrints qw( no_check_user );
  
<!-- Pod2Wiki=head_description --></div>
+
$eprints = EPrints->new;
==DESCRIPTION==
 
Using this module will cause all the other EPrints modules to be used also.
 
  
See http://www.eprints.org/ for more information about EPrints. Much more documentation can be found at http://wiki.eprints.org/w/Documentation
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# CLI
 +
$repo = $eprints->repository( "demoprints" );
  
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# CGI
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$repo = $eprints->current_repository;
<!-- Edit below this comment -->
 
  
 +
if( EPrints->VERSION() gt v3.2.0 )
 +
{
 +
...
 +
}</source>
  
<!-- Pod2Wiki=head_key_api_eprints_modules --></div>
 
===Key API EPrints Modules===
 
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints --></div>
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<!-- Pod2Wiki= -->
====EPrints====
+
<!-- Pod2Wiki=head_description -->
 
+
==DESCRIPTION==
This module! Used to load the other modules.
+
See http://www.eprints.org/.
  
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_dataobj --></div>
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<!-- Pod2Wiki= -->
====EPrints::DataObj====
+
<!-- Pod2Wiki=head_available_symbols -->
 
+
===Available Symbols===
Abstract object representing a single record in a DataSet. Has one subclass for each type of DataSet. The most important subclasses are listed below. This module documents generic functions which work on all (or most) data objects. Every DataObj has a unique ID within the dataset (an integer, with the exception of Subject). Every DataObj is given a URI of the form <em>repository_url</em>/id/<em>datasetid</em>/<em>dataobj_id</em>
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You can pass options to the EPrints package that effect the EPrints initialisation e.g.
 
 
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<!-- Edit below this comment -->
 
 
 
  
<!-- Pod2Wiki=item_eprints_dataobj_document --></div>
+
<pre> use EPrints qw( no_check_user );</pre>
====EPrints::DataObj::Document====
 
  
Represents a single document. A document is a set of metadata plus files. It *may* have some repository configuraed metadata in addition to the default. The metadata describes the document and is mostly concerned with formats, and rights. Documents belong to exactly one EPrints::DataObj::EPrint are are destroyed if it is destroyed. A document has one or more file. If there's more than one file then they are related, like a .css file for a .html
+
* no_check_user
 +
: Do not check the current user/group is the same as the user/group in SystemSettings.
  
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_dataobj_eprint --></div>
+
<!-- Pod2Wiki= -->
====EPrints::DataObj::EPrint====
+
<!-- Pod2Wiki=head_debugging -->
 +
===Debugging===
 +
To get a full stack trace on errors and warnings use {{API:PodLink|file=Carp|package_name=Carp|section=|text=Carp}}'s verbose mode. E.g. in ''perl_lib/EPrints/SystemSettings.pm'' add:
  
Represents a single submission to the repository. May have 0+ documents as sub-objects. Has both system defined metafields plus many defined in the repository configuration.
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<pre>  use Carp 'verbose';</pre>
  
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_dataset --></div>
+
<!-- Pod2Wiki= -->
====EPrints::DataSet====
+
<!-- Pod2Wiki=head_methods -->
 
+
==METHODS==
This object represents a set of objects of the same time, and has associated MetaFields and database tables. A dataset may represent a subset of another dataset. For example, "eprint" represents all EPrints::DataObj::EPrint objects, but the "buffer" dataset only represents those which are "under review".
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<!-- Pod2Wiki=head_VERSION -->
 
+
===VERSION===
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<!-- Edit below this comment -->
 
  
 +
<source lang="perl">$version = EPrints->VERSION()
  
<!-- Pod2Wiki=item_eprints_handle --></div>
+
</source>
====EPrints::Handle====
+
Returns the version of EPrints in 'v' format (this is the UNIVERSAL method).
  
the core of the EPrints API. This object represents a connection between the configuration for a repository, the database connection and either the CGI (web) or CLI (command line) interface.
 
 
Handle has a large number of methods, which are documented in more than one file:
 
 
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_handle_language --></div>
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<!-- Pod2Wiki= -->
====EPrints::Handle::Language====
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<!-- Pod2Wiki=head_human_version -->
 
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===human_version===
Handle methods for i18n.
 
 
 
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<!-- Edit below this comment -->
 
 
 
  
<!-- Pod2Wiki=item_eprints_handle_render --></div>
+
<source lang="perl">EPrints->human_version()
====EPrints::Handle::Render====
 
  
Handle methods for generating XHTML as XML::DOM objects.
+
</source>
 +
Returns the EPrints version in a human-readable form.
  
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_handle_cgi --></div>
+
<!-- Pod2Wiki= -->
====EPrints::Handle::CGI====
+
<!-- Pod2Wiki=head_abort -->
 +
===abort===
  
Handle methods for working with the mod_perl connection.
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<source lang="perl">EPrints->abort( $errmsg )
  
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+
</source>
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+
This subroutine is loaded before other modules so that it may be used to report errors when initialising modules.
<!-- Edit below this comment -->
 
  
 +
When running under Mod_Perl this method is replaced.
  
<!-- Pod2Wiki=item_eprints_handle_page --></div>
 
====EPrints::Handle::Page====
 
 
Handle methods for generating and serving XHTML web pages.
 
 
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<h4><span style='display:none'>User Comments</span></h4>
 
 
<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_handle_xml --></div>
+
<!-- Pod2Wiki= -->
====EPrints::Handle::XML====
+
<!-- Pod2Wiki=head_dump -->
 
+
===dump===
Handle methods for creating XML::DOM objects.
 
 
 
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<!-- Edit below this comment -->
 
  
 +
<source lang="perl">EPrints->dump( $VAR1 [, $VAR2 ... ] )
  
<!-- Pod2Wiki=item_eprints_list --></div>
+
</source>
====EPrints::List====
+
Use {{API:PodLink|file=Data/Dumper|package_name=Data::Dumper|section=|text=Data::Dumper}} to dump the passed variables to STDERR.
  
A list of zero or more data-objects in a single dataset. It can be constructed from a list of ID's or returned as the result of a search.
 
 
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_metafield --></div>
+
<!-- Pod2Wiki= -->
====EPrints::MetaField====
+
<!-- Pod2Wiki=head_new -->
 +
===new===
  
A single field in a dataset. It has many subclasses, one for each type of field.
+
<source lang="perl">$ep = EPrints->new();
  
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+
</source>
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+
Construct a new EPrints system object.
<!-- Edit below this comment -->
 
  
 
<!-- Pod2Wiki=item_eprints_repository --></div>
 
====EPrints::Repository====
 
 
Represents the configuration, datasets and dataobjects of a single repository. It is loaded from the configuration files and is essentially read-only.
 
 
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_search --></div>
+
<!-- Pod2Wiki= -->
====EPrints::Search====
+
<!-- Pod2Wiki=head_repository -->
 +
===repository===
  
The search object takes parameters and returns a List object of matching dataobjs from a given dataset. It can also be used it reverse to test if a dataobj matches it's parameters.
+
<source lang="perl">$repo = $ep->repository( $repository_id, [%options] );
  
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+
</source>
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+
Return the [[API:EPrints/Repository|EPrints::Repository]] with the given ID, or undef. Options are... optional.
<!-- Edit below this comment -->
 
  
 +
Options noise=&gt;1, etc.
  
<!-- Pod2Wiki=head_other_api_eprints_modules --></div>
 
===Other API EPrints Modules===
 
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_box --></div>
+
<!-- Pod2Wiki= -->
====EPrints::Box====
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<!-- Pod2Wiki=head_current_repository -->
 
+
===current_repository===
A utitility module to render HTML boxes with style and javascript roll-up animations.
 
 
 
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<!-- Edit below this comment -->
 
  
 +
<source lang="perl">$repo = $ep->current_repository();
  
<!-- Pod2Wiki=item_eprints_database --></div>
+
</source>
====EPrints::Database====
+
Returns the current [[API:EPrints/Repository|EPrints::Repository]]. The current  repository is determined by the apache request.
  
An object representing a connection to the database for a repository. This is an abstraction over sub-objects which connect to MySQL or Oracle.
+
Returns undef if there is no current repository active.
  
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_dataobj_file --></div>
+
<!-- Pod2Wiki= -->
====EPrints::DataObj::File====
 
 
 
Represents a single file in a document with some basic metadata such as checksums.
 
 
 
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_dataobj_user --></div>
+
<!-- Pod2Wiki= -->
====EPrints::DataObj::User====
+
<!-- Pod2Wiki=head_see_also -->
 
+
==SEE ALSO==
Represents a single registered user of the repository. Used for keeping track of preferences, profile information and rights management.
+
[[API:EPrints/Repository|EPrints::Repository]]
  
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_dataobj_subject --></div>
+
<!-- Pod2Wiki= -->
====EPrints::DataObj::Subject====
+
<!-- Pod2Wiki=head_copyright -->
 
+
==COPYRIGHT==
This dataset is used to store the structure of heierachichal(sp?) sets, used by the "Subject" metafield type.
+
Copyright 2000-2011 University of Southampton.
 
 
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<!-- Edit below this comment -->
 
 
 
 
 
<!-- Pod2Wiki=item_eprints_email --></div>
 
====EPrints::Email====
 
 
 
Tool for sending email.
 
 
 
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<!-- Edit below this comment -->
 
 
 
 
 
<!-- Pod2Wiki=item_eprints_paginate --></div>
 
====EPrints::Paginate====
 
 
 
Tools for rendering an EPrint::List as paginated HTML.
 
 
 
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<!-- Edit below this comment -->
 
 
 
 
 
<!-- Pod2Wiki=item_eprints_paginate_columns --></div>
 
====EPrints::Paginate::Columns====
 
 
 
An extension to EPrints::Paginate which shows the results in sortable columns, as seen in Items and Review screens.
 
 
 
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<!-- Edit below this comment -->
 
 
 
 
 
<!-- Pod2Wiki=item_eprints_storage --></div>
 
====EPrints::Storage====
 
 
 
Methods to abstract the process of reading and writing files. EPrints 3.2 introduced the possibility of storing files in the cloud, or in other storage devices, and this module is the interface to that.
 
 
 
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<!-- Edit below this comment -->
 
 
 
 
 
<!-- Pod2Wiki=item_eprints_tempdir --></div>
 
====EPrints::TempDir====
 
 
 
Tools for creating and destorying temporary directories.
 
 
 
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<!-- Edit below this comment -->
 
 
 
 
 
<!-- Pod2Wiki=item_eprints_time --></div>
 
====EPrints::Time====
 
 
 
A set of methods for handling time and converting between time formats.
 
  
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+
This file is part of EPrints &lt;http://www.eprints.org/&gt;.
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<!-- Edit below this comment -->
 
  
 +
EPrints is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
  
<!-- Pod2Wiki=item_eprints_url --></div>
+
EPrints is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
====EPrints::URL====
 
  
Utility methods for generating and getting URLs, relative paths etc.
+
You should have received a copy of the GNU Lesser General Public License along with EPrints.  If not, see &lt;http://www.gnu.org/licenses/&gt;.
  
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
  
  
<!-- Pod2Wiki=item_eprints_utils --></div>
+
<!-- Pod2Wiki= -->
====EPrints::Utils====
+
<!-- Pod2Wiki=_postamble_ -->
 
 
Misc. utility methods.
 
 
 
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<!-- Edit below this comment -->
 
<!-- Edit below this comment -->
 
 
<!-- Pod2Wiki=item_eprints_xml --></div>
 
====EPrints::XML====
 
 
Utility methods for working with XML and DOM. This papers over the cracks between the 3 different XML DOM libraries EPrints supports.
 
 
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<!-- Edit below this comment -->
 
 
 
<!-- Pod2Wiki=head_available_symbols --></div>
 
===Available Symbols===
 
You can pass options to the EPrints package that effect the EPrints initialisation e.g.
 
 
  use EPrints qw( no_check_user );
 
 
 
<div style='background-color: #eef; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
<h4><span style='display:none'>User Comments</span></h4>
 
<!-- Edit below this comment -->
 
 
 
<!-- Pod2Wiki=item_no_check_user --></div>
 
====no_check_user====
 
 
Do not check the current user/group is the same as the user/group in Systemsettings.
 
 
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===Debugging Slow Processes===
 
This module installs a signal handler that will print a stack trace if given a USR2 signal (if your system supports this signal). To print a stack trace to the error log execute:
 
 
$ kill -USR2 PID
 
 
 
Where PID is the id number of the stalled process.
 
 
A shell script will print the stack trace to the console.
 
 
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==METHODS==
 
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<!-- Pod2Wiki=item_abort --></div>
 
===EPrints::abort( $msg )===
 
 
Print an error message and exit. If running under mod_perl then print the error as a webpage and exit.
 
 
This subroutine is loaded before other modules so that it may be used to report errors when initialising modules.
 
 
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<!-- Pod2Wiki=head_see_also --></div>
 
==SEE ALSO==
 
[[API:EPrints/Handle|EPrints::Handle]]
 
 
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<!-- Pod2Wiki=head_copyright --></div>
 
==COPYRIGHT==
 
__COPYRIGHT__
 
 
Copyright 2000-2008 University of Southampton. All Rights Reserved.
 
 
__LICENSE__
 
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<!-- Pod2Wiki=_postamble_ --><!-- Edit below this comment -->
 

Latest revision as of 09:56, 22 January 2013

EPrints 3 Reference: Directory Structure - Metadata Fields - Repository Configuration - XML Config Files - XML Export Format - EPrints data structure - Core API - Data Objects


API: Core API

Latest Source Code (3.3, 3.2) | Revision Log | Before editing this page please read Pod2Wiki


NAME

EPrints - Institutional Repository software


SYNOPSIS

use EPrints qw();

# don't check current user (CLI only)
use EPrints qw( no_check_user );

$eprints = EPrints->new;

# CLI
$repo = $eprints->repository( "demoprints" );

# CGI
$repo = $eprints->current_repository;

if( EPrints->VERSION() gt v3.2.0 )
{
	...
}


DESCRIPTION

See http://www.eprints.org/.


Available Symbols

You can pass options to the EPrints package that effect the EPrints initialisation e.g.

  use EPrints qw( no_check_user );
  • no_check_user
Do not check the current user/group is the same as the user/group in SystemSettings.


Debugging

To get a full stack trace on errors and warnings use Carp's verbose mode. E.g. in perl_lib/EPrints/SystemSettings.pm add:

  use Carp 'verbose';


METHODS

VERSION

$version = EPrints->VERSION()

Returns the version of EPrints in 'v' format (this is the UNIVERSAL method).


human_version

EPrints->human_version()

Returns the EPrints version in a human-readable form.


abort

EPrints->abort( $errmsg )

This subroutine is loaded before other modules so that it may be used to report errors when initialising modules.

When running under Mod_Perl this method is replaced.


dump

EPrints->dump( $VAR1 [, $VAR2 ... ] )

Use Data::Dumper to dump the passed variables to STDERR.


new

$ep = EPrints->new();

Construct a new EPrints system object.


repository

$repo = $ep->repository( $repository_id, [%options] );

Return the EPrints::Repository with the given ID, or undef. Options are... optional.

Options noise=>1, etc.


current_repository

$repo = $ep->current_repository();

Returns the current EPrints::Repository. The current repository is determined by the apache request.

Returns undef if there is no current repository active.



SEE ALSO

EPrints::Repository


COPYRIGHT

Copyright 2000-2011 University of Southampton.

This file is part of EPrints <http://www.eprints.org/>.

EPrints is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

EPrints is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with EPrints. If not, see <http://www.gnu.org/licenses/>.