API:EPrints/Repository

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

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API: Core API

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NAME

EPrints::Repository - Single connection to a specific EPrints Repository

DESCRIPTION

This module is really a Repository, REALLY. The name is up to date and everything :-)

EPrints::Repository represents a connection to the EPrints system. It connects to a single EPrints repository, and the database used by that repository.

Each Repository has a "current language". If you are running in a multilingual mode, this is used by the HTML rendering functions to choose what language to return text in.

The Repository object also knows about the current apache connection, if there is one, including the CGI parameters.

If the connection requires a username and password then it can also give access to the EPrints::DataObj::User object representing the user who is causing this request. See current_user().

The Repository object also provides access to the EPrints::XHTML class which contains many methods for creating XHTML results which can be returned via the web interface.

METHODS

new

$repository = EPrints::Repository->new( %opts )

Creates and returns a new repository object. This is a utility object only and will only have the basic system configuration available.

new

$repository = EPrints::Repository->new( $repository_id, %opts )

Create a connection to an EPrints repository $repository_id which provides access to the database and to the repository configuration.

Options:

  db_connect - 1
  check_db - 1
  noise - 0

query

$query = $repository->query

Return the CGI object describing the current HTTP query, or undefined if this isn't a CGI script.

param

$value or @values = $repository->param( $name )

Passes through to CGI.pm param method.

$value = $repository->param( $name ): returns the value of CGI parameter $name.

$value = $repository->param( $name ): returns the value of CGI parameter $name.

@values = $repository->param: returns an array of the names of all the CGI parameters in the current request.

xml

$xml = $repo->xml

Return an EPrints::XML object for working with XML.

xhtml

$xhtml = $repo->xhtml

Return an EPrints::XHTML object for working with XHTML.

eprint

$eprint = $repository->eprint( $eprint_id );

A convience method to return the EPrints::DataObj::EPrint with the given ID, or undef.

Equivent to $repository->dataset("eprint")->dataobj( $eprint_id )

current_user

$user = $repository->current_user

Return the current logged in EPrints::DataObj::User for this session.

Return undef if there isn't one.

user

$user = $repository->user( $user_id );

A convience method to return the EPrints::DataObj::User with the given ID, or undef.

Equivent to $repository->dataset("user")->dataobj( $user_id )

user_by_username

$user = $repository->user_by_username( $username );

Return the user with the given username, or undef.

user_by_email

$user = $repository->user_by_email( $email );

Return the EPrints::DataObj::User with the given email, or undef.

dataset

$dataset = $repository->dataset( $setname )

Return a given EPrints::DataSet or undef if it doesn't exist.

config

$confitem = $repository->config( $key, [@subkeys] )

Returns a named configuration setting including those defined in archvies/<archive_id>/cfg/cfg.d/

$repository->config( "stuff", "en", "foo" )

is equivalent to

$repository->config( "stuff" )->{en}->{foo}

log

$repository->log( $msg [, $level ] )

Log a plain text message $msg. If $level is given only logs if $level is greater than or equal to noise.

To override where log messages are sent define the log callback:

  $c->{log} = sub {
    my( $repo, $msg, $level ) = @_;
  
    ...
  };

call

$result = $repository->call( $cmd, @params )

Calls the subroutine named $cmd from the configuration perl modules for this repository with the given params and returns the result.

can_call

$boolean = $repository->can_call( @cmd_conf_path )

Return true if the given subroutine exists in this repository's config package.

try_call

$result = $repository->try_call( $cmd, @params )

Calls the subroutine named $cmd from the configuration perl modules for this repository with the given params and returns the result.

If the subroutine does not exist then quietly returns undef.

This is used to call deprecated callback subroutines.

template_dirs

@dirs = $repository->template_dirs( $langid )

Returns a list of directories from which template files may be sourced, where the first matching template encountered is used.

The directories searched are:

  archives/[archiveid]/cfg/lang/[langid]/templates/
  archives/[archiveid]/cfg/templates/
  archives/[archiveid]/cfg/themes/[themeid]/lang/[langid]/templates/
  archives/[archiveid]/cfg/themes/[themeid]/templates/
  lib/themes/[themeid]/templates/
  lib/lang/[langid]/templates/
  lib/templates/

id

$id = $repository->id

Returns the id string of this repository.

exec

$returncode = $repository->exec( $cmd_id, %map )

Executes a system command. $cmd_id is the id of the command as set in SystemSettings and %map contains a list of things to "fill in the blanks" in the invocation line in SystemSettings.

test_config

( $returncode, $output) = $repository->test_config

This runs "epadmin test" as an external script to test if the current configuraion on disk loads OK. This can be used by the web interface to test if changes to config. files may be saved, or not.

$returncode will be zero if everything seems OK.

If not, then $output will contain the output of epadmin test

reload_config

$ok = $repository->reload_config

Trigger a configuration reload on the next request/index.

To reload the configuration right now just call load_config.

noise

$noise_level = $repository->noise

Return the noise level for the current session. See the explaination under EPrints::Repository->new()

DOM Related Methods

These methods help build XML. Usually, but not always XHTML.

InternalDoc

XHTML Related Methods

These methods help build XHTML.

InternalDoc

Methods relating to the current XHTML page

InternalDoc

Methods related to Plugins

InternalDoc

$repo->init_from_indexer( $daemon )

(Re)initialise the repository object for use by the indexer.

Calls check_last_changed.

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/.