Difference between revisions of "API:EPrints/DataObj"

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<!-- Pod2Wiki=head_synopsis --></div>
+
<!-- Pod2Wiki=head_description --></div>
==SYNOPSIS==
+
==DESCRIPTION==
  $dataobj = EPrints::DataObj-&gt;new( $handle, $id [, $dataset] );
+
This module is a base class which is inherited by [[API:EPrints/DataObj/EPrint|EPrints::DataObj::EPrint]], [[API:EPrints/User|EPrints::User]], [[API:EPrints/DataObj/Subject|EPrints::DataObj::Subject]] and [[API:EPrints/DataObj/Document|EPrints::DataObj::Document]] and several other classes.
  $dataobj = $dataset-&gt;get_object( $id );
+
 
  $dataobj = $handle-&gt;get_XXXXX( $id );
+
It is ABSTRACT - its methods should not be called directly.
 
+
 
  $handle = $dataobj-&gt;get_handle;
+
  $dataset = $dataobj-&gt;get_dataset;
+
 
+
  $id = $dataobj-&gt;get_id;
+
  $uri = $dataobj-&gt;uri;
+
  $url = $dataobj-&gt;get_url;
+
  $url = $dataobj-&gt;get_control_url;
+
 
+
  $value = $dataobj-&gt;get_value( $fieldname );
+
  $bool = $dataobj-&gt;is_set( $fieldname );
+
  $bool = $dataobj-&gt;exists_and_set( $fieldname );
+
 
+
  $success = $dataobj-&gt;remove;
+
 
+
  $dataobj-&gt;set_value( $fieldname, $value );
+
  $success = $dataobj-&gt;commit( [$force] );
+
 
+
  $xhtml = $dataobj-&gt;render_value( $fieldname, [$showall] );
+
  $xhtml = $dataobj-&gt;render_citation( [$style], [%params] );
+
  $xhtml = $dataobj-&gt;render_citation_link( [$style], %params );
+
  $xhtml = $dataobj-&gt;render_citation_link_staff( [$style], %params );
+
  $xhtml = $dataobj-&gt;render_description;
+
  ($xhtml, $title ) = $dataobj-&gt;render;
+
  ($xhtml, $title ) = $dataobj-&gt;render_full;
+
 
+
  $plugin_output = $dataobj-&gt;export( $plugin_id [,%params] );
+
 
+
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
<div style='background-color: #e8e8f; 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>
 
<h4><span style='display:none'>User Comments</span></h4>
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<!-- Pod2Wiki=head_description --></div>
+
<!-- Pod2Wiki=item_get_system_field_info --></div>
==DESCRIPTION==
+
===$sys_fields = EPrints::DataObj-&gt;get_system_field_info===
This module is a base class which is inherited by [[API:EPrints/DataObj/EPrint|EPrints::DataObj::EPrint]], [[API:EPrints/User|EPrints::User]], [[API:EPrints/DataObj/Subject|EPrints::DataObj::Subject]] and [[API:EPrints/DataObj/Document|EPrints::DataObj::Document]] and several other classes.
+
  
It is ABSTRACT - these methods should not be called directly.
+
Return an array describing the system metadata of the this  dataset.
  
To create a new object in the database use:
 
 
  $obj = $ds-&gt;create_object( $handle, $data );
 
 
 
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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<h4><span style='display:none'>User Comments</span></h4>
 
<h4><span style='display:none'>User Comments</span></h4>
Line 69: Line 37:
  
 
<!-- Pod2Wiki=item_new --></div>
 
<!-- Pod2Wiki=item_new --></div>
===$dataobj = EPrints::DataObj-&gt;new( $handle, $id [, $dataset] )===
+
===$dataobj = EPrints::DataObj-&gt;new( $session, $id [, $dataset] )===
  
 
Return new data object, created by loading it from the database.
 
Return new data object, created by loading it from the database.
Line 80: Line 48:
  
  
<!-- Pod2Wiki=item_get_handle --></div>
+
<!-- Pod2Wiki=item_new_from_data --></div>
===$handle = $dataobj-&gt;get_handle===
+
===$dataobj = EPrints::DataObj-&gt;new_from_data( $session, $data [, $dataset ] )===
 +
 
 +
Construct a new EPrints::DataObj object based on the $data hash  reference of metadata.
  
Returns the EPrints::Handle object to which this record belongs.
+
Used to create an object from the data retrieved from the database.
 +
 
 +
<div style='background-color: #e8e8f; 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_create_subdataobj --></div>
 +
===$dataobj = $dataobj-&gt;create_subdataobj( $fieldname, $epdata )===
 +
 
 +
Creates and returns a new dataobj that is a sub-object of this object in field $fieldname with initial data $epdata.
 +
 
 +
Clears the sub-object cache for this $fieldname which is equivalent to:
 +
 
 +
  $dataobj-&gt;set_value( $fieldname, undef );
 +
 
 +
<div style='background-color: #e8e8f; 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_get_defaults --></div>
 +
===$defaults = EPrints::User-&gt;get_defaults( $session, $data, $dataset )===
 +
 
 +
Return default values for this object based on the starting data.
 +
 
 +
Should be subclassed.
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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Return true if successful.
 
Return true if successful.
 +
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_clear_changed --></div>
 +
===$dataobj-&gt;clear_changed( )===
 +
 +
Clear any changed fields, which will result in them not being committed unless force is used.
 +
 +
This method is used by the Database to avoid unnecessary commits.
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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For example "author.id/editor.id" would return a list of all author and editor ids from this record.
 
For example "author.id/editor.id" would return a list of all author and editor ids from this record.
 +
 +
<div style='background-color: #e8e8f; 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_get_session --></div>
 +
===$session = $dataobj-&gt;get_session===
 +
 +
Returns the EPrints::Session object to which this record belongs.
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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Returns a reference to the hash table of all the metadata for this record keyed  by fieldname.
 
Returns a reference to the hash table of all the metadata for this record keyed  by fieldname.
 +
 +
<div style='background-color: #e8e8f; 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_get_dataset_id --></div>
 +
===$dataset = EPrints::DataObj-&gt;get_dataset_id===
 +
 +
Returns the id of the [[API:EPrints/DataSet|EPrints::DataSet]] object to which this record belongs.
 +
 +
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_get_dataset --></div>
 +
===$dataset = $dataobj-&gt;get_dataset===
 +
 +
Returns the [[API:EPrints/DataSet|EPrints::DataSet]] object to which this record belongs.
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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This method is useful for plugins which may operate on multiple  repositories, and the fact a field does not exist is not an issue.
 
This method is useful for plugins which may operate on multiple  repositories, and the fact a field does not exist is not an issue.
 +
 +
<div style='background-color: #e8e8f; 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_get_id --></div>
 +
===$id = $dataobj-&gt;get_id===
 +
 +
Returns the value of the primary key of this record.
 +
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_get_gid --></div>
 +
===$id = $dataobj-&gt;get_gid===
 +
 +
DEPRECATED (see uri())
 +
 +
Returns the globally referential fully-qualified identifier for this object or undef if this object can not be externally referenced.
 +
 +
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_get_datestamp --></div>
 +
===$datestamp = $dataobj-&gt;get_datestamp===
 +
 +
Returns the datestamp of this object in "YYYY-MM-DD hh:mm:ss" format.
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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Renders a citation (as above) but as a link to the URL for this item. For example - the abstract page of an eprint.  
 
Renders a citation (as above) but as a link to the URL for this item. For example - the abstract page of an eprint.  
 
<div style='background-color: #e8e8f; 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_render_citation_link_staff --></div>
 
===$xhtml = $dataobj-&gt;render_citation_link_staff( [$style], %params )===
 
 
As for render_citation_link but the link goes to the edit URL for the item.
 
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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===$xhtml = $dataobj-&gt;render_description===
 
===$xhtml = $dataobj-&gt;render_description===
  
Returns a short description of this object using the "brief" citation style for this dataset.
+
Returns a short description of this object using the default citation style for this dataset.
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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<!-- Pod2Wiki=item_get_id --></div>
+
<!-- Pod2Wiki=item_uri --></div>
===$id = $dataobj-&gt;get_id===
+
===$url = $dataobj-&gt;uri===
  
Returns the value of the primary key of this record.
+
Returns a unique URI for this object. Not certain to resolve as a  URL.
  
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
+
If $c-&gt;{dataobj_uri}-&gt;{eprint} is a function, call that to work it out.
<h4><span style='display:none'>User Comments</span></h4>
+
<!-- Edit below this comment -->
+
 
+
 
+
<!-- Pod2Wiki=item_get_dataset --></div>
+
===$dataset = $dataobj-&gt;get_dataset===
+
 
+
Returns the [[API:EPrints/DataSet|EPrints::DataSet]] object to which this record belongs.
+
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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<!-- Pod2Wiki=item_uri --></div>
+
<!-- Pod2Wiki=item_internal_uri --></div>
===$uri = $dataobj-&gt;uri===
+
===$uri = $dataobj-&gt;internal_uri()===
  
Returns a unique URI for this object. Not certain to resolve as a URL.
+
Return an internal URI for this object (independent of repository hostname).
  
The URI is generally of the form <em>repository_url</em>/id/<em>datasetid</em>/<em>dataobj_id</em>
+
To retrieve an object by internal URI use [[API:EPrints/DataSet|EPrints::DataSet]]::get_object_from_uri().
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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Returns the URL for the control page for this object.  
 
Returns the URL for the control page for this object.  
 +
 +
<div style='background-color: #e8e8f; 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_get_type --></div>
 +
===$type = $dataobj-&gt;get_type===
 +
 +
Returns the type of this record - type of user, type of eprint etc.
 +
 +
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_to_xml --></div>
 +
===$xmlfragment = $dataobj-&gt;to_xml( %opts )===
 +
 +
Convert this object into an XML fragment.
 +
 +
%opts are:
 +
 +
no_xmlns=&gt;1 : do not include a xmlns attribute in the  outer element. (This assumes this chunk appears in a larger tree  where the xmlns is already set correctly.
 +
 +
showempty=&gt;1 : fields with no value are shown.
 +
 +
version=&gt;"code" : pick what version of the EPrints XML format to use "1" or "2"
 +
 +
embed=&gt;1 : include the data of a file, not just it's URL.
 +
 +
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_xml_to_epdata --></div>
 +
===$epdata = EPrints::DataObj-&gt;xml_to_epdata( $session, $xml, %opts )===
 +
 +
Populates $epdata based on $xml. This is the inverse of to_xml() but doesn't create a new object.
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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<!-- Pod2Wiki=item_export --></div>
 
<!-- Pod2Wiki=item_export --></div>
===$plugin_output = $dataobj-&gt;export( $plugin_id [,%params] )===
+
===$plugin_output = $detaobj-&gt;export( $plugin_id, %params )===
  
Apply an output plugin to this items. Return the results. No additional parameters are required for most export plugins.
+
Apply an output plugin to this items. Return the results.
 +
 
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 
 +
 
 +
<!-- Pod2Wiki=item_queue_changes --></div>
 +
===$dataobj-&gt;queue_changes===
 +
 
 +
Add all the changed fields into the indexers todo queue.
 +
 
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 
 +
 
 +
<!-- Pod2Wiki=item_queue_all --></div>
 +
===$dataobj-&gt;queue_all===
 +
 
 +
Add all the fields into the indexers todo queue.
 +
 
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 
 +
 
 +
<!-- Pod2Wiki=item_queue_fulltext --></div>
 +
===$dataobj-&gt;queue_fulltext===
 +
 
 +
Add a fulltext index into the indexers todo queue.
  
 
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<!-- Pod2Wiki=head_related_objects --></div>
 
<!-- Pod2Wiki=head_related_objects --></div>
 
===Related Objects===
 
===Related Objects===
These methods have been introduced in ep3.2 to describe the relationships between objects in the system.
 
 
See the wiki for more detailed discussion of how to use these.
 
 
  $dataobj-&gt;add_object_relations( $target, $has =&gt; $is [, $has =&gt; $is ] )
 
  $bool = $dataobj-&gt;has_object_relations( $target, @types )
 
  $bool = $dataobj-&gt;has_related_objects( @types )
 
  $dataobjs = $dataobj-&gt;get_related_objects( @types )
 
  $dataobj-&gt;remove_object_relations( $target [, $has =&gt; $is [, $has =&gt; $is ] )
 
 
 
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
<div style='background-color: #e8e8f; 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>
 
<h4><span style='display:none'>User Comments</span></h4>

Revision as of 16:34, 12 February 2010


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::DataObj - Base class for records in EPrints.

User Comments


DESCRIPTION

This module is a base class which is inherited by EPrints::DataObj::EPrint, EPrints::User, EPrints::DataObj::Subject and EPrints::DataObj::Document and several other classes.

It is ABSTRACT - its methods should not be called directly.

User Comments


$sys_fields = EPrints::DataObj->get_system_field_info

Return an array describing the system metadata of the this dataset.

User Comments


$dataobj = EPrints::DataObj->new( $session, $id [, $dataset] )

Return new data object, created by loading it from the database.

If $dataset is not defined uses the default dataset for this object.

User Comments


$dataobj = EPrints::DataObj->new_from_data( $session, $data [, $dataset ] )

Construct a new EPrints::DataObj object based on the $data hash reference of metadata.

Used to create an object from the data retrieved from the database.

User Comments


$dataobj = $dataobj->create_subdataobj( $fieldname, $epdata )

Creates and returns a new dataobj that is a sub-object of this object in field $fieldname with initial data $epdata.

Clears the sub-object cache for this $fieldname which is equivalent to:

 $dataobj->set_value( $fieldname, undef );
 

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$defaults = EPrints::User->get_defaults( $session, $data, $dataset )

Return default values for this object based on the starting data.

Should be subclassed.

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$success = $dataobj->remove

Remove this data object from the database and any sub-objects or related files.

Return true if successful.

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$dataobj->clear_changed( )

Clear any changed fields, which will result in them not being committed unless force is used.

This method is used by the Database to avoid unnecessary commits.

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$success = $dataobj->commit( [$force] )

Write this object to the database and reset the changed fields.

If $force isn't true then it only actually modifies the database if one or more fields have been changed.

Commit may also queue indexer jobs or log changes, depending on the object.

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$value = $dataobj->get_value( $fieldname )

Get a the value of a metadata field. If the field is not set then it returns undef unless the field has the property multiple set, in which case it returns [] (a reference to an empty array).

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$dataobj->set_value( $fieldname, $value )

Set the value of the named metadata field in this record.

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@values = $dataobj->get_values( $fieldnames )

Returns a list of all the values in this record of all the fields specified by $fieldnames. $fieldnames should be in the format used by browse views - slash seperated fieldnames with an optional .id suffix to indicate the id part rather than the main part.

For example "author.id/editor.id" would return a list of all author and editor ids from this record.

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$session = $dataobj->get_session

Returns the EPrints::Session object to which this record belongs.

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$data = $dataobj->get_data

Returns a reference to the hash table of all the metadata for this record keyed by fieldname.

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$dataset = EPrints::DataObj->get_dataset_id

Returns the id of the EPrints::DataSet object to which this record belongs.

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$dataset = $dataobj->get_dataset

Returns the EPrints::DataSet object to which this record belongs.

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$bool = $dataobj->is_set( $fieldname )

Returns true if the named field is set in this record, otherwise false.

Warns if the field does not exist.

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$bool = $dataobj->exists_and_set( $fieldname )

Returns true if the named field is set in this record, otherwise false.

If the field does not exist, just return false.

This method is useful for plugins which may operate on multiple repositories, and the fact a field does not exist is not an issue.

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$id = $dataobj->get_id

Returns the value of the primary key of this record.

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$id = $dataobj->get_gid

DEPRECATED (see uri())

Returns the globally referential fully-qualified identifier for this object or undef if this object can not be externally referenced.

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$datestamp = $dataobj->get_datestamp

Returns the datestamp of this object in "YYYY-MM-DD hh:mm:ss" format.

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$xhtml = $dataobj->render_value( $fieldname, [$showall] )

Returns the rendered version of the value of the given field, as appropriate for the current session. If $showall is true then all values are rendered - this is usually used for staff viewing data.

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$xhtml = $dataobj->render_citation( [$style], [%params] )

Renders the record as a citation. If $style is set then it uses that citation style from the citations config file. Otherwise $style defaults to the type of this record. If $params{url} is set then the citiation will link to the specified URL.

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$xhtml = $dataobj->render_citation_link( [$style], %params )

Renders a citation (as above) but as a link to the URL for this item. For example - the abstract page of an eprint.

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$xhtml = $dataobj->render_description

Returns a short description of this object using the default citation style for this dataset.

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($xhtml, $title ) = $dataobj->render

Return a chunk of XHTML DOM describing this object in the normal way. This is the public view of the record, not the staff view.

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($xhtml, $title ) = $dataobj->render_full

Return an XHTML table in DOM describing this record. All values of all fields are listed. This is the staff view.

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$url = $dataobj->uri

Returns a unique URI for this object. Not certain to resolve as a URL.

If $c->{dataobj_uri}->{eprint} is a function, call that to work it out.

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$uri = $dataobj->internal_uri()

Return an internal URI for this object (independent of repository hostname).

To retrieve an object by internal URI use EPrints::DataSet::get_object_from_uri().

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$url = $dataobj->get_url

Returns the URL for this record, for example the URL of the abstract page of an eprint.

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$url = $dataobj->get_control_url

Returns the URL for the control page for this object.

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$type = $dataobj->get_type

Returns the type of this record - type of user, type of eprint etc.

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$xmlfragment = $dataobj->to_xml( %opts )

Convert this object into an XML fragment.

%opts are:

no_xmlns=>1 : do not include a xmlns attribute in the outer element. (This assumes this chunk appears in a larger tree where the xmlns is already set correctly.

showempty=>1 : fields with no value are shown.

version=>"code" : pick what version of the EPrints XML format to use "1" or "2"

embed=>1 : include the data of a file, not just it's URL.

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$epdata = EPrints::DataObj->xml_to_epdata( $session, $xml, %opts )

Populates $epdata based on $xml. This is the inverse of to_xml() but doesn't create a new object.

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$plugin_output = $detaobj->export( $plugin_id, %params )

Apply an output plugin to this items. Return the results.

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$dataobj->queue_changes

Add all the changed fields into the indexers todo queue.

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$dataobj->queue_all

Add all the fields into the indexers todo queue.

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$dataobj->queue_fulltext

Add a fulltext index into the indexers todo queue.

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$boolean = $dataobj->has_owner( $user )

Return true if $user owns this record. Normally this means they created it, but a group of users could count as owners of the same record if you wanted.

It's false on most dataobjs, except those which override this method.

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$boolean = $dataobj->in_editorial_scope_of( $user )

As for has_owner, but if the user is identified as someone with an editorial scope which includes this record.

Defaults to true. Which doesn't mean that they have the right to edit it, just that their scope matches. You also need editor rights to use this. It's currently used just to filter eprint editors so that only ones with a scope AND a priv can edit.

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$problems = $dataobj->validate( [ $for_archive ], $workflow_id )

Return a reference to an array of XHTML DOM objects describing validation problems with the entire $dataobj based on $workflow_id.

If $workflow_id is undefined defaults to "default".

A reference to an empty array indicates no problems.

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$warnings = $dataobj->get_warnings( )

Return a reference to an array of XHTML DOM objects describing problems with the entire $dataobj.

A reference to an empty array indicates no problems.

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$file = $dataobj->add_stored_file( $filename, $filehandle [, $filesize ] )

Convenience method to add the file record for $filename to this object. Reads data from $filehandle. If $filesize is defined it may used to determine where the file should be stored.

Returns the file object or undef if the storage failed.

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$file = $dataobj->get_stored_file( $filename )

Get the file object for $filename.

Returns the file object or undef if the file doesn't exist.

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Related Objects

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$dataobj->add_object_relations( $target, $has => $is [, $has => $is ] )

Add a relation between this object and $target of type $has. If $is is defined will also add the reciprocal relationship $is from $target to this object. May be repeated to add multiple relationships.

You must commit $target after calling this method.

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$bool = $dataobj->has_object_relations( $target, @types )

Returns true if this object is related to $target by all @types.

If @types is empty will return true if any relationships exist.

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$bool = $dataobj->has_related_objects( @types )

Returns true if get_related_objects() would return some objects, but without actually retrieving the related objects from the database.

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$dataobjs = $dataobj->get_related_objects( @types )

Returns a list of objects related to this object by @types.

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$dataobj->remove_object_relations( $target [, $has => $is [, $has => $is ] )

Remove relations between this object and $target. If $has => $is pairs are defined will only remove those relationships given.

You must commit $target after calling this method.

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