Editing API:EPrints/DataObj/SavedSearch

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==NAME==
'''EPrints::DataObj::SavedSearch''' - Single saved search.

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==DESCRIPTION==
A saved search is a sub class of [[API:EPrints/DataObj/SubObject|EPrints::DataObj::SubObject]].

Each one belongs to one and only one user, although one user may own multiple saved searches.

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==CORE METADATA FIELDS==
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===id (counter)===

The ID of the saved search,

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===name (text)===

A name assigned to the saved search.

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===spec (search)===

A serialization of the search specification.

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===frequency (set)===

How often to send saves search email updates.

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===mailempty (boolean)===

Whether to send saved search  email updates if there are no results.

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===additional_recipients (text)===

Additional email addresses to send updates about saved search results.

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===public (boolean)===

If the saved search results should be publicly accessible.

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==REFERENCES AND RELATED OBJECTS==
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===userid (itemref)===

The ID of the user to whom created this saved search.

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==INSTANCE VARIABLES==
Also see [[API:&lt;EPrints/DataObj#INSTANCE_VARIABLES|EPrints::DataObj]].

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===$self-&gt;{user}===

The user who owns this saved search.

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==METHODS==
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===Constructor Methods===
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====create====

 $saved_search = EPrints::DataObj::SavedSearch-&gt;create( $session, $userid )
Creates a new saved search, belonging to user with ID <tt>$userid</tt>.

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===Class Methods===
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====get_system_field_info====

 $field_config = EPrints::DataObj::SavedSearch-&gt;get_system_field_info
Returns an array describing the system metadata of the saved search  dataset.

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====get_dataset_id====

 $dataset = EPrints::DataObj::SavedSearch-&gt;get_dataset_id
Returns the ID of the [[API:EPrints/DataSet|EPrints::DataSet]] object to which this record  belongs.

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===Object Methods===
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====get_dataset====

 $dataset = $saved_search-&gt;get_dataset
Get the dataset that this saved search covers.

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====commit====

 $success = $saved_search-&gt;commit( [ $force ] )
Writes this object to the database.

If <tt>$force</tt> is not true then it only actually modifies the database if one or more fields have been changed.

Returns <tt>true</tt> if commit was successfully. Otherwise, returns  <tt>false</tt>.

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====get_user====

 $user = $saved_search-&gt;get_user
Returns the <tt>EPrints::DataObj::User</tt> which owns this saved search.

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====make_searchexp====

 $searchexp = $saved_search-&gt;make_searchexp
Returns an [[API:EPrints/Search|EPrints::Search]] describing how to find the data objects which are in the scope of this saved search.

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====send_out_alert====

 $saved_search-&gt;send_out_alert
Sends out an email for this subscription. If there are no matching new data objects then an email is only sent if the saved search has  <tt>mailempty</tt> set to <tt>true</tt>.

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====has_owner====

 $boolean = $saved_search-&gt;has_owner( $possible_owner )
Returns <tt>true</tt> if <tt>$possible_owner</tt> is the same as the owner of this saved search. Otherwise, returns <tt>false</tt>.

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<!-- Pod2Wiki=item_parent -->
====parent====

 $parent = $saved_search-&gt;parent
Returns the parent data object for this saved search. I.e. the user  who owns this saved search.  This is similar to [[API:EPrints/DataObj/SavedSearch#get_user|get_user]] but is  not as fault tolerant and does set instance variable: 

 $self-&gt;{user}
  
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====get_url====

 $url = $saved_search-&gt;get_url( [ $staff ] )
Gets the URL for this saved search.  Currently <tt>$staff</tt> will not  effect the URL but in future this may return a specialised URL for  staff only.

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<!-- Pod2Wiki=head_utility_methods -->
===Utility Methods===
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<!-- Pod2Wiki=item_process_set -->
====process_set====

 EPrints::DataObj::SavedSearch::process_set( $session, $frequency );
Static method. 

Calls <tt>send_out_alert</tt> on every saved search with a frequency  matching <tt>$frequency</tt>.

Also saves a file logging that the alerts for this frequency was sent  out at the current time.

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<!-- Pod2Wiki=item_get_last_timestamp -->
====get_last_timestamp====

 $timestamp = EPrints::DataObj::SavedSearch::get_last_timestamp( $session, $frequency );
Static method.

Return sthe timestamp of the last time this <tt>$frequency</tt> of alert was  sent.

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==SEE ALSO==
[[API:EPrints/DataObj/SubObject|EPrints::DataObj::SubObject]], [[API:EPrints/DataObj|EPrints::DataObj]] and  [[API:EPrints/DataSet|EPrints::DataSet]].

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==COPYRIGHT==
{{API:Copyright}}
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