Difference between revisions of "API:EPrints/DataObj/Cachemap"

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==DESCRIPTION==
 
==DESCRIPTION==
This is an internal class that shouldn't be used outside [[API:EPrints/Database|EPrints::Database]].
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This is an internal class that shouldn't be used outside [[API:EPrints/Database|EPrints::Database]].
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==CORE METADATA FIELDS==
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===cachemapid (int)===
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The unique numerical ID of this cachemap object.
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===created (int)===
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The time the cachemap record was created in seconds since start of  last epoch.
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===lastused (int)===
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The time the cachemap record was last used in seconds since start of last epoch.
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===userid (itemref)===
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Reference to the userid of the user who caused the cachemap record to be created, if this is known.
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===searchexap (longtext)===
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A serialisation of the search carried out that is stored in this cachemap record.
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===oneshot (boolean)===
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DEPRECATED. A boolean to record whether the cache is for single use where it will be created, used and immediately deleted.  Such as  type of caching is no longer required.
  
 
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Revision as of 10:29, 27 December 2021

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 (3.4, 3.3) | Revision Log | Before editing this page please read Pod2Wiki


NAME

EPrints::DataObj::Cachemap - Cache tables

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DESCRIPTION

This is an internal class that shouldn't be used outside EPrints::Database.

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CORE METADATA FIELDS

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cachemapid (int)

The unique numerical ID of this cachemap object.

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created (int)

The time the cachemap record was created in seconds since start of last epoch.

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lastused (int)

The time the cachemap record was last used in seconds since start of last epoch.

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userid (itemref)

Reference to the userid of the user who caused the cachemap record to be created, if this is known.

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searchexap (longtext)

A serialisation of the search carried out that is stored in this cachemap record.

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oneshot (boolean)

DEPRECATED. A boolean to record whether the cache is for single use where it will be created, used and immediately deleted. Such as type of caching is no longer required.

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METHODS

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create_from_data

EPrints::DataObj::Cachemap->create_from_data( $session, $data, $dataset )

Creates a new cachemap data object in the database.

$dataset is the dataset it will belong to.

$data is the data structured as with EPrints::DataObj#new_from_data.

This will create sub-objects as well.

Call this via:

$dataset->create_object( $session, $data )
 

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get_system_field_info

$fields = EPrints::DataObj::Access->get_system_field_info

Core fields.

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Class Methods

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get_dataset_id

$dataset = EPrints::DataObj::Cachemap->get_dataset_id

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

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get_defaults

$defaults = EPrints::DataObj::Cachemap->get_defaults( $session, $data )

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

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cleanup

$dropped = EPrints::DataObj::Cachemap->cleanup( $repository )

Clean up old caches for specified $repository.

Returns the number of caches dropped.

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Object Methods

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remove

$rc = $cachemap->remove

Remove this record from the data set and the cache table from the database.

Returns a code based of success of removing record / cache table.

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get_sql_table_name

$sql_name = $cachemap->get_sql_table_name

Returns the name of the cache table for this cachemap record.

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create_sql_table

$ok = $cachemap->create_sql_table( $dataset )

Create the cachemap database table that can store IDs for the specified $dataset.

Returns code based on the success of creating cache table.

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SEE ALSO

EPrints::DataObj and EPrints::DataSet.

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COPYRIGHT

© Copyright 2022 University of Southampton.

EPrints 3.4 is supplied by EPrints Services.

http://www.eprints.org/eprints-3.4/

LICENSE

This file is part of EPrints 3.4 http://www.eprints.org/.

EPrints 3.4 and this file are released under the terms of the GNU Lesser General Public License version 3 as published by the Free Software Foundation unless otherwise stated.

EPrints 3.4 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 3.4. If not, see http://www.gnu.org/licenses/.

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