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<?php
/**
* Contains class which offers functionality for reading and updating Translate group
* related metadata
*
* @file
* @author Niklas Laxström
* @author Santhosh Thottingal
* @copyright Copyright © 2012-2013, Niklas Laxström, Santhosh Thottingal
* @license GPL-2.0-or-later
*/
class TranslateMetadata {
/** @var array Map of (group => key => value) */
private static $cache = [];
/** @param string[] $groups List of translate groups */
public static function preloadGroups( array $groups ) {
$missing = array_keys( array_diff_key( array_flip( $groups ), self::$cache ) );
if ( !$missing ) {
return;
}
self::$cache += array_fill_keys( $missing, null ); // cache negatives
$dbr = TranslateUtils::getSafeReadDB();
$conds = count( $missing ) <= 500 ? [ 'tmd_group' => $missing ] : [];
$res = $dbr->select(
'translate_metadata',
[ 'tmd_group', 'tmd_key', 'tmd_value' ],
$conds,
__METHOD__
);
foreach ( $res as $row ) {
self::$cache[$row->tmd_group][$row->tmd_key] = $row->tmd_value;
}
}
/**
* Get a metadata value for the given group and key.
* @param string $group The group name
* @param string $key Metadata key
* @return string|bool
*/
public static function get( $group, $key ) {
self::preloadGroups( [ $group ] );
return self::$cache[$group][$key] ?? false;
}
/**
* Get a metadata value for the given group and key.
* If it does not exist, return the default value.
* @param string $group
* @param string $key
* @param string $defaultValue
* @return string
*/
public static function getWithDefaultValue(
string $group, string $key, string $defaultValue
): string {
$value = self::get( $group, $key );
return $value === false ? $defaultValue : $value;
}
/**
* Set a metadata value for the given group and metadata key. Updates the
* value if already existing.
* @param string $group The group id
* @param string $key Metadata key
* @param string $value Metadata value
*/
public static function set( $group, $key, $value ) {
$dbw = wfGetDB( DB_MASTER );
$data = [ 'tmd_group' => $group, 'tmd_key' => $key, 'tmd_value' => $value ];
if ( $value === false ) {
unset( $data['tmd_value'] );
$dbw->delete( 'translate_metadata', $data, __METHOD__ );
unset( self::$cache[$group][$key] );
} else {
$dbw->replace(
'translate_metadata',
[ [ 'tmd_group', 'tmd_key' ] ],
$data,
__METHOD__
);
self::$cache[$group][$key] = $value;
}
}
/**
* Wrapper for getting subgroups.
* @param string $groupId
* @return string[]|null
* @since 2012-05-09
*/
public static function getSubgroups( string $groupId ): ?array {
$groups = self::get( $groupId, 'subgroups' );
if ( is_string( $groups ) ) {
if ( strpos( $groups, '|' ) !== false ) {
$groups = explode( '|', $groups );
} else {
$groups = array_map( 'trim', explode( ',', $groups ) );
}
foreach ( $groups as $index => $id ) {
if ( trim( $id ) === '' ) {
unset( $groups[$index] );
}
}
} else {
$groups = null;
}
return $groups;
}
/**
* Wrapper for setting subgroups.
* @param string $groupId
* @param array $subgroupIds
* @since 2012-05-09
*/
public static function setSubgroups( $groupId, $subgroupIds ) {
$subgroups = implode( '|', $subgroupIds );
self::set( $groupId, 'subgroups', $subgroups );
}
/**
* Wrapper for deleting one wiki aggregate group at once.
* @param string $groupId
* @since 2012-05-09
*/
public static function deleteGroup( $groupId ) {
$dbw = wfGetDB( DB_MASTER );
$conds = [ 'tmd_group' => $groupId ];
$dbw->delete( 'translate_metadata', $conds, __METHOD__ );
self::$cache[$groupId] = null;
}
}
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