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<?php
namespace SMW\SQLStore;
use RuntimeException;
use SMW\DIProperty;
use SMW\MediaWiki\Database;
/**
* @private
*
* @license GNU GPL v2+
* @since 2.5
*
* @author mwjames
*/
class PropertyTypeFinder {
/**
* @var Database
*/
private $connection;
/**
* @var string
*/
private $typeTableName = '';
/**
* @since 2.5
*
* @param Database $connection
*/
public function __construct( Database $connection ) {
$this->connection = $connection;
}
/**
* @since 2.5
*
* @param string $typeTableName
*/
public function setTypeTableName( $typeTableName ) {
$this->typeTableName = $typeTableName;
}
/**
* @since 2.5
*
* @param DIProperty $property
*
* @return string
* @throws RuntimeException
*/
public function findTypeID( DIProperty $property ) {
try {
$row = $this->connection->selectRow(
SQLStore::ID_TABLE,
[
'smw_id'
],
[
'smw_namespace' => SMW_NS_PROPERTY,
'smw_title' => $property->getKey(),
'smw_iw' => '',
'smw_subobject' => ''
],
__METHOD__
);
} catch ( \Exception $e ) {
$row = false;
}
if ( !isset( $row->smw_id ) ) {
return $GLOBALS['smwgPDefaultType'];
}
if ( $this->typeTableName === '' ) {
throw new RuntimeException( "Missing a table name" );
}
// The Finder is executed before tables are initialized with a corresponding
// and matchable DIHandler therefore using Store::getPropertyValue cannot
// be used at this point as it would create a circular reference during
// the table initialization.
//
// We expect it to be a URI table with `o_serialized` containing the
// type string
$row = $this->connection->selectRow(
$this->typeTableName,
[
'o_serialized'
],
[
's_id' => $row->smw_id
],
__METHOD__
);
if ( $row === false ) {
return $GLOBALS['smwgPDefaultType'];
}
// e.g. http://semantic-mediawiki.org/swivt/1.0#_num
list( $url, $fragment ) = explode( "#", $row->o_serialized );
return $fragment;
}
}
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