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<?php
/**
* WPSEO plugin file.
*
* @package WPSEO\Admin\Links
*/
/**
* Represents the storage of an seo link.
*/
class WPSEO_Link_Storage implements WPSEO_Installable {
/**
* Table name for the link storage.
*
* @var string
*/
const TABLE_NAME = 'yoast_seo_links';
/**
* An instance of the database proxy class.
*
* @var WPSEO_Database_Proxy
*/
protected $database_proxy;
/**
* Holds the prefix of the database table.
*
* @deprecated 7.4
*
* @var null|string
*/
protected $table_prefix;
/**
* Initializes the database table.
*
* @param string $table_prefix Optional. Deprecated argument.
*/
public function __construct( $table_prefix = null ) {
if ( $table_prefix !== null ) {
_deprecated_argument( __METHOD__, 'WPSEO 7.4' );
}
$this->database_proxy = new WPSEO_Database_Proxy( $GLOBALS['wpdb'], self::TABLE_NAME, true );
}
/**
* Returns the table name to use.
*
* @return string The table name.
*/
public function get_table_name() {
return $this->database_proxy->get_table_name();
}
/**
* Creates the database table.
*
* @return boolean True if the table was created, false if something went wrong.
*/
public function install() {
return $this->database_proxy->create_table(
[
'id bigint(20) unsigned NOT NULL AUTO_INCREMENT',
'url varchar(255) NOT NULL',
'post_id bigint(20) unsigned NOT NULL',
'target_post_id bigint(20) unsigned NOT NULL',
'type VARCHAR(8) NOT NULL',
],
[
'PRIMARY KEY (id)',
'KEY link_direction (post_id, type)',
]
);
}
/**
* Returns an array of links from the database.
*
* @param int $post_id The post to get the links for.
*
* @return WPSEO_Link[] The links connected to the post.
*/
public function get_links( $post_id ) {
global $wpdb;
$results = $this->database_proxy->get_results(
$wpdb->prepare(
'
SELECT url, post_id, target_post_id, type
FROM ' . $this->get_table_name() . '
WHERE post_id = %d',
$post_id
)
);
if ( $this->database_proxy->has_error() ) {
WPSEO_Link_Table_Accessible::set_inaccessible();
}
$links = [];
foreach ( $results as $link ) {
$links[] = WPSEO_Link_Factory::get_link( $link->url, $link->target_post_id, $link->type );
}
return $links;
}
/**
* Walks the given links to save them.
*
* @param integer $post_id The post id to save.
* @param WPSEO_Link[] $links The link to save.
*
* @return void
*/
public function save_links( $post_id, array $links ) {
array_walk( $links, [ $this, 'save_link' ], $post_id );
}
/**
* Removes all records for given post_id.
*
* @param int $post_id The post_id to remove the records for.
*
* @return int|false The number of rows updated, or false on error.
*/
public function cleanup( $post_id ) {
$is_deleted = $this->database_proxy->delete(
[ 'post_id' => $post_id ],
[ '%d' ]
);
if ( $is_deleted === false ) {
WPSEO_Link_Table_Accessible::set_inaccessible();
}
return $is_deleted;
}
/**
* Inserts the link into the database.
*
* @param WPSEO_Link $link The link to save.
* @param int $link_key The link key. Unused.
* @param int $post_id The post id to save the link for.
*
* @return void
*/
protected function save_link( WPSEO_Link $link, $link_key, $post_id ) {
$inserted = $this->database_proxy->insert(
[
'url' => $link->get_url(),
'post_id' => $post_id,
'target_post_id' => $link->get_target_post_id(),
'type' => $link->get_type(),
],
[ '%s', '%d', '%d', '%s' ]
);
if ( $inserted === false ) {
WPSEO_Link_Table_Accessible::set_inaccessible();
}
}
}