/** This is our pseudo-__construct, called whenever our public functions are called. */
private static function checkDatabase()
{
// Have we already run?
if (self::$checked != false) {
return;
}
if (!isset(self::$db)) {
self::$db = FreePBX::create()->Database;
}
// Definitions
$create = "CREATE TABLE IF NOT EXISTS " . self::$dbname . " ( `module` CHAR(64) NOT NULL, `key` CHAR(255) NOT NULL, `val` LONGBLOB, `type` CHAR(16) DEFAULT NULL, `id` CHAR(255) DEFAULT NULL)";
// These are limited to 50 chars as prefixes are limited to 255 chars in total (or 1000 in later versions
// of mysql), and UTF can cause that to overflow. 50 is plenty.
$index['index1'] = "ALTER TABLE " . self::$dbname . " ADD INDEX index1 (`key`(50))";
$index['index3'] = "ALTER TABLE " . self::$dbname . " ADD UNIQUE INDEX index3 (`module`, `key`(50), `id`(50))";
$index['index5'] = "ALTER TABLE " . self::$dbname . " ADD INDEX index5 (`module`, `id`(50))";
// Check to make sure our Key/Value table exists.
try {
$res = self::$db->query("SELECT * FROM `" . self::$dbname . "` LIMIT 1");
} catch (Exception $e) {
if ($e->getCode() == "42S02") {
// Table does not exist
self::$db->query($create);
} else {
self::checkException($e);
}
}
// Check for indexes.
// TODO: This only works on MySQL
$res = self::$db->query("SHOW INDEX FROM `" . self::$dbname . "`");
$out = $res->fetchAll(PDO::FETCH_COLUMN | PDO::FETCH_GROUP, 2);
foreach ($out as $i => $null) {
// Do we not know about this index? (Are we upgrading?)
if (!isset($index[$i])) {
self::$db->query("ALTER TABLE " . self::$dbname . " DROP INDEX {$i}");
}
}
// Now lets make sure all our indexes exist.
foreach ($index as $i => $sql) {
if (!isset($out[$i])) {
self::$db->query($sql);
}
}
// Add our stored procedures
self::$dbGet = self::$db->prepare("SELECT `val`, `type` FROM `" . self::$dbname . "` WHERE `module` = :mod AND `key` = :key AND `id` = :id");
self::$dbGetAll = self::$db->prepare("SELECT `key` FROM `" . self::$dbname . "` WHERE `module` = :mod AND `id` = :id ORDER BY `key`");
self::$dbDel = self::$db->prepare("DELETE FROM `" . self::$dbname . "` WHERE `module` = :mod AND `key` = :key AND `id` = :id");
self::$dbAdd = self::$db->prepare("INSERT INTO `" . self::$dbname . "` ( `module`, `key`, `val`, `type`, `id` ) VALUES ( :mod, :key, :val, :type, :id )");
self::$dbDelId = self::$db->prepare("DELETE FROM `" . self::$dbname . "` WHERE `module` = :mod AND `id` = :id");
self::$dbDelMod = self::$db->prepare("DELETE FROM `" . self::$dbname . "` WHERE `module` = :mod");
// Now this has run, everything IS JUST FINE.
self::$checked = true;
}