/**
* Quotes primitive value with its primitve variable (alias.var)
* @param mixed $v
* @param string $pvar
* @return true|string (error message if string)
*/
private function _qq(&$v, &$pvar)
{
// unquote pvar
$pvar_ = $this->uq($pvar);
// split primitive var to alias and var
list($alias, $var) = explode('.', $pvar_);
if (!$alias || !$var) {
return "Invalid primitive variable [{$pvar}]";
}
// get the class for alias
if (!($class = $this->aliases[$alias])) {
return "No class found for alias [{$alias}]";
}
// get class map
if (!($cm = $this->em->getClassMap($class))) {
return "No class map for [{$class}]";
}
// is var 'oid'?
if ($var == 'oid') {
// replace var name with column name
$pvar = $this->qid($alias) . '.' . $this->qid($cm->getOidColumn());
} else {
// get field map (for non-oid field)
if (!($fm = $cm->getField($var))) {
return "No field map for [{$class}::{$var}]";
}
// replace var name with column name
$pvar = $this->qid($alias) . '.' . $this->qid($fm->getColumnName());
// quote value
$v = $this->q($v, $fm);
}
return true;
}
/**
* Makes a cache key for a class
*
* Since EZPDO allows a user to change database (DSN) at runtime (see
* {@link epManager::setDsn()}), it is important to use the current
* DSN of the class in generating the cache key.
*
* @param string $class The class name
* @param string $extra The extra string (mostly for locking type)
* @return false|string
*/
protected function _key($class, $extra = '')
{
if (!($cm =& self::$em->getClassMap($class))) {
return false;
}
if (!($dsn = $cm->getDsn())) {
return false;
}
return md5($dsn . $class . $extra);
}
/**
* Prepare database if not exists
* @param string $class
* @param string $rtable (relationship table, only used if class is epObjectRelation)
* @return boolean
*/
public function prepareDb($class, $rtable = false)
{
// if relation table is given, set it to runtime manager
if ($rtable) {
self::$em->setRelationTable($rtable);
}
// get class map for class
if (!($cm = self::$em->getClassMap($class))) {
return false;
}
// no table for abstract class
if ($cm->isAbstract()) {
return true;
}
return self::$db->create($cm);
}