/**
* Prepares the specified statement if the $queries entry is not already a statement instance
* @param string $name Name of the statement to prepare
* @return bool
*/
function prepareStatement($name, $params = array())
{
static $patterns = null;
if (!@$this->queries[$name]) {
trigger_error("Cannot execute unknown/invalid query {$name}", E_USER_WARNING);
return false;
}
if (!is_object($this->queries[$name])) {
if (!isset($patterns)) {
$patterns = array();
// Replace the real table names with their prefixed equivalent
foreach ($this->tables as $k => $v) {
$patterns[] = '{' . $k . '}';
}
}
$this->queries[$name] = $this->db->prepare(str_replace($patterns, $this->tables, $this->queries[$name]));
}
if (!empty($params)) {
if (isset($this->parameters[$name])) {
foreach ($params as $k => $v) {
$this->queries[$name]->bindValue(is_int($k) ? $k + 1 : $k, $v, $this->parameters[$name][$k]);
}
} else {
foreach ($params as $k => $v) {
$this->queries[$name]->bindValue(is_int($k) ? $k + 1 : $k, $v);
}
}
}
return true;
}
/**
* Cast a variable according to a PDO_PARAM_* type
*
* @param mixed $val The variable whom type must be set
* @param int $type A PDO_PARAM_* data type
* @return mixed
* @access protected
*/
function castValue($val, $type = PDO_PARAM_INT)
{
switch ($type) {
case PDO_PARAM_BOOL:
return $val ? 1 : 0;
case PDO_PARAM_STR:
return $this->db->quote($val);
case PDO_PARAM_INT:
default:
return intval($val);
}
}