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added MongoStatement class, modified DbDriver hierarchy

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This commit is contained in:
Anton Grebnev
2011-11-15 16:55:12 +04:00
parent 229a39d682
commit 5bff74f20b
8 changed files with 288 additions and 130 deletions
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79
model/DbStatement.php
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@ -20,38 +20,16 @@ abstract class DbStatement
/**
* @var string
*/
protected $sql;
protected $map = null;
protected $request;
protected $params = array();
protected $result;
public function __construct($driver, $sql)
public function __construct($driver, $request)
{
$this->driver = $driver;
$this->sql = $sql;
}
public function bindParam($param, &$value)
{
if ($this->map === null) {
$this->mapPlaceholders();
}
if (count($this->map) > 0) {
if (!is_string($param) && !is_int($param)) {
throw new Exception('Placeholder must be an array or string');
}
if (is_object($value) && ! ($value instanceof DbExpr)) {
throw new Exception('Objects excepts DbExpr not allowed.');
}
if (isset($this->map[$param])) {
$this->params[$param] = &$value;
return true;
}
}
return false;
$this->driver = $driver;
$this->request = $request;
}
/**
@ -67,48 +45,7 @@ abstract class DbStatement
}
return $this->driverExecute($this->assemble());
}
protected function mapPlaceholders()
{
$matches = array();
if(preg_match_all('/(\?|:[A-z0-9_]+)/u', $this->sql, $matches, PREG_OFFSET_CAPTURE)) {
$noname = 0;
foreach ($matches[0] as $id=>$match) {
$match[2] = $matches[1][$id][0];
$name = ($match[2][0] === ':') ? ltrim($match[2], ':') : $noname++;
$this->map[$name]['placeholder'] = $match[0];
$this->map[$name]['offset'][] = $match[1];
}
}
}
protected function assemble()
{
if (empty($this->map)) {
return $this->sql;
}
$query = $this->sql;
$placeholders = array();
foreach($this->map as $name => $place) {
$value = $this->driver->quote($this->params[$name]);
foreach ($place['offset'] as $offset) {
$placeholders[$offset] = array('placeholder' => $place['placeholder'], 'value' => $value);
}
}
ksort($placeholders);
$increment = 0;
foreach($placeholders as $current_offset => $placeholder) {
$offset = $current_offset + $increment;
$length = mb_strlen($placeholder['placeholder']);
$query = mb_substr($query, 0, $offset) . $placeholder['value'] . mb_substr($query, $offset + $length);
$increment = (($increment - $length) + mb_strlen($placeholder['value']));
}
return $query;
}
public function __destruct()
{
$this->close();
@ -164,6 +101,10 @@ abstract class DbStatement
}
/* Abstract methods */
abstract public function bindParam($param, &$value);
abstract protected function assemble();
abstract public function fetch($style = Db::FETCH_OBJ);
@ -181,5 +122,5 @@ abstract class DbStatement
/**
* @return bool
*/
abstract protected function driverExecute($sql);
abstract protected function driverExecute($request);
}