/**
* Magic function to convert the query to a string.
*
* @return string The completed query.
*
* @since 11.1
*/
public function __toString()
{
$query = '';
switch ($this->type) {
case 'insert':
$query .= (string) $this->insert;
// Set method
if ($this->set) {
$query .= (string) $this->set;
} elseif ($this->values) {
if ($this->columns) {
$query .= (string) $this->columns;
}
$elements = $this->insert->getElements();
$tableName = array_shift($elements);
$query .= 'VALUES ';
$query .= (string) $this->values;
if ($this->autoIncrementField) {
$query = 'SET IDENTITY_INSERT ' . $tableName . ' ON;' . $query . 'SET IDENTITY_INSERT ' . $tableName . ' OFF;';
}
if ($this->where) {
$query .= (string) $this->where;
}
}
break;
default:
$query = parent::__toString();
break;
}
return $query;
}
/**
* Clear data from the query or a specific clause of the query.
*
* @param string $clause Optionally, the name of the clause to clear, or nothing to clear the whole query.
*
* @return void
*
* @since 11.3
*/
public function clear($clause = null)
{
switch ($clause) {
case 'limit':
$this->limit = null;
break;
case 'offset':
$this->offset = null;
break;
case 'forUpdate':
$this->forUpdate = null;
break;
case 'forShare':
$this->forShare = null;
break;
case 'noWait':
$this->noWait = null;
break;
case 'returning':
$this->returning = null;
break;
case 'select':
case 'update':
case 'delete':
case 'insert':
case 'from':
case 'join':
case 'set':
case 'where':
case 'group':
case 'having':
case 'order':
case 'columns':
case 'values':
parent::clear($clause);
break;
default:
$this->type = null;
$this->limit = null;
$this->offset = null;
$this->forUpdate = null;
$this->forShare = null;
$this->noWait = null;
$this->returning = null;
parent::clear($clause);
break;
}
return $this;
}
/**
* Method to append the primary keys for this table to a query.
*
* @param Query $query A query object to append.
* @param mixed $pk Optional primary key parameter.
*
* @return void
*
* @since 12.3
*/
public function appendPrimaryKeys($query, $pk = null)
{
if (is_null($pk)) {
foreach ($this->_tbl_keys as $k) {
$query->where($this->_db->quoteName($k) . ' = ' . $this->_db->quote($this->{$k}));
}
} else {
if (is_string($pk)) {
$pk = array($this->_tbl_key => $pk);
}
$pk = (object) $pk;
foreach ($this->_tbl_keys as $k) {
$query->where($this->_db->quoteName($k) . ' = ' . $this->_db->quote($pk->{$k}));
}
}
}