/**
* @param \pq\Gateway\Table $table
* @param \pq\Gateway\Row $row
* @param string $event create/update/delete
* @param array $where reference to the criteria
*/
function update(\SplSubject $table, Row $row = null, $event = null, array &$where = null)
{
if ($event === "update") {
$where["{$this->column}="] = $row->getData()[$this->column];
$row->{$this->column}->mod(+1);
}
}
/**
* @param \pq\Gateway\Table $table
* @param \pq\Gateway\Row $row
* @param string $event create/update/delete
* @param array $where reference to the criteria
* @throws \UnexpectedValueException if the row has already been modified
*/
function update(\SplSubject $table, Row $row = null, $event = null, array &$where = null)
{
if ($event === "update") {
if (1 != count($rowset = $table->find($where, null, 0, 0, "update nowait"))) {
throw new \UnexpectedValueException("Failed to select a single row");
}
if ($rowset->current()->getData() != $row->getData()) {
throw new \UnexpectedValueException("Row has already been modified");
}
}
}
