/**
* Apply the added and replacement parts to the parts of the base query.
*
* @return array
*/
public function getParts()
{
if (!isset($this->cachedParts)) {
$parts = $this->getBaseParts();
if (empty($this->partsAdd) && empty($this->partsReplace)) {
return $parts;
}
if (!empty($this->partsReplace)) {
$parts = array_merge($parts, $this->partsReplace);
}
if (!empty($this->partsAdd)) {
$parts = QuerySplitter::addParts($parts, $this->partsAdd);
}
if (key($parts) == 'select' && empty($parts['columns'])) {
$parts['columns'] = '*';
}
if (isset($parts['on duplicate key update']) && trim($parts['on duplicate key update']) === '1') {
$columns = QuerySplitter::splitColumns($parts);
foreach ($columns as &$column) {
$column = "{$column} = VALUES({$column})";
}
$parts['on duplicate key update'] = join(', ', $columns);
}
$this->cachedParts =& $parts;
}
return empty($this->subqueries) ? $this->cachedParts : QuerySplitter::injectSubsets(array($this->cachedParts) + $this->subqueries);
}