/**
* Magic function to convert the query to a string, only for PostgreSQL specific queries
*
* @return string The completed query.
*
* @since 2.0
*/
public function toString()
{
$query = '';
switch ($this->type) {
case 'select':
$query .= (string) $this->select;
$query .= (string) $this->from;
if ($this->join) {
// Special case for joins
foreach ($this->join as $join) {
$query .= (string) $join;
}
}
if ($this->where) {
$query .= (string) $this->where;
}
if ($this->group) {
$query .= (string) $this->group;
}
if ($this->having) {
$query .= (string) $this->having;
}
if ($this->order) {
$query .= (string) $this->order;
}
if ($this->forUpdate) {
$query .= (string) $this->forUpdate;
} else {
if ($this->forShare) {
$query .= (string) $this->forShare;
}
}
if ($this->noWait) {
$query .= (string) $this->noWait;
}
break;
case 'update':
$query .= (string) $this->update;
$query .= (string) $this->set;
if ($this->join) {
$onWord = ' ON ';
// Workaround for special case of JOIN with UPDATE
foreach ($this->join as $join) {
$joinElem = $join->getElements();
$joinArray = explode($onWord, $joinElem[0]);
$this->from($joinArray[0]);
$this->where($joinArray[1]);
}
$query .= (string) $this->from;
}
if ($this->where) {
$query .= (string) $this->where;
}
break;
case 'insert':
$query .= (string) $this->insert;
if ($this->values) {
if ($this->columns) {
$query .= (string) $this->columns;
}
$elements = $this->values->getElements();
if (!$elements[0] instanceof $this) {
$query .= ' VALUES ';
}
$query .= (string) $this->values;
if ($this->returning) {
$query .= (string) $this->returning;
}
}
break;
default:
$query = parent::toString();
break;
}
$query = $this->processLimit($query, $this->limit, $this->offset);
return $query;
}
