/**
* Builds a sql query with the specified connection
*
* @param SQLExpression $query The expression object to build from
* @param array $parameters Out parameter for the resulting query parameters
* @return string The resulting SQL as a string
*/
public function buildSQL(SQLExpression $query, &$parameters)
{
$sql = null;
$parameters = array();
// Ignore null queries
if ($query->isEmpty()) {
return null;
}
if ($query instanceof SQLSelect) {
$sql = $this->buildSelectQuery($query, $parameters);
} elseif ($query instanceof SQLDelete) {
$sql = $this->buildDeleteQuery($query, $parameters);
} elseif ($query instanceof SQLInsert) {
$sql = $this->buildInsertQuery($query, $parameters);
} elseif ($query instanceof SQLUpdate) {
$sql = $this->buildUpdateQuery($query, $parameters);
} else {
user_error("Not implemented: query generation for type " . $query->getType());
}
return $sql;
}
/**
* Builds a sql query with the specified connection
*
* @param SQLExpression $query The expression object to build from
* @param array $parameters Out parameter for the resulting query parameters
* @return string The resulting SQL as a string
*/
public function buildSQL(SQLExpression $query, &$parameters)
{
$sql = null;
$parameters = array();
// Ignore null queries
if ($query->isEmpty()) {
return null;
}
if ($query instanceof SQLSelect) {
$sql = $this->buildSelectQuery($query, $parameters);
} elseif ($query instanceof SQLDelete) {
$sql = $this->buildDeleteQuery($query, $parameters);
} elseif ($query instanceof SQLInsert) {
$sql = $this->buildInsertQuery($query, $parameters);
} elseif ($query instanceof SQLUpdate) {
$sql = $this->buildUpdateQuery($query, $parameters);
} else {
throw new InvalidArgumentException("Not implemented: query generation for type " . get_class($query));
}
return $sql;
}