Example #1
0
func Build(stmt algebra.Statement, datastore, systemstore datastore.Datastore,
	namespace string, subquery bool) (Operator, error) {
	builder := newBuilder(datastore, systemstore, namespace, subquery)
	o, err := stmt.Accept(builder)

	if err != nil {
		return nil, err
	}

	op := o.(Operator)
	_, is_prepared := o.(*Prepared)

	if !subquery && !is_prepared {
		privs, er := stmt.Privileges()
		if er != nil {
			return nil, er
		}

		if len(privs) > 0 {
			op = NewAuthorize(privs, op)
		}

		return NewSequence(op, NewStream()), nil
	} else {
		return op, nil
	}
}
Example #2
0
func BuildPrepared(stmt algebra.Statement, datastore, systemstore datastore.Datastore,
	namespace string, subquery bool) (*Prepared, error) {
	operator, err := Build(stmt, datastore, systemstore, namespace, subquery)
	if err != nil {
		return nil, err
	}

	signature := stmt.Signature()
	return newPrepared(operator, signature), nil
}