func (m *JobExecutor) WalkSource(p *plan.Source) (Task, error) {
//u.Debugf("%p NewSource? %p", m, p)
if len(p.Static) > 0 {
//u.Warnf("found static source")
static := membtree.NewStaticData("static")
static.SetColumns(p.Cols)
_, err := static.Put(nil, nil, p.Static)
if err != nil {
u.Errorf("Could not put %v", err)
}
return NewSourceScanner(m.Ctx, p, static), nil
} else if p.Conn == nil {
u.Warnf("no conn? %T", p.DataSource)
if p.DataSource == nil {
u.Warnf("no datasource")
return nil, fmt.Errorf("missing data source")
}
source, err := p.DataSource.Open(p.Stmt.SourceName())
if err != nil {
return nil, err
}
p.Conn = source
//u.Debugf("setting p.Conn %p %T", p.Conn, p.Conn)
}
e, hasSourceExec := p.Conn.(ExecutorSource)
if hasSourceExec {
return e.WalkExecSource(p)
}
return NewSource(m.Ctx, p)
}
func (m *JobExecutor) WalkSourceExec(p *plan.Source) (Task, error) {
if p.Conn == nil {
if p.DataSource == nil {
u.Warnf("no datasource")
return nil, fmt.Errorf("missing data source")
}
source, err := p.DataSource.Open(p.Stmt.SourceName())
if err != nil {
return nil, err
}
p.Conn = source
//u.Debugf("setting p.Conn %p %T", p.Conn, p.Conn)
}
e, hasSourceExec := p.Conn.(ExecutorSource)
if hasSourceExec {
return e.WalkExecSource(p)
}
u.Warnf("source %T does not implement datasource.Scanner", p.Conn)
return nil, fmt.Errorf("%T Must Implement Scanner for %q", p.Conn, p.Stmt.String())
}