// NewFilter returns a Filter for use with a push of key-value pairs.
func (d *Data) NewFilter(fs storage.FilterSpec) (storage.Filter, error) {
roiIterator, _, found, err := roi.NewIteratorBySpec(fs, d)
if err != nil {
dvid.Debugf("No filter found that was parsable: %s\n", fs)
return nil, err
}
if !found || roiIterator == nil {
dvid.Debugf("No ROI found so using generic data push for data %q.\n", d.DataName())
return nil, nil
}
return &Filter{d, fs, roiIterator}, nil
}
// NewFilter returns a Filter for use with a push of key-value pairs.
func (d *Data) NewFilter(fs storage.FilterSpec) (storage.Filter, error) {
filter := &Filter{Data: d, fs: fs}
// Get associated labelblk. If none, we can't use roi filter so just do standard data send.
lblk, err := d.GetSyncedLabelblk()
if err != nil {
dvid.Infof("Unable to get synced labelblk for labelvol %q. Unable to do any ROI-based filtering.\n", d.DataName())
return nil, nil
}
roiIterator, _, found, err := roi.NewIteratorBySpec(fs, lblk)
if err != nil {
return nil, err
}
if !found || roiIterator == nil {
dvid.Debugf("No ROI found so using generic data push for data %q.\n", d.DataName())
return nil, nil
}
filter.it = roiIterator
return filter, nil
}