Questions about Get method of blob controller

[pendoragon]

I was looking at harbor code and get a bit confused by the code below:

harbor/src/controller/blob/controller.go

Lines 228 to 247 in 27e06ac

	keywords := make(map[string]interface{})
	if digest != "" {
	ol := q.OrList{
	Values: []interface{}{
	digest,
	},
	}
	keywords["digest"] = &ol
	}
	if opts.ProjectID != 0 {
	keywords["projectID"] = opts.ProjectID
	}
	if opts.ArtifactDigest != "" {
	keywords["artifactDigest"] = opts.ArtifactDigest
	}
	query := &q.Query{
	Keywords: keywords,
	}
	blobs, err := c.blobMgr.List(ctx, query)

The Get method supports options like ArtifactDigest and ProjectID. These options gets converted to query keywords.
Under the hood, it calls List method of blob manager, which just queries table blob of the database

harbor/src/pkg/blob/dao/dao.go

Lines 227 to 237 in 27e06ac

	func (d *dao) ListBlobs(ctx context.Context, query *q.Query) ([]*models.Blob, error) {
	qs, err := orm.QuerySetter(ctx, &models.Blob{}, query)
	if err != nil {
	return nil, err
	}
	blobs := []*models.Blob{}
	if _, err = qs.All(&blobs); err != nil {
	return nil, err
	}
	return blobs, nil
	}

However, the blob table has no projectID or artifactDigest column. Am i missing something?