vchunikhin commented on code in PR #22967:
URL: https://github.com/apache/beam/pull/22967#discussion_r960791916
##########
learning/tour-of-beam/backend/internal/storage/datastore.go:
##########
@@ -227,5 +227,34 @@ func (d *DatastoreDb) SaveContentTrees(ctx
context.Context, trees []tob.ContentT
return nil
}
+// Get learning unit content by unitId
+func (d *DatastoreDb) GetUnitContent(ctx context.Context, sdk tob.Sdk, unitId
string) (unit *tob.Unit, err error) {
+ var tbNodes []TbLearningNode
+ rootKey := pgNameKey(TbLearningPathKind, sdkToKey(sdk), nil)
+
+ query := datastore.NewQuery(TbLearningNodeKind).
+ Namespace(PgNamespace).
+ Ancestor(rootKey).
+ FilterField("id", "=", unitId)
+
+ _, err = d.Client.GetAll(ctx, query, &tbNodes)
+ if err != nil {
+ return nil, fmt.Errorf("query unit failed: %w", err)
+ }
+
+ switch {
+ case len(tbNodes) == 0:
+ return nil, nil
Review Comment:
Ok, make sense, lgtm
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