dimas-b commented on code in PR #4091:
URL: https://github.com/apache/polaris/pull/4091#discussion_r3024701574
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runtime/service/src/main/java/org/apache/polaris/service/catalog/iceberg/IcebergCatalogHandler.java:
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@@ -302,6 +291,23 @@ public ListNamespacesResponse listNamespaces(Namespace
parent) {
return catalogHandlerUtils().listNamespaces(namespaceCatalog, parent);
}
+ public ListNamespacesResponse listNamespaces(
+ Namespace parent, String pageToken, Integer pageSize) {
+ PolarisAuthorizableOperation op =
PolarisAuthorizableOperation.LIST_NAMESPACES;
+ authorizeBasicNamespaceOperationOrThrow(op, parent);
+
+ if (isFederated) {
+ return catalogHandlerUtils().listNamespaces(namespaceCatalog, parent,
pageToken, pageSize);
+ } else {
+ PageToken pageRequest = PageToken.build(pageToken, pageSize,
this::shouldDecodeToken);
+ var results = ((IcebergCatalog) baseCatalog).listNamespaces(parent,
pageRequest);
Review Comment:
That assumption is in the new code - it checks the `isFedeated` flag, and
performs an unchecked (no `instanceof`) cast here. This means the code assumes
that `baseCatalog` is of type `IcebergCatalog` if `isFedeated == false`, which
is based purely on `ConnectionConfigInfoDpo` and it is not clear how
`ConnectionConfigInfoDpo` affects the type of `baseCatalog`.
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