raminqaf commented on code in PR #28287:
URL: https://github.com/apache/flink/pull/28287#discussion_r3412602715
##########
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/operations/converters/materializedtable/SqlCreateOrAlterMaterializedTableConverter.java:
##########
@@ -78,23 +81,29 @@ private Operation handleCreateOrAlter(
final ObjectIdentifier identifier) {
final Optional<ResolvedCatalogBaseTable<?>> resolvedBaseTable =
context.getCatalogManager().getCatalogBaseTable(identifier);
- return resolvedBaseTable
- .map(
- oldBaseTable -> {
- if (oldBaseTable.getTableKind() !=
TableKind.MATERIALIZED_TABLE) {
- throw new ValidationException(
- String.format(
- "Table %s is not a
materialized table. Only materialized table support create or alter operation.",
- identifier.asSummaryString()));
- }
- return handleAlter(
- sqlCreateOrAlterMaterializedTable,
- (ResolvedCatalogMaterializedTable)
oldBaseTable,
- context,
- identifier);
- })
- .orElseGet(
- () -> handleCreate(sqlCreateOrAlterMaterializedTable,
context, identifier));
+ if (resolvedBaseTable.isEmpty()) {
+ return handleCreate(sqlCreateOrAlterMaterializedTable, context,
identifier);
+ }
+ final ResolvedCatalogBaseTable<?> oldBaseTable =
resolvedBaseTable.get();
+ switch (oldBaseTable.getTableKind()) {
+ case MATERIALIZED_TABLE:
+ return handleAlter(
+ sqlCreateOrAlterMaterializedTable,
+ (ResolvedCatalogMaterializedTable) oldBaseTable,
+ context,
+ identifier);
+ case TABLE:
+ return handleConvert(
+ sqlCreateOrAlterMaterializedTable,
+ context,
+ identifier,
+ (ResolvedCatalogTable) oldBaseTable);
+ default:
+ throw new ValidationException(
+ String.format(
+ "Table %s is not a materialized table. Only
materialized table support create or alter operation.",
+ identifier.asSummaryString()));
Review Comment:
Message is adapted and improved
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