fix(transfer): support gbase jdbc connections

apps/desktop/src/composables/__tests__/useDatabaseOptions.spec.ts

@@ -135,6 +135,22 @@ describe("namespace options", () => {
     ).toEqual(["analytics"]);
   });
 
+  it("falls back to the configured database when JDBC metadata returns no databases", () => {
+    expect(
+      databaseOptionsForConnection([], {
+        db_type: "jdbc",
+        database: "gbase_demo",
+      }),
+    ).toEqual(["gbase_demo"]);
+
+    expect(
+      databaseOptionsForConnection([], {
+        db_type: "jdbc",
+        database_info: { currentDatabase: "gbase_from_metadata" },
+      }),
+    ).toEqual(["gbase_from_metadata"]);
+  });
+
   it("preserves visible database filtering for catalog-scoped transfer options", async () => {
     mocks.listDorisCatalogDatabases.mockResolvedValue([{ name: "app" }, { name: "analytics" }]);
 

apps/desktop/src/composables/useDatabaseOptions.ts

@@ -7,7 +7,7 @@ import { isInternalDorisCatalog } from "@/lib/database/databaseFeatureSupport";
 import type { CatalogInfo, ConnectionConfig } from "@/types/database";
 import * as api from "@/lib/backend/api";
 
-type NamespaceOptionsConnection = Pick<ConnectionConfig, "database" | "db_type" | "driver_profile" | "visible_databases" | "visible_schemas">;
+type NamespaceOptionsConnection = Pick<ConnectionConfig, "database" | "db_type" | "driver_profile" | "visible_databases" | "visible_schemas"> & Partial<Pick<ConnectionConfig, "database_info">>;
 export function catalogDatabaseOptionsKey(connectionId: string, catalog: string): string {
   return `${connectionId}:${catalog}`;
 }
@@ -31,8 +31,10 @@ export function databaseAfterCatalogChange(currentDatabase: string, databaseOpti
   return databaseOptions.includes(currentDatabase) ? currentDatabase : "";
 }
 
-export function databaseOptionsForConnection(databaseNames: string[], connection: Pick<ConnectionConfig, "db_type" | "visible_databases"> | undefined): string[] {
+export function databaseOptionsForConnection(databaseNames: string[], connection: (Pick<ConnectionConfig, "db_type" | "visible_databases"> & Partial<Pick<ConnectionConfig, "database" | "database_info">>) | undefined): string[] {
   const names = filterDatabaseNamesForConnection(databaseNames, connection);
+  const configuredDatabase = connection?.database?.trim() || connection?.database_info?.currentDatabase?.trim();
+  if (names.length === 0 && configuredDatabase) return [configuredDatabase];
   if (names.length === 0 && usesTreeSchemaMode(connection?.db_type)) return [""];
   return names;
 }