Use csv_transformed for csv serialization with engine to leverage c…

…orrect handling of enums and timestamps in results (#2874)

.changeset/eight-foxes-bathe.md

@@ -0,0 +1,6 @@
+---
+'@finos/legend-graph': patch
+---
+
+
+Use `csv_transformed` for csv serialization with engine to leverage correct handling of enums and timestamps in results.

packages/legend-graph/src/graph-manager/protocol/pure/v1/engine/V1_EngineServerClient.ts

@@ -43,7 +43,7 @@ import type { V1_LightQuery, V1_Query } from './query/V1_Query.js';
 import type { V1_ServiceStorage } from './service/V1_ServiceStorage.js';
 import type { GenerationMode } from '../../../../../graph-manager/action/generation/GenerationConfigurationDescription.js';
 import type { V1_QuerySearchSpecification } from './query/V1_QuerySearchSpecification.js';
-import type { EXECUTION_SERIALIZATION_FORMAT } from '../../../../../graph-manager/action/execution/ExecutionResult.js';
+import { EXECUTION_SERIALIZATION_FORMAT } from '../../../../../graph-manager/action/execution/ExecutionResult.js';
 import type { V1_ExternalFormatDescription } from './externalFormat/V1_ExternalFormatDescription.js';
 import type { V1_ExternalFormatModelGenerationInput } from './externalFormat/V1_ExternalFormatModelGeneration.js';
 import type { V1_GenerateSchemaInput } from './externalFormat/V1_GenerateSchemaInput.js';
@@ -141,6 +141,21 @@ export type V1_GrammarParserBatchInputEntry = {
     | undefined;
 };
 
+enum ENGINE_EXECUTION_SERIALIZATION_FORMAT {
+  CSV_TRANSFORMED = 'csv_transformed',
+}
+
+const getEngineSerializationFormat = (
+  val: EXECUTION_SERIALIZATION_FORMAT,
+): ENGINE_EXECUTION_SERIALIZATION_FORMAT | string => {
+  switch (val) {
+    case EXECUTION_SERIALIZATION_FORMAT.CSV:
+      return ENGINE_EXECUTION_SERIALIZATION_FORMAT.CSV_TRANSFORMED;
+    default:
+      return val;
+  }
+};
+
 export class V1_EngineServerClient extends AbstractServerClient {
   currentUserId?: string | undefined;
   private env?: string | undefined;
@@ -603,7 +618,9 @@ export class V1_EngineServerClient extends AbstractServerClient {
       {},
       undefined,
       {
-        serializationFormat: options?.serializationFormat,
+        serializationFormat: options?.serializationFormat
+          ? getEngineSerializationFormat(options.serializationFormat)
+          : undefined,
       },
       { enableCompression: true },
       { skipProcessing: Boolean(options?.returnResultAsText) },