Feat: don't execute prepareIdValue if ignoreKeys is true #1038 (#1039)

Author: uc4w6c

doma-core/src/main/java/org/seasar/doma/jdbc/query/AutoBatchInsertQuery.java

@@ -89,9 +89,13 @@ protected void prepareIdAndVersionPropertyTypes() {
     generatedIdPropertyType = entityType.getGeneratedIdPropertyType();
     if (generatedIdPropertyType != null) {
       if (idGenerationConfig == null) {
-        idGenerationConfig =
-            new IdGenerationConfig(
-                config, entityType, new ReservedIdProvider(config, entityType, entities.size()));
+        if (generatedKeysIgnored) {
+          idGenerationConfig = new IdGenerationConfig(config, entityType);
+        } else {
+          idGenerationConfig =
+              new IdGenerationConfig(
+                  config, entityType, new ReservedIdProvider(config, entityType, entities.size()));
+        }
         generatedIdPropertyType.validateGenerationStrategy(idGenerationConfig);
         autoGeneratedKeysSupported =
             !generatedKeysIgnored