[GitHub] [flink] deadwind4 commented on a diff in pull request #19823: [FLINK-27766][sql-gateway] Introduce the framework of the SqlGatewayService

[GitBox <gi...@apache.org>]

deadwind4 commented on code in PR #19823:
URL: https://github.com/apache/flink/pull/19823#discussion_r886622379


##########
flink-table/flink-sql-gateway/src/main/java/org/apache/flink/table/gateway/service/utils/SqlExecutionException.java:
##########
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.table.gateway.service.utils;
+
+/** Exception thrown during the execution. */

Review Comment:
   ```suggestion
   /** Exception thrown during the execution of SQL statements. */
   ```



##########
flink-table/flink-sql-gateway-common/src/main/java/org/apache/flink/table/gateway/common/operation/OperationType.java:
##########
@@ -0,0 +1,29 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.table.gateway.common.operation;
+
+import org.apache.flink.annotation.PublicEvolving;
+
+/** The Operation Type. */
+@PublicEvolving
+public enum OperationType {
+    EXECUTE_STATEMENT,
+
+    UNKNOWN;
+}

Review Comment:
   Should we add comments to explain what effect of EXECUTE_STATEMENT and UNKNOWN?



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