[GitHub] [shardingsphere] strongduanmu commented on a diff in pull request #18655: support UNLISTEN statement

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

strongduanmu commented on code in PR #18655:
URL: https://github.com/apache/shardingsphere/pull/18655#discussion_r908373047


##########
shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/dialect/statement/postgresql/ddl/PostgreSQLUnListenStatement.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.shardingsphere.sql.parser.sql.dialect.statement.postgresql.ddl;
+
+import lombok.ToString;
+import org.apache.shardingsphere.sql.parser.sql.common.statement.ddl.UnListenStatement;
+import org.apache.shardingsphere.sql.parser.sql.dialect.statement.postgresql.PostgreSQLStatement;
+
+/**
+ * PostgreSQL listen statement.

Review Comment:
   Please modify listen to unlisten.



##########
shardingsphere-test/shardingsphere-parser-test/src/main/java/org/apache/shardingsphere/test/sql/parser/parameterized/jaxb/cases/domain/statement/ddl/UnListenStatementTestCase.java:
##########
@@ -0,0 +1,27 @@
+/*
+ * 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.shardingsphere.test.sql.parser.parameterized.jaxb.cases.domain.statement.ddl;
+
+import org.apache.shardingsphere.test.sql.parser.parameterized.jaxb.cases.domain.statement.SQLParserTestCase;
+
+/**
+ * UnListen statement test case.
+ */
+public final class UnListenStatementTestCase extends SQLParserTestCase {
+    

Review Comment:
   Please remove useless blank line.



##########
shardingsphere-test/shardingsphere-parser-test/src/main/resources/sql/supported/ddl/unlisten.xml:
##########
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ 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.
+  -->
+
+<sql-cases>
+    <sql-case id="unlisten" value="UNLISTEN *;" db-types="PostgreSQL" />
+    <sql-case id="unlisten_notify" value="UNLISTEN notify_async2;" db-types="PostgreSQL" />
+    <sql-case id="unlisten_low" value="UNLISTEN a;" db-types="PostgreSQL" />
+</sql-cases>
+

Review Comment:
   Please remove useless blank line.



##########
shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-postgresql/src/main/antlr4/imports/postgresql/DDLStatement.g4:
##########
@@ -1795,6 +1795,10 @@ listen
     : LISTEN channelName
     ;
 
+unListen

Review Comment:
   Do you think unlisten is better? It looks a word.



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