[Improve][Jdbc] Support custom case-sensitive config for dameng (#6510)

Author: hailin0

Diff for: seatunnel-connectors-v2/connector-jdbc/src/main/java/org/apache/seatunnel/connectors/seatunnel/jdbc/internal/dialect/dm/DmdbDialect.java

@@ -22,7 +22,6 @@
 import org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.DatabaseIdentifier;
 import org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.JdbcDialect;
 import org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.JdbcDialectTypeMapper;
-import org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.dialectenum.FieldIdeEnum;
 
 import java.util.Arrays;
 import java.util.List;
@@ -31,14 +30,12 @@
 
 public class DmdbDialect implements JdbcDialect {
 
-    public String fieldIde = FieldIdeEnum.ORIGINAL.getValue();
+    public String fieldIde;
 
     public DmdbDialect(String fieldIde) {
         this.fieldIde = fieldIde;
     }
 
-    public DmdbDialect() {}
-
     @Override
     public String dialectName() {
         return DatabaseIdentifier.DAMENG;

Diff for: seatunnel-connectors-v2/connector-jdbc/src/main/java/org/apache/seatunnel/connectors/seatunnel/jdbc/internal/dialect/dm/DmdbDialectFactory.java

@@ -19,6 +19,7 @@
 
 import org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.JdbcDialect;
 import org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.JdbcDialectFactory;
+import org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.dialectenum.FieldIdeEnum;
 
 import com.google.auto.service.AutoService;
 
@@ -33,6 +34,11 @@ public boolean acceptsURL(String url) {
 
     @Override
     public JdbcDialect create() {
-        return new DmdbDialect();
+        return create(null, FieldIdeEnum.ORIGINAL.getValue());
+    }
+
+    @Override
+    public JdbcDialect create(String compatibleMode, String fieldIde) {
+        return new DmdbDialect(fieldIde);
     }
 }

Diff for: seatunnel-connectors-v2/connector-jdbc/src/test/java/org/apache/seatunnel/connectors/seatunnel/jdbc/internal/dialect/dm/DmdbDialectTest.java

@@ -0,0 +1,47 @@
+/*
+ * 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.seatunnel.connectors.seatunnel.jdbc.internal.dialect.dm;
+
+import org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.JdbcDialect;
+import org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.dialectenum.FieldIdeEnum;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class DmdbDialectTest {
+    @Test
+    public void testIdentifierCaseSensitive() {
+        DmdbDialectFactory factory = new DmdbDialectFactory();
+
+        JdbcDialect dialect = factory.create();
+        Assertions.assertEquals("\"test\"", dialect.quoteIdentifier("test"));
+        Assertions.assertEquals("\"TEST\"", dialect.quoteIdentifier("TEST"));
+
+        dialect = factory.create(null, FieldIdeEnum.ORIGINAL.getValue());
+        Assertions.assertEquals("\"test\"", dialect.quoteIdentifier("test"));
+        Assertions.assertEquals("\"TEST\"", dialect.quoteIdentifier("TEST"));
+
+        dialect = factory.create(null, FieldIdeEnum.LOWERCASE.getValue());
+        Assertions.assertEquals("\"test\"", dialect.quoteIdentifier("test"));
+        Assertions.assertEquals("\"test\"", dialect.quoteIdentifier("TEST"));
+
+        dialect = factory.create(null, FieldIdeEnum.UPPERCASE.getValue());
+        Assertions.assertEquals("\"TEST\"", dialect.quoteIdentifier("test"));
+        Assertions.assertEquals("\"TEST\"", dialect.quoteIdentifier("TEST"));
+    }
+}