caican00 commented on code in PR #5722:
URL: https://github.com/apache/gravitino/pull/5722#discussion_r1885644709


##########
catalogs/catalog-common/src/main/java/org/apache/gravitino/catalog/lakehouse/paimon/PaimonPropertiesUtils.java:
##########
@@ -0,0 +1,95 @@
+/*
+ * 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.gravitino.catalog.lakehouse.paimon;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Optional;
+import org.apache.gravitino.storage.OSSProperties;
+import org.apache.gravitino.storage.S3Properties;
+
+public class PaimonPropertiesUtils {
+
+  // Map that maintains the mapping of keys in Gravitino to that in Paimon, 
for example, users
+  // will only need to set the configuration 'catalog-backend' in Gravitino 
and Gravitino will
+  // change it to `catalogType` automatically and pass it to Paimon.
+  public static final Map<String, String> GRAVITINO_CONFIG_TO_PAIMON;
+
+  static {
+    Map<String, String> map = new HashMap();
+    map.put(PaimonConstants.CATALOG_BACKEND, PaimonConstants.CATALOG_BACKEND);
+    map.put(PaimonConstants.GRAVITINO_JDBC_DRIVER, 
PaimonConstants.GRAVITINO_JDBC_DRIVER);
+    map.put(PaimonConstants.GRAVITINO_JDBC_USER, 
PaimonConstants.PAIMON_JDBC_USER);
+    map.put(PaimonConstants.GRAVITINO_JDBC_PASSWORD, 
PaimonConstants.PAIMON_JDBC_PASSWORD);
+    map.put(PaimonConstants.URI, PaimonConstants.URI);
+    map.put(PaimonConstants.WAREHOUSE, PaimonConstants.WAREHOUSE);
+    map.put(PaimonConstants.CATALOG_BACKEND_NAME, 
PaimonConstants.CATALOG_BACKEND_NAME);
+    // S3
+    map.put(S3Properties.GRAVITINO_S3_ENDPOINT, PaimonConstants.S3_ENDPOINT);
+    map.put(S3Properties.GRAVITINO_S3_ACCESS_KEY_ID, 
PaimonConstants.S3_ACCESS_KEY);
+    map.put(S3Properties.GRAVITINO_S3_SECRET_ACCESS_KEY, 
PaimonConstants.S3_SECRET_KEY);
+    // OSS
+    map.put(OSSProperties.GRAVITINO_OSS_ENDPOINT, 
PaimonConstants.OSS_ENDPOINT);
+    map.put(OSSProperties.GRAVITINO_OSS_ACCESS_KEY_ID, 
PaimonConstants.OSS_ACCESS_KEY);
+    map.put(OSSProperties.GRAVITINO_OSS_ACCESS_KEY_SECRET, 
PaimonConstants.OSS_SECRET_KEY);
+    GRAVITINO_CONFIG_TO_PAIMON = Collections.unmodifiableMap(map);
+  }
+
+  /**
+   * Converts Gravitino properties to Paimon catalog properties, the common 
transform logic shared
+   * by Spark connector, Gravitino Paimon catalog.
+   *
+   * @param gravitinoProperties a map of Gravitino configuration properties.
+   * @return a map containing Paimon catalog properties.
+   */
+  public static Map<String, String> toPaimonCatalogProperties(
+      Map<String, String> gravitinoProperties) {
+    Map<String, String> paimonProperties = new HashMap<>();
+    gravitinoProperties.forEach(
+        (key, value) -> {
+          if (GRAVITINO_CONFIG_TO_PAIMON.containsKey(key)) {
+            paimonProperties.put(GRAVITINO_CONFIG_TO_PAIMON.get(key), value);
+          }
+        });
+    return paimonProperties;
+  }
+
+  /**
+   * Get catalog backend name from Gravitino catalog properties.
+   *
+   * @param catalogProperties a map of Gravitino catalog properties.
+   * @return catalog backend name.
+   */
+  public static String getCatalogBackendName(Map<String, String> 
catalogProperties) {
+    String backendName = 
catalogProperties.get(PaimonConstants.CATALOG_BACKEND_NAME);

Review Comment:
   updated.



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