datasource metadata

rm-datasource/src/main/java/org/apache/seata/rm/datasource/SeataDataSourceProxyMetadata.java

@@ -17,13 +17,8 @@
 package org.apache.seata.rm.datasource;
 
 import javax.sql.DataSource;
-import java.sql.Connection;
 import java.sql.SQLException;
 
-import org.apache.seata.rm.datasource.metadata.MySQLDataSourceProxyMetadata;
-import org.apache.seata.rm.datasource.util.JdbcUtils;
-import org.apache.seata.sqlparser.util.JdbcConstants;
-
 /**
  * The type Data source proxy metadata.
  *

rm-datasource/src/main/java/org/apache/seata/rm/datasource/SeataDataSourceProxyMetadataFactory.java

@@ -22,7 +22,6 @@
 
 import org.apache.seata.rm.datasource.metadata.DefaultDataSourceProxyMeta;
 import org.apache.seata.rm.datasource.metadata.MySQLDataSourceProxyMetadata;
-import org.apache.seata.rm.datasource.metadata.OracleDataSourceProxyMetadata;
 import org.apache.seata.rm.datasource.util.JdbcUtils;
 import org.apache.seata.sqlparser.util.JdbcConstants;
 

rm-datasource/src/main/java/org/apache/seata/rm/datasource/metadata/DefaultDataSourceProxyMeta.java

@@ -1,3 +1,19 @@
+/*
+ * 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.seata.rm.datasource.metadata;
 
 import javax.sql.DataSource;