Merge pull request #356 from youngsofun/fix

refactor: republic some classes.

Author: youngsofun

databend-jdbc/src/main/java/com/databend/jdbc/ConnectionProperties.java

@@ -9,7 +9,7 @@
 import java.util.Set;
 
 // all possible JDBC properties options currently supported by databend driver
-final class ConnectionProperties {
+public final class ConnectionProperties {
     public static final ConnectionProperty<String> USER = new User();
     public static final ConnectionProperty<String> PASSWORD = new Password();
     public static final ConnectionProperty<Boolean> SSL = new Ssl();

databend-jdbc/src/main/java/com/databend/jdbc/DatabendColumnInfo.java

@@ -10,7 +10,7 @@
 
 import static java.util.Objects.requireNonNull;
 
-class DatabendColumnInfo {
+public class DatabendColumnInfo {
     private static final int VARBINARY_MAX = 1024 * 1024 * 1024;
     // current longest time zone is 32
     private static final int TIME_ZONE_MAX = 40;
@@ -362,6 +362,4 @@ public DatabendColumnInfo build() {
                     catalogName);
         }
     }
-
-
 }