Fixed work with Date, Datetime & Timestamp types (#57)

Author: alex268

jdbc/src/main/java/tech/ydb/jdbc/YdbConnection.java

@@ -13,14 +13,6 @@
 import tech.ydb.table.result.ResultSetReader;
 
 public interface YdbConnection extends Connection {
-
-    /**
-     * Returns class with some type conversion capabilities
-     *
-     * @return ydb types converter
-     */
-    YdbTypes getYdbTypes();
-
     /**
      * Return current YDB transaction, if exists
      *

jdbc/src/main/java/tech/ydb/jdbc/YdbConst.java

@@ -100,6 +100,7 @@ public final class YdbConst {
     public static final String UNABLE_TO_CAST = "Cannot cast [%s] to [%s]";
     public static final String UNABLE_TO_CONVERT = "Cannot cast [%s] with value [%s] to [%s]";
     public static final String UNABLE_TO_CONVERT_AS_URL = "Cannot cast as URL: ";
+    public static final String UNABLE_TO_CAST_TO_CLASS = "Cannot cast [%s] to class [%s]";
 
     public static final String MISSING_VALUE_FOR_PARAMETER = "Missing value for parameter: ";
     public static final String MISSING_REQUIRED_VALUE = "Missing required value for parameter: ";