[mysql] disable date-time parsing string sync

no need for the (Conn/J) driver to waste time on parsing

Author: kares

lib/arjdbc/mysql/connection_methods.rb

@@ -67,6 +67,7 @@ def mysql_connection(config)
         # with reconnect fail-over sets connection read-only (by default)
         # properties['failOverReadOnly'] ||= 'false'
       end
+      properties['noDatetimeStringSync'] = true unless properties.key?('noDatetimeStringSync')
     end
     if config[:sslkey] || sslcert = config[:sslcert] # || config[:use_ssl]
       properties['useSSL'] ||= true # supported by MariaDB as well
@@ -89,11 +90,12 @@ def mysql_connection(config)
       properties['localSocket'] ||= socket if mariadb_driver
     end
 
+    # properties['useJDBCCompliantTimezoneShift'] ||= true
     # for the Connector/J 5.1 line this is true by default - but it requires some really nasty
     # quirks to get casted Time values extracted properly according for AR's default_timezone
     # - thus we're turning it off (should be off in newer driver versions >= 6 anyway)
     # + also MariaDB driver is compilant and we would need to branch out based on driver
-    properties['useLegacyDatetimeCode'] = false
+    properties['useLegacyDatetimeCode'] = false # disables the effect of 'useTimezone'
 
     jdbc_connection(config)
   end