[misc] only set skip metadata connection flag when using binary protocol

Author: diego Dupin

src/main/java/org/mariadb/jdbc/client/impl/ConnectionHelper.java

@@ -147,7 +147,11 @@ public static long initializeClientCapabilities(
  | Capabilities.CLIENT_SESSION_TRACK
  | Capabilities.MARIADB_CLIENT_EXTENDED_TYPE_INFO;
 
- if (Boolean.parseBoolean(configuration.nonMappedOptions().getProperty("enableSkipMeta", "true"))
+ // since skipping metadata is only available when using binary protocol,
+ // only set it when server permit it and using binary protocol
+ if (configuration.useServerPrepStmts()
+ && Boolean.parseBoolean(
+ configuration.nonMappedOptions().getProperty("enableSkipMeta", "true"))
  && (serverCapabilities & Capabilities.MARIADB_CLIENT_CACHE_METADATA) != 0) {
  capabilities |= Capabilities.MARIADB_CLIENT_CACHE_METADATA;
  }