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   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
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   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */

#ifndef XA_SQL_CMD_XA_START
#define XA_SQL_CMD_XA_START

#include "sql/sql_cmd.h"  // Sql_cmd
#include "sql/xa.h"       // xid_t

/**
  @class Sql_cmd_xa_start

  This class represents the `XA START ...` SQL statement which starts an XA
  transaction with the given xid value.

  @see Sql_cmd
*/
class Sql_cmd_xa_start : public Sql_cmd {
 public:
  /**
    Class constructor.

    @param xid_arg XID of the XA transacation about to start
    @param xa_option Additional options for the `XA START` command
   */
  Sql_cmd_xa_start(xid_t *xid_arg, enum xa_option_words xa_option);
  virtual ~Sql_cmd_xa_start() override = default;

  /**
    Retrieves the SQL command code for this class, `SQLCOM_XA_START`.

    @see Sql_cmd::sql_command_code

    @return The SQL command code for this class, `SQLCOM_XA_START`.
   */
  enum_sql_command sql_command_code() const override;
  /**
    Executes the SQL command.

    @see Sql_cmd::execute

    @param thd The `THD` session object within which the command is being
               executed.

    @return false if the execution is successful, true otherwise.
   */
  bool execute(THD *thd) override;

 private:
  /** The XID associated with the underlying XA transaction. */
  xid_t *m_xid;
  /** Options associated with the underlying `XA START`  */
  enum xa_option_words m_xa_opt;

  /**
    Start a XA transaction with the given xid value.

    @param thd    Current thread

    @retval false  Success
    @retval true   Failure
  */
  bool trans_xa_start(THD *thd);
};

#endif  // XA_SQL_CMD_XA_START