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#ifndef VERS_UTILS_INCLUDED
#define VERS_UTILS_INCLUDED
#include "table.h"
#include "sql_class.h"
#include "vers_string.h"
class MDL_auto_lock
{
THD *thd;
TABLE_LIST &table;
bool error;
public:
MDL_auto_lock(THD *_thd, TABLE_LIST &_table) :
thd(_thd), table(_table)
{
DBUG_ASSERT(thd);
table.mdl_request.init(MDL_key::TABLE, table.db, table.table_name, MDL_EXCLUSIVE, MDL_EXPLICIT);
error= thd->mdl_context.acquire_lock(&table.mdl_request, thd->variables.lock_wait_timeout);
}
~MDL_auto_lock()
{
if (!error)
{
DBUG_ASSERT(table.mdl_request.ticket);
thd->mdl_context.release_lock(table.mdl_request.ticket);
table.mdl_request.ticket= NULL;
}
}
bool acquire_error() const { return error; }
};
class Local_da : public Diagnostics_area
{
THD *thd;
uint sql_error;
Diagnostics_area *saved_da;
public:
Local_da(THD *_thd, uint _sql_error= 0) :
Diagnostics_area(_thd->query_id, false, true),
thd(_thd),
sql_error(_sql_error),
saved_da(_thd->get_stmt_da())
{
thd->set_stmt_da(this);
}
~Local_da()
{
if (saved_da)
finish();
}
void finish()
{
DBUG_ASSERT(saved_da && thd);
thd->set_stmt_da(saved_da);
if (is_error())
my_error(sql_error ? sql_error : sql_errno(), MYF(0), message());
if (warn_count() > error_count())
saved_da->copy_non_errors_from_wi(thd, get_warning_info());
saved_da= NULL;
}
};
#endif // VERS_UTILS_INCLUDED
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