column_filter_inbound_gipk.h

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#ifndef CS_COLUMN_FILTER_GIPK_H
#define CS_COLUMN_FILTER_GIPK_H
 
#include "sql/changestreams/misc/column_filters/column_filter.h"
#include "sql/rpl_utility.h"  // table_def
 
namespace cs {
namespace util {
/**
  @class ColumnFilterInboundGipk
 
  Class used when we want a column view over a table in a context where the
  replicated table contains a GIPK on the replica, but not on the source.
 
     SOURCE TABLE `t`
       +----+----+----+
       | C1 | C2 | C3 |
       +----+----+----+
 
     REPLICA TABLE `t`
       +------+----+----+----+
       | GIPK | C1 | C2 | C3 |
       +------+----+----+----+
 
  This class filters the first column on iteration.
 */
class ColumnFilterInboundGipk : public ColumnFilter {
  bool filter_column(TABLE const *, size_t column_index) override;
 
  /**
    @brief Is this filter needed given context passed in the parameters
 
    @param thd the thread objected associated to filter
    @param table the table where the columns are being iterated
    @param tabledef the source table definition if applicable
    @return true if the filter should be used
    @return false if the filter is not needed
  */
 public:
  static bool is_filter_needed(THD const &thd, TABLE *table,
                               table_def const *tabledef);
};
}  // namespace util
}  // namespace cs
#endif  // CS_COLUMN_FILTER_GIPK_H