replicated_columns_view_with_gipk_on_source.h

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#ifndef RPL_REPLICATED_COLUMNS_VIEW_GIPK_ON_SOURCE__H
#define RPL_REPLICATED_COLUMNS_VIEW_GIPK_ON_SOURCE__H
 
#include "sql/changestreams/misc/replicated_columns_view.h"  // ReplicatedColumnsView
 
namespace cs {
namespace util {
/**
  @class ReplicatedColumnsViewWithGipkOnSource
 
  Class used when we want a column view over a table in a context where the
  replicated table contains a GIPK on the source, but not on the replica.
 
     SOURCE TABLE `t`
       +------+----+----+----+
       | GIPK | C1 | C2 | C3 |
       +------+----+----+----+
 
     REPLICA TABLE `t`
       +----+----+----+
       | C1 | C2 | C3 |
       +----+----+----+
 
  This class differs from a standard column view:
   - begin() will cause that returned filtered position, that pertain to the
     source, are always incremented by 1.
     This way, C1 on the replica matches C1 on the source data
 */
class ReplicatedColumnsViewWithGipkOnSource : public ReplicatedColumnsView {
 public:
  /**
    Constructor which takes the TABLE object whose field set will be iterated.
 
    @param table reference to the target TABLE object.
    @param thd instance of `THD` class to be used to determine if filtering is
               to be enabled. It may be `nullptr`.
   */
  ReplicatedColumnsViewWithGipkOnSource(TABLE const *table,
                                        THD const *thd = nullptr);
  /**
    Destructor for the class.
   */
  virtual ~ReplicatedColumnsViewWithGipkOnSource() override = default;
  /**
    This method overrides Table_columns_view::begin
    Its start value insure that filtered positions are incremented by 1
    when compared to the base iterator.
 
    @return a column view iterator over the table
   */
  Table_columns_view<>::iterator begin() override;
 
  // --> Deleted constructors and methods to remove default move/copy semantics
  ReplicatedColumnsViewWithGipkOnSource(
      const ReplicatedColumnsViewWithGipkOnSource &rhs) = delete;
  ReplicatedColumnsViewWithGipkOnSource(
      ReplicatedColumnsViewWithGipkOnSource &&rhs) = delete;
  ReplicatedColumnsViewWithGipkOnSource &operator=(
      const ReplicatedColumnsViewWithGipkOnSource &rhs) = delete;
  ReplicatedColumnsViewWithGipkOnSource &operator=(
      ReplicatedColumnsViewWithGipkOnSource &&rhs) = delete;
  // <--
};
}  // namespace util
}  // namespace cs
#endif  // RPL_REPLICATED_COLUMNS_VIEW_GIPK_ON_SOURCE__H