index_stats.h

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/* Copyright (c) 2014, 2023, Oracle and/or its affiliates.
 
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#ifndef DD_TABLES__INDEX_STATS_INCLUDED
#define DD_TABLES__INDEX_STATS_INCLUDED
 
#include <new>
 
#include "sql/dd/impl/types/entity_object_table_impl.h"
#include "sql/dd/impl/types/index_stat_impl.h"
#include "sql/dd/string_type.h"  // dd::String_type
#include "sql/dd/types/index_stat.h"
 
namespace dd {
 
class Object_key;
class Raw_record;
 
namespace tables {
 
///////////////////////////////////////////////////////////////////////////
 
class Index_stats : virtual public Entity_object_table_impl {
 public:
  Index_stats();
 
  static const Index_stats &instance();
 
  enum enum_fields {
    FIELD_SCHEMA_NAME,
    FIELD_TABLE_NAME,
    FIELD_INDEX_NAME,
    FIELD_COLUMN_NAME,
    FIELD_CARDINALITY,
    FIELD_CACHED_TIME,
    NUMBER_OF_FIELDS  // Always keep this entry at the end of the enum
  };
 
  enum enum_indexes { INDEX_UK_SCHEMA_TABLE_INDEX_COLUMN };
 
  enum enum_foreign_keys {};
 
  Index_stat *create_entity_object(const Raw_record &) const override {
    return new (std::nothrow) Index_stat_impl();
  }
 
  static Index_stat::Name_key *create_object_key(
      const String_type &schema_name, const String_type &table_name,
      const String_type &index_name, const String_type &column_name);
 
  static Object_key *create_range_key_by_table_name(
      const String_type &schema_name, const String_type &table_name);
};
 
}  // namespace tables
}  // namespace dd
 
#endif  // DD_TABLES__INDEX_STATS_INCLUDED