column_type_element_impl.h

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/* Copyright (c) 2014, 2023, Oracle and/or its affiliates.
 
   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,
   as published by the Free Software Foundation.
 
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   documentation.  The authors of MySQL hereby grant you an additional
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#ifndef DD__COLUMN_TYPE_ELEMENT_IMPL_INCLUDED
#define DD__COLUMN_TYPE_ELEMENT_IMPL_INCLUDED
 
#include <sys/types.h>
#include <new>
 
#include "sql/dd/impl/types/weak_object_impl.h"  // dd::Weak_object_impl
#include "sql/dd/sdi_fwd.h"
#include "sql/dd/string_type.h"
#include "sql/dd/types/column_type_element.h"  // dd::Column_type_element
 
namespace dd {
 
///////////////////////////////////////////////////////////////////////////
 
class Column;
class Column_impl;
class Object_key;
class Object_table;
class Open_dictionary_tables_ctx;
class Raw_record;
class Sdi_rcontext;
class Sdi_wcontext;
class Weak_object;
 
///////////////////////////////////////////////////////////////////////////
 
class Column_type_element_impl : public Weak_object_impl,
                                 public Column_type_element {
 public:
  Column_type_element_impl() : m_index(0) {}
 
  Column_type_element_impl(Column_impl *column)
      : m_index(0), m_column(column) {}
 
  Column_type_element_impl(const Column_type_element_impl &src,
                           Column_impl *parent);
 
  ~Column_type_element_impl() override = default;
 
 public:
  const Object_table &object_table() const override;
 
  static void register_tables(Open_dictionary_tables_ctx *otx);
 
  bool validate() const override;
 
  bool store_attributes(Raw_record *r) override;
 
  bool restore_attributes(const Raw_record &r) override;
 
  void set_ordinal_position(uint ordinal_position) {
    m_index = ordinal_position;
  }
 
  virtual uint ordinal_position() const { return index(); }
 
  void serialize(Sdi_wcontext *wctx, Sdi_writer *w) const override;
 
  bool deserialize(Sdi_rcontext *rctx, const RJ_Value &val) override;
 
 public:
  static Column_type_element_impl *restore_item(Column_impl *column) {
    return new (std::nothrow) Column_type_element_impl(column);
  }
 
  static Column_type_element_impl *clone(const Column_type_element_impl &other,
                                         Column_impl *column) {
    return new (std::nothrow) Column_type_element_impl(other, column);
  }
 
 public:
  /////////////////////////////////////////////////////////////////////////
  // Name.
  /////////////////////////////////////////////////////////////////////////
 
  const String_type &name() const override { return m_name; }
 
  void set_name(const String_type &name) override { m_name = name; }
 
  /////////////////////////////////////////////////////////////////////////
  // Column
  /////////////////////////////////////////////////////////////////////////
 
  const Column &column() const override;
 
  /////////////////////////////////////////////////////////////////////////
  // index.
  /////////////////////////////////////////////////////////////////////////
 
  uint index() const override { return m_index; }
 
 public:
  void debug_print(String_type &outb) const override;
 
 protected:
  Object_key *create_primary_key() const override;
  bool has_new_primary_key() const override;
 
 protected:
  // Fields
  String_type m_name;
  uint m_index;
 
  // References to other objects
  Column_impl *m_column;
};
 
///////////////////////////////////////////////////////////////////////////
 
}  // namespace dd
 
#endif  // DD__COLUMN_TYPE_ELEMENT_IMPL_INCLUDED