xref: /dports/databases/xtrabackup8/percona-xtrabackup-8.0.14/sql/parse_tree_partitions.h

/* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.

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   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

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   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */

#ifndef PARSE_TREE_PARTITIONS_INCLUDED
#define PARSE_TREE_PARTITIONS_INCLUDED

#include <stddef.h>
#include <sys/types.h>

#include "lex_string.h"
#include "my_base.h"
#include "my_inttypes.h"
#include "sql/mem_root_array.h"
#include "sql/parse_tree_helpers.h"
#include "sql/parse_tree_node_base.h"
#include "sql/partition_element.h"
#include "sql/partition_info.h"

class Item;
class THD;
template <class T>
class List;

/**
  Parse context for partitioning-specific parse tree nodes.

  For internal use in the contextualization code.

  @ingroup ptn_partitioning
*/
struct Partition_parse_context : public Parse_context,
                                 public Parser_partition_info {
  Partition_parse_context(THD *const thd, partition_info *part_info,
                          partition_element *current_partition,
                          partition_element *curr_part_elem,
                          bool is_add_or_reorganize_partition);

  Partition_parse_context(THD *thd_arg, partition_info *part_info_arg,
                          bool is_add_or_reorganize_partition)
      : Partition_parse_context(thd_arg, part_info_arg, nullptr, nullptr,
                                is_add_or_reorganize_partition) {}

  /**
    True for "ALTER TABLE ADD PARTITION" and "ALTER TABLE REORGANIZE PARTITION"
    statements, otherwise false.
  */
  const bool is_add_or_reorganize_partition;
};

/**
  Base class for all Partition_parse_context-dependent nodes

  @ingroup ptn_partitioning
*/
typedef Parse_tree_node_tmpl<Partition_parse_context> Parse_tree_part_node;

/**
  Base class for all partition options

  @ingroup ptn_part_options
*/
class PT_partition_option : public Parse_tree_part_node {};

/**
  Node for the @SQL{COMMENT [=] @<string@>} partition option

  @ingroup ptn_part_options
*/
class PT_partition_comment : public PT_partition_option {
  typedef PT_partition_option super;

  char *comment;

 public:
  explicit PT_partition_comment(char *comment) : comment(comment) {}

  bool contextualize(Partition_parse_context *pc) override {
    if (super::contextualize(pc)) return true;

    pc->curr_part_elem->part_comment = comment;
    return false;
  }
};

/**
  Node for the @SQL{INDEX DIRECTORY [=] @<string@>} partition option

  @ingroup ptn_part_options
*/
class PT_partition_index_directory : public PT_partition_option {
  typedef PT_partition_option super;

  const char *index_directory;

 public:
  explicit PT_partition_index_directory(const char *index_directory)
      : index_directory(index_directory) {}

  bool contextualize(Partition_parse_context *pc) override {
    if (super::contextualize(pc)) return true;

    pc->curr_part_elem->index_file_name = index_directory;
    return false;
  }
};

/**
  Node for the @SQL{DATA DIRECTORY [=] @<string@>} partition option

  @ingroup ptn_part_options
*/
class PT_partition_data_directory : public PT_partition_option {
  typedef PT_partition_option super;

  const char *data_directory;

 public:
  explicit PT_partition_data_directory(const char *data_directory)
      : data_directory(data_directory) {}

  bool contextualize(Partition_parse_context *pc) override {
    if (super::contextualize(pc)) return true;

    pc->curr_part_elem->data_file_name = data_directory;
    return false;
  }
};

/**
  Node for the @SQL{MIN_ROWS [=] @<integer@>} partition option

  @ingroup ptn_part_options
*/
class PT_partition_min_rows : public PT_partition_option {
  typedef PT_partition_option super;

  ha_rows min_rows;

 public:
  explicit PT_partition_min_rows(ha_rows min_rows) : min_rows(min_rows) {}

  bool contextualize(Partition_parse_context *pc) override {
    if (super::contextualize(pc)) return true;

    pc->curr_part_elem->part_min_rows = min_rows;
    return false;
  }
};

/**
  Node for the @SQL{MAX_ROWS [=] @<integer@>} partition option

  @ingroup ptn_part_options
*/
class PT_partition_max_rows : public PT_partition_option {
  typedef PT_partition_option super;

  ha_rows max_rows;

 public:
  explicit PT_partition_max_rows(ha_rows max_rows) : max_rows(max_rows) {}

  bool contextualize(Partition_parse_context *pc) override {
    if (super::contextualize(pc)) return true;

    pc->curr_part_elem->part_max_rows = max_rows;
    return false;
  }
};

/**
  Node for the @SQL{NODEGROUP [=] @<integer@>} partition option

  @ingroup ptn_part_options
*/
class PT_partition_nodegroup : public PT_partition_option {
  typedef PT_partition_option super;

  uint16 nodegroup;

 public:
  explicit PT_partition_nodegroup(uint16 nodegroup) : nodegroup(nodegroup) {}

  bool contextualize(Partition_parse_context *pc) override {
    if (super::contextualize(pc)) return true;

    pc->curr_part_elem->nodegroup_id = nodegroup;
    return false;
  }
};

/**
  Node for the @SQL{[STORAGE] ENGINE [=] @<identifier|string@>} partition option

  @ingroup ptn_part_options
*/
class PT_partition_engine : public PT_partition_option {
  typedef PT_partition_option super;

 public:
  const LEX_CSTRING name;

  explicit PT_partition_engine(const LEX_CSTRING &name) : name(name) {}

  bool contextualize(Partition_parse_context *pc) override {
    if (super::contextualize(pc)) return true;

    return resolve_engine(pc->thd, name, false,  // partition can't be temporary
                          false, &pc->curr_part_elem->engine_type);
  }
};

/**
  Node for the @SQL{TABLESPACE [=] @<identifier@>} partition option

  @ingroup ptn_part_options
*/
class PT_partition_tablespace : public PT_partition_option {
  typedef PT_partition_option super;

  const char *tablespace;

 public:
  explicit PT_partition_tablespace(const char *tablespace)
      : tablespace(tablespace) {}

  bool contextualize(Partition_parse_context *pc) override {
    if (super::contextualize(pc)) return true;

    pc->curr_part_elem->tablespace_name = tablespace;
    return false;
  }
};

/**
  Node for the @SQL{SUBRAPTITION} clause of @SQL{CREATE/ALTER TABLE}

  @ingroup ptn_partitioning
*/
class PT_subpartition : public Parse_tree_part_node {
  const POS pos;
  const char *name;
  const Mem_root_array<PT_partition_option *> *options;

 public:
  PT_subpartition(const POS &pos, const char *name,
                  Mem_root_array<PT_partition_option *> *options)
      : pos(pos), name(name), options(options) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Base class for partition value nodes: @SQL{MAX_VALUE} values or expressions

  @ingroup ptn_partitioning
*/
class PT_part_value_item : public Parse_tree_part_node {};

/**
  Node for the @SQL{MAX_VALUE} partition value in @SQL{CREATE/ALTER TABLE}

  @ingroup ptn_partitioning
*/
class PT_part_value_item_max : public PT_part_value_item {
  typedef PT_part_value_item super;

  const POS pos;

 public:
  explicit PT_part_value_item_max(const POS &pos) : pos(pos) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Node for the partitioning expression in @SQL{CREATE/ALTER TABLE}

  @ingroup ptn_partitioning
*/
class PT_part_value_item_expr : public PT_part_value_item {
  typedef PT_part_value_item super;

  const POS pos;
  Item *expr;

 public:
  explicit PT_part_value_item_expr(const POS &pos, Item *expr)
      : pos(pos), expr(expr) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Base class for @SQL{VALUES} partitioning clauses

  @ingroup ptn_partitioning
*/
class PT_part_values : public Parse_tree_part_node {};

/**
  Node for a list of partitioning values in @SQL{VALUES} clauses

  @ingroup ptn_partitioning
*/
class PT_part_value_item_list_paren : public PT_part_values {
  typedef PT_part_values super;

  Mem_root_array<PT_part_value_item *> *values;
  const POS paren_pos;

 public:
  explicit PT_part_value_item_list_paren(
      Mem_root_array<PT_part_value_item *> *values, const POS &paren_pos)
      : values(values), paren_pos(paren_pos) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Node for a list of partitioning values in the @SQL{VALUES IN} clause

  @ingroup ptn_partitioning
*/
class PT_part_values_in_item : public PT_part_values {
  typedef PT_part_values super;

  const POS pos;
  PT_part_value_item_list_paren *item;

 public:
  explicit PT_part_values_in_item(const POS &pos,
                                  PT_part_value_item_list_paren *item)
      : pos(pos), item(item) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Node for a list of partitioning values in the @SQL{VALUES IN} clause

  @ingroup ptn_partitioning
*/
class PT_part_values_in_list : public PT_part_values {
  typedef PT_part_values super;

  const POS pos;
  Mem_root_array<PT_part_value_item_list_paren *> *list;

 public:
  explicit PT_part_values_in_list(
      const POS &pos, Mem_root_array<PT_part_value_item_list_paren *> *list)
      : pos(pos), list(list) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Node for the @SQL{PARTITION} clause of CREATE/ALTER TABLE

  @ingroup ptn_partitioning
*/
class PT_part_definition : public Parse_tree_part_node {
  typedef Parse_tree_part_node super;

  const POS pos;
  const LEX_STRING name;
  partition_type type;
  PT_part_values *const opt_part_values;
  const POS values_pos;
  Mem_root_array<PT_partition_option *> *opt_part_options;
  Mem_root_array<PT_subpartition *> *opt_sub_partitions;
  const POS sub_partitions_pos;

 public:
  PT_part_definition(const POS &pos, const LEX_STRING &name,
                     partition_type type, PT_part_values *const opt_part_values,
                     const POS &values_pos,
                     Mem_root_array<PT_partition_option *> *opt_part_options,
                     Mem_root_array<PT_subpartition *> *opt_sub_partitions,
                     const POS &sub_partitions_pos)
      : pos(pos),
        name(name),
        type(type),
        opt_part_values(opt_part_values),
        values_pos(values_pos),
        opt_part_options(opt_part_options),
        opt_sub_partitions(opt_sub_partitions),
        sub_partitions_pos(sub_partitions_pos) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Base class for all subpartitioning clause nodes

  @ingroup ptn_partitioning
*/
class PT_sub_partition : public Parse_tree_part_node {};

/**
  Node for the @SQL{SUBRAPTITION BY HASH} definition clause

  @ingroup ptn_partitioning
*/
class PT_sub_partition_by_hash : public PT_sub_partition {
  typedef PT_sub_partition super;

  const bool is_linear;
  const POS hash_pos;
  Item *hash;
  const uint opt_num_subparts;

 public:
  PT_sub_partition_by_hash(bool is_linear, const POS &hash_pos, Item *hash,
                           uint opt_num_subparts)
      : is_linear(is_linear),
        hash_pos(hash_pos),
        hash(hash),
        opt_num_subparts(opt_num_subparts) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Node for the @SQL{SUBRAPTITION BY KEY} definition clause

  @ingroup ptn_partitioning
*/
class PT_sub_partition_by_key : public PT_sub_partition {
  typedef PT_sub_partition super;

  const bool is_linear;
  enum_key_algorithm key_algo;
  List<char> *field_names;
  const uint opt_num_subparts;

 public:
  PT_sub_partition_by_key(bool is_linear, enum_key_algorithm key_algo,
                          List<char> *field_names, const uint opt_num_subparts)
      : is_linear(is_linear),
        key_algo(key_algo),
        field_names(field_names),
        opt_num_subparts(opt_num_subparts) {}

  bool contextualize(Partition_parse_context *pc) override;
};

class PT_part_type_def : public Parse_tree_part_node {
 protected:
  bool set_part_field_list(Partition_parse_context *pc, List<char> *list);

  bool itemize_part_expr(Partition_parse_context *pc, const POS &pos,
                         Item **item);
};

/**
  Node for the @SQL{PARTITION BY [LINEAR] KEY} type clause

  @ingroup ptn_partitioning
*/
class PT_part_type_def_key : public PT_part_type_def {
  typedef PT_part_type_def super;

  const bool is_linear;
  const enum_key_algorithm key_algo;
  List<char> *const opt_columns;

 public:
  PT_part_type_def_key(bool is_linear, enum_key_algorithm key_algo,
                       List<char> *opt_columns)
      : is_linear(is_linear), key_algo(key_algo), opt_columns(opt_columns) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Node for the @SQL{PARTITION BY [LINEAR] HASH} type clause

  @ingroup ptn_partitioning
*/
class PT_part_type_def_hash : public PT_part_type_def {
  typedef PT_part_type_def super;

  const bool is_linear;
  const POS expr_pos;
  Item *expr;

 public:
  PT_part_type_def_hash(bool is_linear, const POS &expr_pos, Item *expr)
      : is_linear(is_linear), expr_pos(expr_pos), expr(expr) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Node for the @SQL{PARTITION BY RANGE (@<expression@>) } type clause

  @ingroup ptn_partitioning
*/
class PT_part_type_def_range_expr : public PT_part_type_def {
  typedef PT_part_type_def super;

  const POS expr_pos;
  Item *expr;

 public:
  PT_part_type_def_range_expr(const POS &expr_pos, Item *expr)
      : expr_pos(expr_pos), expr(expr) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Node for the @SQL{PARTITION BY RANGE COLUMNS (@<ident list@>) } type clause

  @ingroup ptn_partitioning
*/
class PT_part_type_def_range_columns : public PT_part_type_def {
  typedef PT_part_type_def super;

  List<char> *const columns;

 public:
  explicit PT_part_type_def_range_columns(List<char> *columns)
      : columns(columns) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Node for the @SQL{PARTITION BY LIST (@<expression@>) } type clause

  @ingroup ptn_partitioning
*/
class PT_part_type_def_list_expr : public PT_part_type_def {
  typedef PT_part_type_def super;

  const POS expr_pos;
  Item *expr;

 public:
  PT_part_type_def_list_expr(const POS &expr_pos, Item *expr)
      : expr_pos(expr_pos), expr(expr) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Node for the @SQL{PARTITION BY LIST COLUMNS (@<ident list@>) } type clause

  @ingroup ptn_partitioning
*/
class PT_part_type_def_list_columns : public PT_part_type_def {
  typedef PT_part_type_def super;

  List<char> *const columns;

 public:
  explicit PT_part_type_def_list_columns(List<char> *columns)
      : columns(columns) {}

  bool contextualize(Partition_parse_context *pc) override;
};

/**
  Node for the @SQL{PARTITION} definition clause

  @ingroup ptn_partitioning
*/
class PT_partition : public Parse_tree_node {
  typedef Parse_tree_node super;

  PT_part_type_def *const part_type_def;
  const uint opt_num_parts;
  PT_sub_partition *const opt_sub_part;
  const POS part_defs_pos;
  Mem_root_array<PT_part_definition *> *part_defs;

 public:
  partition_info part_info;

 public:
  PT_partition(PT_part_type_def *part_type_def, uint opt_num_parts,
               PT_sub_partition *opt_sub_part, const POS &part_defs_pos,
               Mem_root_array<PT_part_definition *> *part_defs)
      : part_type_def(part_type_def),
        opt_num_parts(opt_num_parts),
        opt_sub_part(opt_sub_part),
        part_defs_pos(part_defs_pos),
        part_defs(part_defs) {}

  bool contextualize(Parse_context *pc) override;
};

#endif /* PARSE_TREE_PARTITIONS_INCLUDED */