delete.h

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/*
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 *
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#ifndef ROUTER_SRC_MYSQL_REST_SERVICE_INCLUDE_MRS_DATABASE_JSON_MAPPER_VIEW_DELETE_H_
#define ROUTER_SRC_MYSQL_REST_SERVICE_INCLUDE_MRS_DATABASE_JSON_MAPPER_VIEW_DELETE_H_
 
#ifdef RAPIDJSON_NO_SIZETYPEDEFINE
#include "my_rapidjson_size_t.h"
#endif
 
#include <rapidjson/document.h>
#include <list>
#include <map>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "mrs/database/entry/object.h"
#include "mrs/database/filter_object_generator.h"
#include "mrs/database/helper/object_row_ownership.h"
#include "mrs/database/helper/query.h"
#include "mrs/database/json_mapper/change.h"
#include "mrs/database/json_mapper/common.h"
#include "mrs/database/json_mapper/errors.h"
#include "mrs/database/json_mapper/select.h"
#include "mysqlrouter/utils_sqlstring.h"
 
namespace mrs {
namespace database {
namespace dv {
 
class RowDeleteBase : public RowChangeOperation {
 protected:
  RowDeleteBase(std::shared_ptr<Operation> parent, std::shared_ptr<Table> table,
                const ObjectRowOwnership &row_ownership);
 
  RowDeleteBase(std::shared_ptr<Operation> parent, std::shared_ptr<Table> table,
                const PrimaryKeyColumnValues &pk_values,
                const ObjectRowOwnership &row_ownership);
 
 public:
  void run(MySQLSession *session) override;
 
  void process_to_many(const ForeignKeyReference &ref,
                       JSONInputArray input) override;
 
  void process_to_one(const ForeignKeyReference &, JSONInputObject) override;
 
 protected:
  virtual void do_delete(MySQLSession *session);
  virtual mysqlrouter::sqlstring delete_sql() const = 0;
 
  bool has_undeletable_fks_ = false;
};
 
class RowDelete : public RowDeleteBase {
 public:
  RowDelete(std::shared_ptr<Table> table,
            const PrimaryKeyColumnValues &pk_values,
            const ObjectRowOwnership &row_ownership)
      : RowDeleteBase({}, table, pk_values, row_ownership) {}
 
  void process(JSONInputObject input) override;
 
 private:
  mysqlrouter::sqlstring delete_sql() const override;
};
 
class RowDeleteMany : public RowDeleteBase {
 public:
  RowDeleteMany(std::shared_ptr<Table> table, mysqlrouter::sqlstring filter,
                const ObjectRowOwnership &row_ownership)
      : RowDeleteBase({}, table, row_ownership), filter_(std::move(filter)) {}
 
  void process(JSONInputObject input) override;
 
  void append_match_condition(mysqlrouter::sqlstring &sql) const override;
 
 private:
  mysqlrouter::sqlstring delete_sql() const override;
 
  mysqlrouter::sqlstring filter_;
};
 
class RowDeleteReferencing : public RowDeleteBase {
 public:
  RowDeleteReferencing(std::shared_ptr<Operation> parent,
                       std::shared_ptr<Table> owning_table,
                       const ObjectRowOwnership &row_ownership)
      : RowDeleteBase(parent, owning_table, row_ownership) {}
 
  RowDeleteReferencing(std::shared_ptr<Operation> parent,
                       std::shared_ptr<Table> owning_table,
                       const PrimaryKeyColumnValues &pk_values,
                       const ObjectRowOwnership &row_ownership)
      : RowDeleteBase(parent, owning_table, pk_values, row_ownership) {}
 
  void delete_rows(std::vector<PrimaryKeyColumnValues> rows);
 
 protected:
  mysqlrouter::sqlstring delete_sql() const override;
 
 private:
  std::vector<PrimaryKeyColumnValues> rows_to_delete_;
};
 
}  // namespace dv
}  // namespace database
}  // namespace mrs
#endif  // ROUTER_SRC_MYSQL_REST_SERVICE_INCLUDE_MRS_DATABASE_JSON_MAPPER_VIEW_DELETE_H_