database::query_dialect Class Reference

Abstract interface for database-specific query formatting. More...

#include <query_dialect.h>

Inheritance diagram for database::query_dialect:

Collaboration diagram for database::query_dialect:

Public Types
enum class	query_type {   none , select , insert , update ,   delete_query }

Public Member Functions
virtual	~query_dialect ()=default
virtual void	set_query_type (query_type type)=0
virtual query_type	get_query_type () const =0
virtual void	set_select_columns (const std::vector< std::string > &columns)=0
virtual void	set_from_table (const std::string &table)=0
virtual void	add_where_condition (const query_condition &condition)=0
virtual void	add_where_condition (const std::string &field, const std::string &op, const core::database_value &value)=0
virtual void	add_join (const std::string &table, const std::string &condition, join_type type)=0
virtual void	set_group_by (const std::vector< std::string > &columns)=0
virtual void	set_having (const std::string &condition)=0
virtual void	add_order_by (const std::string &column, sort_order order)=0
virtual void	set_limit (size_t count)=0
virtual void	set_offset (size_t count)=0
virtual void	set_insert_table (const std::string &table)=0
virtual void	set_insert_data (const std::map< std::string, core::database_value > &data)=0
virtual void	set_insert_rows (const std::vector< std::map< std::string, core::database_value > > &rows)=0
virtual void	set_update_table (const std::string &table)=0
virtual void	set_update_data (const std::map< std::string, core::database_value > &data)=0
virtual void	set_delete_table (const std::string &table)=0
virtual void	set_collection (const std::string &name)=0
virtual void	set_key (const std::string &key)=0
virtual std::string	build () const =0
virtual void	reset ()=0
virtual database_types	get_database_type () const =0

Detailed Description

Abstract interface for database-specific query formatting.

This class defines the Strategy interface for formatting queries according to different database dialects (SQL, MongoDB, Redis).

Thread Safety

• NOT thread-safe. Each thread should use its own instance.
• Create separate dialect instances for each thread.

Definition at line 34 of file query_dialect.h.

Member Enumeration Documentation

query_type

enum class database::query_dialect::query_type

strong

Enumerator
none
select
insert
update
delete_query

Definition at line 40 of file query_dialect.h.

{ none, select, insert, update, delete_query };

Constructor & Destructor Documentation

~query_dialect()

virtual database::query_dialect::~query_dialect ( )

virtualdefault

Member Function Documentation

add_join()

virtual void database::query_dialect::add_join ( const std::string & table, const std::string & condition, join_type type )

pure virtual

Implemented in database::detail::sql_dialect.

add_order_by()

virtual void database::query_dialect::add_order_by ( const std::string & column, sort_order order )

pure virtual

Implemented in database::detail::sql_dialect.

add_where_condition() [1/2]

virtual void database::query_dialect::add_where_condition ( const query_condition & condition )

pure virtual

Implemented in database::detail::sql_dialect.

add_where_condition() [2/2]

virtual void database::query_dialect::add_where_condition ( const std::string & field, const std::string & op, const core::database_value & value )

pure virtual

Implemented in database::detail::sql_dialect.

build()

virtual std::string database::query_dialect::build ( ) const

pure virtual

Implemented in database::detail::sql_dialect.

get_database_type()

virtual database_types database::query_dialect::get_database_type ( ) const

pure virtual

Implemented in database::detail::sql_dialect.

get_query_type()

virtual query_type database::query_dialect::get_query_type ( ) const

pure virtual

Implemented in database::detail::sql_dialect.

reset()

virtual void database::query_dialect::reset ( )

pure virtual

Implemented in database::detail::sql_dialect.

set_collection()

virtual void database::query_dialect::set_collection ( const std::string & name )

pure virtual

Implemented in database::detail::sql_dialect.

set_delete_table()

virtual void database::query_dialect::set_delete_table ( const std::string & table )

pure virtual

Implemented in database::detail::sql_dialect.

set_from_table()

virtual void database::query_dialect::set_from_table ( const std::string & table )

pure virtual

Implemented in database::detail::sql_dialect.

set_group_by()

virtual void database::query_dialect::set_group_by ( const std::vector< std::string > & columns )

pure virtual

Implemented in database::detail::sql_dialect.

set_having()

virtual void database::query_dialect::set_having ( const std::string & condition )

pure virtual

Implemented in database::detail::sql_dialect.

set_insert_data()

virtual void database::query_dialect::set_insert_data ( const std::map< std::string, core::database_value > & data )

pure virtual

Implemented in database::detail::sql_dialect.

set_insert_rows()

virtual void database::query_dialect::set_insert_rows ( const std::vector< std::map< std::string, core::database_value > > & rows )

pure virtual

Implemented in database::detail::sql_dialect.

set_insert_table()

virtual void database::query_dialect::set_insert_table ( const std::string & table )

pure virtual

Implemented in database::detail::sql_dialect.

set_key()

virtual void database::query_dialect::set_key ( const std::string & key )

pure virtual

Implemented in database::detail::sql_dialect.

set_limit()

virtual void database::query_dialect::set_limit ( size_t count )

pure virtual

Implemented in database::detail::sql_dialect.

set_offset()

virtual void database::query_dialect::set_offset ( size_t count )

pure virtual

Implemented in database::detail::sql_dialect.

set_query_type()

virtual void database::query_dialect::set_query_type ( query_type type )

pure virtual

Implemented in database::detail::sql_dialect.

set_select_columns()

virtual void database::query_dialect::set_select_columns ( const std::vector< std::string > & columns )

pure virtual

Implemented in database::detail::sql_dialect.

set_update_data()

virtual void database::query_dialect::set_update_data ( const std::map< std::string, core::database_value > & data )

pure virtual

Implemented in database::detail::sql_dialect.

set_update_table()

virtual void database::query_dialect::set_update_table ( const std::string & table )

pure virtual

Implemented in database::detail::sql_dialect.

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The documentation for this class was generated from the following file:

• database/query_dialect.h