dht::Query Class Reference

Describes a query destined to another peer. More...

#include <value.h>

Collaboration diagram for dht::Query:

Public Member Functions
	Query (Select s={}, Where w={}, bool none=false)
	Query (std::string_view q_str)
bool	isSatisfiedBy (const Query &q) const
template<typename Packer>
void	msgpack_pack (Packer &pk) const
void	msgpack_unpack (const msgpack::object &o)
std::string	toString () const

Public Attributes
Select	select {}
Where	where {}
bool	none {false}

Static Public Attributes
static const std::string	QUERY_PARSE_ERROR

Friends
std::ostream &	operator<< (std::ostream &s, const dht::Query &q)

Detailed Description

Describes a query destined to another peer.

This class describes the list of filters on field values and the field itselves to include in the peer response to a GET operation. See FieldValue.

Definition at line 922 of file value.h.

Constructor & Destructor Documentation

Query() [1/2]

dht::Query::Query ( Select s = {}, Where w = {}, bool none = false )

inline

Definition at line 926 of file value.h.

Query() [2/2]

dht::Query::Query ( std::string_view q_str )

inline

Initializes a query based on a SQL-ish formatted string. The abstract form of such a string is the following:

[SELECT $field$ [WHERE $field$=$value$]]

where

• $field$ = *|id|value_type|owner_pk|user_type
• $value$ = $string$|$integer$
• $string$: a simple string WITHOUT SPACES.
• $integer$: a simple integer.

Definition at line 941 of file value.h.

Member Function Documentation

isSatisfiedBy()

bool dht::Query::isSatisfiedBy

(

const Query &

q

)

const

Tell if the query is satisfied by another query.

msgpack_pack()

template<typename Packer>

void dht::Query::msgpack_pack ( Packer & pk ) const

inline

Definition at line 956 of file value.h.

toString()

std::string dht::Query::toString ( ) const

inline

Definition at line 964 of file value.h.

Friends And Related Symbol Documentation

operator<<

std::ostream & operator<< ( std::ostream & s, const dht::Query & q )

friend

Definition at line 970 of file value.h.

Member Data Documentation

none

bool dht::Query::none {false}

Definition at line 976 of file value.h.

QUERY_PARSE_ERROR

const std::string dht::Query::QUERY_PARSE_ERROR

static

Definition at line 924 of file value.h.

select

Select dht::Query::select {}

Definition at line 974 of file value.h.

where

Where dht::Query::where {}

Definition at line 975 of file value.h.

---

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

• /home/noptrix/ba/blackarch/packages/opendht-c/src/opendht/include/opendht/value.h