Dv::Sql::Row< database_table >::Set Class Reference

A set of rows of this table. More...

#include <row.h>

Inheritance diagram for Dv::Sql::Row< database_table >::Set:

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Collaboration diagram for Dv::Sql::Row< database_table >::Set:

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List of all members.

Public Member Functions
	Set (SelectExp select_exp, const std::string &rest="") throw (std::logic_error)
	Initialize a set using the result of a query.
	Set (Row< database_table > &r, const std::string &rest="") throw (std::logic_error)
	Initialize the set with all objects that match the dirty column values in r.
template<typename Target >
	Set (const Target &target, const Dv::Sql::Reference &reference) throw (std::logic_error)
	Initialize a set with all source objects that are linked to a target object via a reference.

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Detailed Description

template<Dv::Sql::Table::Ref & database_table>
class Dv::Sql::Row< database_table >::Set

A set of rows of this table.

Examples:

example-row.C.

Definition at line 185 of file row.h.

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Constructor & Destructor Documentation

template<Dv::Sql::Table::Ref & database_table>

Dv::Sql::Row< database_table >::Set::Set	(	SelectExp	select_exp,
		const std::string &	rest = ""
	)			throw (std::logic_error) [inline]

Initialize a set using the result of a query.

The query has the following form.

 select * from database_table where select_exp rest

Example

 Dv::Sql::Table::Ref customer;
 typedef Dv::Sql::Row<customer> Customer;
 std::string zip;
 // list of customers in area ordered by age
 Customer::Set customers(Customer::zip = zip and age > 10, "order by age");

Parameters:

	select_exp	condition to be used in the query text
	rest	suffix of the query text, may be 0

Exceptions:

std::logic_error

if executing the query fails

Definition at line 204 of file row.h.

template<Dv::Sql::Table::Ref & database_table>

Dv::Sql::Row< database_table >::Set::Set	(	Row< database_table > &	r,
		const std::string &	rest = ""
	)			throw (std::logic_error) [inline]

Initialize the set with all objects that match the dirty column values in r.

Parameters:

	r	object to match
	rest	optional suffix for the constructed query

Exceptions:

std::logic_error

iff executing the query fails

See also:

Object::match

Definition at line 215 of file row.h.

template<Dv::Sql::Table::Ref & database_table>

template<typename Target >

Dv::Sql::Row< database_table >::Set::Set	(	const Target &	target,
		const Dv::Sql::Reference &	reference
	)			throw (std::logic_error) [inline]

Initialize a set with all source objects that are linked to a target object via a reference.

Parameters:

	target	object
	reference	to follow (in the inverse direction: from taregt to source)

Definition at line 226 of file row.h.

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

• row.h