siena::value Class Reference

interface of a generic value in the Siena data model. More...

#include <types.h>

Inheritance diagram for siena::value:

Public Member Functions
virtual	~value ()
	virtual destructor
virtual type_id	type () const =0
	returns the actual type identifier of this value. More...
virtual int_t	int_value () const =0
	returns this value as an integer. More...
virtual string_t	string_value () const =0
	returns this value as a string. More...
virtual bool_t	bool_value () const =0
	returns this value as a boolean. More...
virtual double_t	double_value () const =0
	returns this value as a double. More...

Detailed Description

interface of a generic value in the Siena data model.

A value is a typed value.

Examples:

simple_types.cc.

Member Function Documentation

virtual bool_t siena::value::bool_value ( ) const

pure virtual

returns this value as a boolean.

This method returns this value as a boolean if the actual type (returned by type()) is bool_id. The result is undefined if the actual type is not bool_id.

Examples:

message_iteration.cc.

virtual double_t siena::value::double_value ( ) const

pure virtual

returns this value as a double.

This method returns this value as a boolean if the actual type (returned by type()) is double_id. The result is undefined if the actual type is not double_id.

Examples:

message_iteration.cc.

virtual int_t siena::value::int_value ( ) const

pure virtual

returns this value as an integer.

This method returns this value as an integer if the actual type (returned by type()) is int_id. The result is undefined if the actual type is not int_id.

Examples:

message_iteration.cc.

virtual string_t siena::value::string_value ( ) const

pure virtual

returns this value as a string.

This method returns this value as a string if the actual type (returned by type()) is type_id::string_t. The result is undefined if the actual type is not string_t.

Examples:

message_iteration.cc.

virtual type_id siena::value::type ( ) const

pure virtual

returns the actual type identifier of this value.

See Also

see type_id.

Examples:

message_iteration.cc.