Reference to a read-only FIX field value. More...

Public Member Functions
	FieldValueRef ()
	Uninitialized value.

	FieldValueRef (const FieldValueRef &)
	Shallow copy from another one.

	operator bool () const
	Indicated whether the instance refers to a valid value. More...

	operator std::string () const
	Return string presentation of the value being referenced. More...

bool	operator== (const FieldValueRef &) const
	Compares with another instance for equality.

bool	operator!= (const FieldValueRef &) const
	Compares with another instance for inequality.

bool	operator== (const StringRef &) const
	Compares string presentation for equality with given text reference. More...

bool	operator!= (const StringRef &) const
	Compares string presentation for equality with given text reference. More...

bool	toNumber (Int32 &) const
	Converts field value into a whole number. More...

bool	toNumber (UInt32 &) const
	Converts field value into a whole number. More...

bool	toNumber (Int64 &) const
	Converts field value into a whole number. More...

bool	toNumber (UInt64 &) const
	Converts field value into a whole number. More...

bool	toNumber (Decimal &) const
	Converts field value into a whole number. More...

bool	toTimestamp (Timestamp &, SinceEpochUnit) const
	Converts field value into Timestamp. More...

bool	toStringRef (StringRef &) const
	If value represents text, returns reference to it. More...

bool	toChar (char &) const
	If value represent one-char text, copies it into given variable. More...

bool	toGroup (Group &) const
	If repeating group is associated with field, allows to get instance of it. More...

void	toString (std::string &) const
	Appends copy of referenced value text presentation to the std::string. More...

std::string	toString () const
	Return string presentation of field value.

FieldValueRef &	operator= (const FieldValueRef &)
	Updates instance to refer to another field value. More...

Friends
class	MessageOperator

Detailed Description

Reference to a read-only FIX field value.

Reference may refers to a valid field value or to nothing. 'operator bool()' is exposed to check whether instance refers to existent field value.

Member Function Documentation

operator bool ( ) const

Indicated whether the instance refers to a valid value.

operator std::string ( ) const

inline

Return string presentation of the value being referenced.

bool operator!= ( const StringRef & ) const

Compares string presentation for equality with given text reference.

FieldValueRef& operator= ( const FieldValueRef & )

Updates instance to refer to another field value.

Warning: Does NOT perform deep copy of field values. Just updates reference to point to value of other field.

bool operator== ( const StringRef & ) const

Compares string presentation for equality with given text reference.

bool toChar ( char & ) const

If value represent one-char text, copies it into given variable.

Returns: false if value referenced by instance can't be converted into value of target type.

Note: conversion of instance referencing to nothing always fails.

bool toGroup ( Group & ) const

If repeating group is associated with field, allows to get instance of it.

Returns: false if no group is associated with field.

bool toNumber ( Int32 & ) const