ExceptionImpl< StdExcept, MessageType > Class Template Reference

Concrete template class which implements Exception's pure virtual methods. More...

#include <keyvalue/sys/exception/Exception.h>

Inheritance diagram for ExceptionImpl< StdExcept, MessageType >:

List of all members.

Public Member Functions
const Message &	getMessage () const
	Gets the inner Message.
const char *	what () const throw ()
	Gets a C string describing the exception.
template<typename DataType >
ExceptionImpl &	operator& (const DataType &data)
	Appends formated data to a given exception.
Private Attributes
MessageType	message_
string	str_

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Detailed Description

template<typename StdExcept, typename MessageType>
class keyvalue::exception::ExceptionImpl< StdExcept, MessageType >

Concrete template class which implements Exception's pure virtual methods.

Parameters:

	StdExcept	: (template parameter) Standard exception class that this class derives from (either std::runtime_error or std::logic_error);
	MessageType	: (template parameter) Type of inner Message object that might be gotten by getMessage().

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Member Function Documentation

const Message & getMessage

(

)

const [virtual]

Gets the inner Message.

Implements Exception.

const char * what

(

)

const throw () [virtual]

Gets a C string describing the exception.

Implements Exception.

ExceptionImpl< StdExcept, MessageType > & operator&

(

const DataType &

data

)

Appends formated data to a given exception.

Recall that this class has a Message member. This method appends data to that member (see Message::operator&).

The typical use for this method is as follows:

 if (price <= 0.0)
   throw RuntimeError() & "Invalid price. Expecting a positive number. Got " & price;

Parameters:

	DataType	: (template parameter) The type of data to be appended. This parameter is automatically deduced by the compiler and may be ignored by the user.
	exception	: The exception that data should be appended to;
	data	: The data to be appended.

Returns:

The exception with appended data.