anonymous_namespace{relational_expression.cc}::StringJoiner Class Reference

A class for formatting a list into a string where elements are separated by a separator. More...

Public Member Functions
	StringJoiner (const char *separator)
std::ostream &	StartElement ()
	Start a new list element. More...
std::string	GetResult () const

Private Attributes
const char *	m_separator
	The separator between elements. More...
std::ostringstream	m_stream
	The string represenation of the list. More...
bool	m_first {true}
	True if we have not added any elements yet. More...

Detailed Description

A class for formatting a list into a string where elements are separated by a separator.

Constructor & Destructor Documentation

StringJoiner()

anonymous_namespace{relational_expression.cc}::StringJoiner::StringJoiner ( const char *  separator )

inlineexplicit

Member Function Documentation

GetResult()

std::string anonymous_namespace{relational_expression.cc}::StringJoiner::GetResult ( ) const

inline

StartElement()

std::ostream & anonymous_namespace{relational_expression.cc}::StringJoiner::StartElement ( )

inline

Start a new list element.

Add a separator if needed.

Returns

The ostream to which we add the representation of the element.

Member Data Documentation

m_first

bool anonymous_namespace{relational_expression.cc}::StringJoiner::m_first {true}

private

True if we have not added any elements yet.

m_separator

const char* anonymous_namespace{relational_expression.cc}::StringJoiner::m_separator

private

The separator between elements.

m_stream

std::ostringstream anonymous_namespace{relational_expression.cc}::StringJoiner::m_stream

private

The string represenation of the list.

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

• sql/join_optimizer/relational_expression.cc