A base class for encoders of SQL function expressions. More...

#include <SQLFunctionEncoder.h>

Inheritance diagram for te::da::SQLFunctionEncoder:

Public Member Functions
	SQLFunctionEncoder (const std::string &name)
	Constructor. More...

virtual void	toSQL (const Function &f, std::string &buff, SQLVisitor &v) const =0
	It encodes the function to a SQL notation. More...

virtual	~SQLFunctionEncoder ()
	Virtual Destructor. More...

Protected Attributes
std::string	m_name
	The alias to the function. More...

Detailed Description

A base class for encoders of SQL function expressions.

A Function is a named procedure that performs a distinct computation.

See also: Function, TemplateEncoder, BinaryOpEncoder, UnaryOpEncoder, FunctionEncoder

Definition at line 55 of file SQLFunctionEncoder.h.

Constructor & Destructor Documentation

◆ SQLFunctionEncoder()

te::da::SQLFunctionEncoder::SQLFunctionEncoder ( const std::string & name )

inline

Constructor.

Parameters

name	The function name.

Definition at line 64 of file SQLFunctionEncoder.h.

◆ ~SQLFunctionEncoder()

virtual te::da::SQLFunctionEncoder::~SQLFunctionEncoder ( )

inlinevirtual

Virtual Destructor.

Definition at line 67 of file SQLFunctionEncoder.h.

Member Function Documentation

◆ toSQL()

virtual void te::da::SQLFunctionEncoder::toSQL	(	const Function &	f,
		std::string &	buff,
		SQLVisitor &	v
	)		const

pure virtual

It encodes the function to a SQL notation.

Subclasses must provide implementations for the many ways a function can be called in a database native language. For example, the '+' operator is called A + B, while the ST_Intersects function is called ST_Intersects(A, B).

Notice that this method will visit the expression arguments of a function.

Parameters

f	The function to be translated to a SQL notation.
buff	The destination string buffer where the translation will be written.
v	The SQL visitor that will be used to visit the arguments expression.

Implemented in te::da::UnaryOpEncoder, te::da::TemplateEncoder, te::da::IsNullOpEncoder, te::da::FunctionNoArgsEncoder, te::da::FunctionEncoder, and te::da::BinaryOpEncoder.

Member Data Documentation

◆ m_name

std::string te::da::SQLFunctionEncoder::m_name

protected

The alias to the function.

Definition at line 88 of file SQLFunctionEncoder.h.

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

/home/castejon/castejon_files/develop/terralib5/git_release/src/terralib/dataaccess/query/SQLFunctionEncoder.h

Public Member Functions

Protected Attributes