te::da::SQLFunctionEncoder Class Reference

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

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

inline

Constructor.

Parameters

name	The function name.

Definition at line 64 of file SQLFunctionEncoder.h.

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

inlinevirtual

Virtual Destructor.

Definition at line 67 of file SQLFunctionEncoder.h.

Member Function Documentation

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::TemplateEncoder, te::da::FunctionEncoder, te::da::BinaryOpEncoder, te::da::UnaryOpEncoder, and te::da::FunctionNoArgsEncoder.

Member Data Documentation

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

protected

The alias to the function.

Definition at line 88 of file SQLFunctionEncoder.h.

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

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