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look::DbField Class Reference

Class representing a field of data. More...

#include <dbfield.h>

List of all members.

Public Methods
	DbField (LOOK_STMT theStmt, int theColumn)
	Constructor. More...
virtual	~DbField ()
	Destructor.
const LookTypeBase*	GetValue (void) const
	Get the value of the data. More...
LookString	GetAsString (void) const
	Get the data as a string. More...
LookInteger	GetInteger (void) const
	Get the data as a LookInteger. More...
LookMoney	GetMoney (void) const
	Get the data as a LookMoney. More...
LookDateTime	GetDateTime (void) const
	Get the data as a LookDateTime. More...
LookFloat	GetFloat (void) const
	Get the data as a LookFloat. More...
LookNumeric	GetNumeric (void) const
	Get the data as a LookNumeric. More...
LookRawData	GetRawData (void) const
	Get the data as a LookRawData. More...
bool	IsNull () const
	Is the field null? More...
Static Public Methods
void	SetFixEmptyStrings (bool theFlag)
bool	SetFixEmptyStringsAuto (void)
	Set itFixesEmptyStrings (see constructor for use). More...

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Detailed Description

Class representing a field of data.

This class represents a field of data (intersection of row and column). A DbRow has some of these, and is probably the only class which should construct them. A field can supply its data as various types

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Constructor & Destructor Documentation

look::DbField::DbField ( LOOK_STMT theStmt, int theColumn )

Constructor. Constructor. This obtains the data from the interface layer and converts it into the appropriate type. If itFixesEmptyStrings, a string of " " is converted to an empty string. (SQL Server doesn't understand empty strings). Parameters: theStmt   Handle to get the data from the interface layer. (cursor). theColumn   Column number. Returns: None (constructor)

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Member Function Documentation

LookString look::DbField::GetAsString ( void ) const

Get the data as a string. Get the data as a string. Floating point values are rounded to 3dp, dates use the default conversion specified in LookDateTime, money uses LookMoney::GetSimpleString(). If the data is not one of string, integer, float, date/time, money, numeric or raw data, an exception is thrown. This should be pretty unlikely. Returns: The data, converted.

LookDateTime look::DbField::GetDateTime ( void ) const

Get the data as a LookDateTime. Get the data as a LookDateTime. If the data is not date/time, an exception is thrown. Note date and time data is all stored as LookDateTime. Returns: The integer.

LookFloat look::DbField::GetFloat ( void ) const

Get the data as a LookFloat. Get the data as a LookFloat. If the data is not a float or numeric, an exception is thrown. Returns: The integer.

LookInteger look::DbField::GetInteger ( void ) const

Get the data as a LookInteger. Get the data as a LookInteger. If the data is not integral or numeric, an exception is thrown. Returns: The integer.

LookMoney look::DbField::GetMoney ( void ) const

Get the data as a LookMoney. Get the data as a LookMomey. If the data is not money or numeric, an exception is thrown. Returns: The integer.

LookNumeric look::DbField::GetNumeric ( void ) const

Get the data as a LookNumeric. Get the data as a LookNumeric. If the data is not integral, money or numeric, an exception is thrown. (float would need a precision). Returns: The integer.

LookRawData look::DbField::GetRawData ( void ) const

Get the data as a LookRawData. Get the data as a LookRawData. If the data is not raw (binary) data, an exception is thrown. Returns: The integer.

const LookTypeBase * look::DbField::GetValue ( void ) const

Get the value of the data. Get the value of the data. Returns: A pointer to a LookTypeBase, which will remain valid as long as the DbField exists.

bool look::DbField::IsNull ( void ) const

Is the field null? Is the field null? Returns: true if it is null.

bool look::DbField::SetFixEmptyStringsAuto ( void ) [static]

Set itFixesEmptyStrings (see constructor for use). Set itFixesEmptyStrings according to the database type. (Currently only true for SQL Server) The global connection must have been set before using this (DbConnection::SetGlobalConnection()). Returns: true for success.

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

• dbfield.h
• dbfield.cpp

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