class DfcDbSelection : public CorBase

A database selection class.

Inheritance:

Public Fields

static const int

KW_ANY $Id: DfcDbSelection

Public Methods

virtual void	addAndSelection ( const DfcDbSelection* aSelection )
virtual void	addOrSelection ( const DfcDbSelection* aSelection )
	DfcDbSelection ( const RWCString& aSelection )
	DfcDbSelection ( const DfcDbSelection& aRef )
	DfcDbSelection ( int aKeyword = KW_ANY, const RWCString& aValue = VAL_ANY, int anOperator = OP_LIKE )
virtual const RWCString&	getKey ( int aKeyword )
virtual int	getNextKey ()
virtual int	getNextOperator ()
virtual const RWCString&	getOperator ( int anOperator )
RWCString	getQualifiers ()
RWCString	getSelection ()
RWCString	getTables ()
CorBool	isSimpleSelection ()
DfcDbSelection&	operator= ( const DfcDbSelection& aRef )
void	select ( const RWCString& aSelection )
virtual void	select ( int aKeyword = KW_ANY, const RWCString& aValue = VAL_ANY, int anOperator = OP_LIKE )
static RWTValVector <RWCString>	setKeys ()
virtual	~DfcDbSelection ()

Public

	Purpose Query the table part of the current selection
	Purpose Query the next available keycode
	Purpose Query the select part of the current selection
	Purpose Check whether this selection is only made up of a selection string
	Purpose The d'tor
	Purpose Query the qualifier part of the current selection
	Purpose Query the next available operator

Protected Methods

void	addTablesAndSelection ( const DfcDbSelection* aSelection )
void	setQualifiers ( const RWCString& aValue )
void	setSelection ( const RWCString& aValue )
void	setTables ( const RWCString& aValue )

Private Fields

CorBool

mSelectOnly Purpose Set the keywords defined by this class

Private Methods

static RWTValVector <RWCString>

setOperators ()

Private

Purpose Set the operators defined by this class

static const int KW_ANY

$Id: DfcDbSelection.h,v 1.5 1997/05/07 07:45:26 mwiedmer Exp $

SYNOPSIS

    #include <DfcDbSelection.h>
  
    DfcDbSelection myObject;
  

DESCRIPTION
Using this class you can create selections on keyword-vlue pairs.

CAUTIONS
<optional>

EXAMPLES
<optional>

SEE ALSO
<optional>
CorBase

DfcDbSelection( int aKeyword = KW_ANY, const RWCString& aValue = VAL_ANY, int anOperator = OP_LIKE )

DfcDbSelection( const RWCString& aSelection )

DfcDbSelection( const DfcDbSelection& aRef )

DfcDbSelection& operator=( const DfcDbSelection& aRef )

virtual ~DfcDbSelection()

Purpose
The d'tor.

Preconditions

• Itemize this section if necessary. Remove itemization otherwise.

Exceptions

• Itemize this section if necessary. Remove itemization otherwise.

virtual void select( int aKeyword = KW_ANY, const RWCString& aValue = VAL_ANY, int anOperator = OP_LIKE )

void select( const RWCString& aSelection )

virtual void addAndSelection( const DfcDbSelection* aSelection )

virtual void addOrSelection( const DfcDbSelection* aSelection )

RWCString getSelection()

Purpose
Query the select part of the current selection.

Preconditions

• Itemize this section if necessary. Remove itemization otherwise.

Returns
This function returns the string representation of the select part of this selection.

Exceptions

• Itemize this section if necessary. Remove itemization otherwise.

CorBool isSimpleSelection()

Purpose
Check whether this selection is only made up of a selection string. (ie, no tables etc hvae been specified)

Preconditions

• Itemize this section if necessary. Remove itemization otherwise.

Returns
This function returns corFALSE if this is a complex selection.

Exceptions

• Itemize this section if necessary. Remove itemization otherwise.

RWCString getTables()

Purpose
Query the table part of the current selection.

Preconditions

• Itemize this section if necessary. Remove itemization otherwise.

Returns
This function returns the string representation of all the tables used by this selection.

Exceptions

• Itemize this section if necessary. Remove itemization otherwise.

RWCString getQualifiers()

Purpose
Query the qualifier part of the current selection.

Preconditions

• Itemize this section if necessary. Remove itemization otherwise.

Returns
This function returns the string representation of the qualifiers of this selection.

Exceptions

• Itemize this section if necessary. Remove itemization otherwise.

virtual int getNextOperator()

Purpose
Query the next available operator.

Preconditions

• Itemize this section if necessary. Remove itemization otherwise.

Returns
This function returns the next available operator.

Exceptions

• Itemize this section if necessary. Remove itemization otherwise.

virtual int getNextKey()

Purpose
Query the next available keycode.

Preconditions

• Itemize this section if necessary. Remove itemization otherwise.

Returns
This function returns the next available keycode.

Exceptions

• Itemize this section if necessary. Remove itemization otherwise.

virtual const RWCString& getKey( int aKeyword )

virtual const RWCString& getOperator( int anOperator )

void setSelection( const RWCString& aValue )

void setTables( const RWCString& aValue )

void setQualifiers( const RWCString& aValue )

void addTablesAndSelection( const DfcDbSelection* aSelection )

static RWTValVector <RWCString> setOperators()

Purpose
Set the operators defined by this class.

Preconditions

• Itemize this section if necessary. Remove itemization otherwise.

Returns
This function returns a vector with all the operators matching the operator codes.

Exceptions

• Itemize this section if necessary. Remove itemization otherwise.

static RWTValVector <RWCString> setKeys()

CorBool mSelectOnly

Purpose
Set the keywords defined by this class.

Preconditions

• Itemize this section if necessary. Remove itemization otherwise.

Returns
This function returns a vector with all the keywords matching the keyword codes.

Exceptions

• Itemize this section if necessary. Remove itemization otherwise.

Direct child classes:

QucDbSelection

alphabetic index hierarchy of classes

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