DtNullVrfObjectPredicate Class Reference

DtNullVrfObjectPredicate; class that represents a null DtVrfObject predicate (always returns true) More...

Inheritance diagram for DtNullVrfObjectPredicate:

Public Member Functions
	DtNullVrfObjectPredicate ()
	constructor Note this predicate cannot be negated
virtual	~DtNullVrfObjectPredicate ()
	destructor
	DtNullVrfObjectPredicate (const DtNullVrfObjectPredicate &orig)
	copy constructor
DtNullVrfObjectPredicate &	operator= (const DtNullVrfObjectPredicate &orig)
	assignment operator
virtual DtVrfObjectPredicate *	clone () const
	clone function
Public Member Functions inherited from DtVrfObjectPredicate
	DtVrfObjectPredicate (bool negate=false)
	constructor
virtual	~DtVrfObjectPredicate ()
	destructor
	DtVrfObjectPredicate (const DtVrfObjectPredicate &orig)
	copy constructor
DtVrfObjectPredicate &	operator= (const DtVrfObjectPredicate &orig)
	assignment operator
bool	operator== (const DtVrfObjectPredicate &orig) const
	Equality operators used to compare predicates.
bool	operator!= (const DtVrfObjectPredicate &orig) const
virtual bool	negated () const
virtual void	setNegate (bool negate)
bool	isTrue (const DtVrfObject *vrfObject)
	This function evaluates the eval function (to be defined in derived classes) given a DtVrfObject and returns the result, negated if indicated.
virtual bool	canBeTrue (const DtVrfObject *vrfObject)
virtual bool	canBeFalse (const DtVrfObject *vrfObject)
virtual void	stringRep (std::ostream &str, int indentLevel=0) const

Protected Member Functions
virtual bool	eval (const DtVrfObject *vrfObject)
	The actual test to be applied to the given vrfObject.
Protected Member Functions inherited from DtVrfObjectPredicate
virtual bool	predicateEqual (const DtVrfObjectPredicate &orig) const
	Test if this instance of a predicate is equal to another.
virtual bool	canEvalTrue (const DtVrfObject *vrfObject)
virtual bool	canEvalFalse (const DtVrfObject *vrfObject)
virtual void	typeSpecificStringRep (std::ostream &str, int indentLevel) const
	Override in specific subclasses to print the predicate description to the stream.

Additional Inherited Members
Static Public Member Functions inherited from DtVrfObjectPredicate
static const DtVrfObjectPredicate &	nullPredicate ()
	Returns an instance of a DtNullVrfObjectPredicate.
Protected Attributes inherited from DtVrfObjectPredicate
bool	myNegated

Detailed Description

DtNullVrfObjectPredicate; class that represents a null DtVrfObject predicate (always returns true)

Instances of DtNullVrfObjectPredicate are a special case predicate used to that performs no actual test on a DtVrfObject. It always returns true.

Constructor & Destructor Documentation

DtNullVrfObjectPredicate::DtNullVrfObjectPredicate

(

)

constructor Note this predicate cannot be negated

virtual DtNullVrfObjectPredicate::~DtNullVrfObjectPredicate ( )

virtual

destructor

DtNullVrfObjectPredicate::DtNullVrfObjectPredicate

(

const DtNullVrfObjectPredicate &

orig

)

copy constructor

Member Function Documentation

DtNullVrfObjectPredicate& DtNullVrfObjectPredicate::operator=

(

const DtNullVrfObjectPredicate &

orig

)

assignment operator

virtual DtVrfObjectPredicate* DtNullVrfObjectPredicate::clone ( ) const

virtual

clone function

Implements DtVrfObjectPredicate.

virtual bool DtNullVrfObjectPredicate::eval ( const DtVrfObject *  vrfObject )

protectedvirtual

The actual test to be applied to the given vrfObject.

Returns

True.

Implements DtVrfObjectPredicate.

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

• /exports/nfedora7-1/nightly/docs/vrforcesDevelopment.tot/include/vrfobjcore/nullVrfObjectPredicate.h