BALL::Selector Class Reference
[Kernel Predicates]

Atom Selection from BALL Expression. More...

#include <selector.h>

Inheritance diagram for BALL::Selector:

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Public Member Functions
Constructors and Destructors
	Selector ()
	Default constructor.
	Selector (const Selector &selector)
	Copy constructor.
	Selector (const String &expression_string)
	Construct a Selector with a string.
virtual	~Selector ()
	Destructor.
Assignment
virtual void	clear ()
	Clear method.
Selector &	operator= (const Selector &selector)
	Assignment operator.
Predicates
bool	operator== (const Selector &selector) const
	Equality.
Processor related methods
virtual Processor::Result	operator() (Composite &composite)
	Access operator.
virtual bool	start ()
	Processor start method.
Accessors
Size	getNumberOfSelectedAtoms () const
	Return the number of atoms selected during the last application.
List< Atom * > &	getSelectedAtoms ()
	Return a list containing pointers to all selected Atoms.
void	setExpression (const Expression &expression)
	Define the expression.
const Expression &	getExpression () const
	Return the expression.
Protected Attributes
List< Atom * >	selected_atoms_
Expression	expression_

Detailed Description

Atom Selection from BALL Expression.

BALL::Selector::Selector ( const String & expression_string )

Construct a Selector with a string.

The selector's expression is set to expression_string.

virtual Processor::Result BALL::Selector::operator() ( Composite & composite ) [virtual]

Access operator.

If the given Composite is an Atom and the current expression_ is fulfilled for that atom, select it by calling Composite::select .

virtual bool BALL::Selector::start ( ) [virtual]

Processor start method.

This method is needed to reset the internal counter for the number of selected atoms.