casacore::TableExprGroupFuncBool Class Reference

Abstract base class for aggregate functions giving a bool scalar. More...

#include <ExprGroup.h>

Inheritance diagram for casacore::TableExprGroupFuncBool:

Public Member Functions
	TableExprGroupFuncBool (TableExprNodeRep *node)
	TableExprGroupFuncBool (TableExprNodeRep *node, Bool initValue)
virtual	~TableExprGroupFuncBool ()
virtual Bool	getBool (const vector< TableExprId > &)
	Get the aggregated value.
Protected Attributes
Bool	itsValue

Detailed Description

Abstract base class for aggregate functions giving a bool scalar.

Intended use:

Internal

Review Status

Test programs:: tExprGroup

Synopsis

This class is derived from TableExprGroupFuncBase and act as the abstract base class for aggregate functions resulting in a bool scalar.
Derived classes can use itsValue to contain the aggregated value. It that case they do not need to implement the get function.

Definition at line 469 of file ExprGroup.h.

Constructor & Destructor Documentation

casacore::TableExprGroupFuncBool::TableExprGroupFuncBool ( TableExprNodeRep * node ) [inline, explicit]

Definition at line 472 of file ExprGroup.h.

casacore::TableExprGroupFuncBool::TableExprGroupFuncBool	(	TableExprNodeRep *	node,
		Bool	initValue
	)			`[inline]`

Definition at line 475 of file ExprGroup.h.

virtual casacore::TableExprGroupFuncBool::~TableExprGroupFuncBool ( ) [virtual]

Member Function Documentation

virtual Bool casacore::TableExprGroupFuncBool::getBool ( const vector< TableExprId > & ) [virtual]

Get the aggregated value.

Immediate classes can return the already calculated value, while lazy classes will get the values of all rows given by the TableExprIds and do the aggregation.

Reimplemented from casacore::TableExprGroupFuncBase.

Member Data Documentation

Bool casacore::TableExprGroupFuncBool::itsValue [protected]

Definition at line 482 of file ExprGroup.h.

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

casacore/tables/TaQL/ExprGroup.h