casacore::TableExprGroupFuncInt Class Reference

Abstract base class for aggregate functions giving an integer scalar. More...

#include <ExprGroup.h>

Public Member Functions
	TableExprGroupFuncInt (TableExprNodeRep *node, Int64 initValue=0)
virtual	~TableExprGroupFuncInt ()
virtual Int64	getInt (const vector< TableExprId > &)
virtual Double	getDouble (const vector< TableExprId > &)
Public Member Functions inherited from casacore::TableExprGroupFuncBase
	TableExprGroupFuncBase (TableExprNodeRep *node)
	Construct from the TaQL aggregation node.
virtual	~TableExprGroupFuncBase ()
	TableExprGroupFuncBase (const TableExprGroupFuncBase &)=delete
	Copying is not needed, thus not allowed.
TableExprGroupFuncBase &	operator= (const TableExprGroupFuncBase &)=delete
virtual Bool	isLazy () const
	Does the aggregate function use lazy semantics?
uInt	seqnr () const
	Get the function's sequence nr.
void	setSeqnr (uInt seqnr)
	Set the function's sequence nr.
virtual void	apply (const TableExprId &id)=0
	Get the operand's value for the given row and apply it to the aggregation.
virtual void	finish ()
	If needed, finish the aggregation.
virtual std::shared_ptr< vector< TableExprId > >	getIds () const
	Get the assembled TableExprIds of a group.
virtual Bool	getBool (const vector< TableExprId > &=vector< TableExprId >())
	Get the aggregated value.
virtual DComplex	getDComplex (const vector< TableExprId > &=vector< TableExprId >())
virtual MVTime	getDate (const vector< TableExprId > &=vector< TableExprId >())
virtual String	getString (const vector< TableExprId > &=vector< TableExprId >())
virtual MArray< Bool >	getArrayBool (const vector< TableExprId > &=vector< TableExprId >())
virtual MArray< Int64 >	getArrayInt (const vector< TableExprId > &=vector< TableExprId >())
virtual MArray< Double >	getArrayDouble (const vector< TableExprId > &=vector< TableExprId >())
virtual MArray< DComplex >	getArrayDComplex (const vector< TableExprId > &=vector< TableExprId >())
virtual MArray< MVTime >	getArrayDate (const vector< TableExprId > &=vector< TableExprId >())
virtual MArray< String >	getArrayString (const vector< TableExprId > &=vector< TableExprId >())

Protected Attributes
Int64	itsValue
Protected Attributes inherited from casacore::TableExprGroupFuncBase
TableExprNodeRep *	itsNode
TableExprNodeRep *	itsOperand
uInt	itsSeqnr

Detailed Description

Abstract base class for aggregate functions giving an integer scalar.

Intended use:

Internal

Review Status

Test programs:

tExprGroup

Synopsis

This class is derived from TableExprGroupFuncBase and acts as the abstract base class for aggregate functions resulting in an integer 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 495 of file ExprGroup.h.

Constructor & Destructor Documentation

TableExprGroupFuncInt()

casacore::TableExprGroupFuncInt::TableExprGroupFuncInt ( TableExprNodeRep * node, Int64 initValue = 0 )

inlineexplicit

Definition at line 498 of file ExprGroup.h.

References itsValue, and casacore::TableExprGroupFuncBase::TableExprGroupFuncBase().

~TableExprGroupFuncInt()

virtual casacore::TableExprGroupFuncInt::~TableExprGroupFuncInt ( )

virtual

Member Function Documentation

getDouble()

virtual Double casacore::TableExprGroupFuncInt::getDouble ( const vector< TableExprId > & )

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

getInt()

virtual Int64 casacore::TableExprGroupFuncInt::getInt ( const vector< TableExprId > & )

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

Member Data Documentation

itsValue

Int64 casacore::TableExprGroupFuncInt::itsValue

protected

Definition at line 506 of file ExprGroup.h.

Referenced by casacore::TableExprGroupCountAll::setResult(), and TableExprGroupFuncInt().

---

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

• tables/TaQL/ExprGroup.h