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casacore::TableExprGroupFuncDouble Class Reference

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

#include <ExprGroup.h>

Inheritance diagram for casacore::TableExprGroupFuncDouble:
casacore::TableExprGroupFuncBase casacore::TableExprGroupFractileArrayDouble casacore::TableExprGroupFractileDouble casacore::TableExprGroupMaxArrayDouble casacore::TableExprGroupMaxDouble casacore::TableExprGroupMeanArrayDouble casacore::TableExprGroupMeanDouble casacore::TableExprGroupMinArrayDouble casacore::TableExprGroupMinDouble casacore::TableExprGroupProductArrayDouble casacore::TableExprGroupProductDouble casacore::TableExprGroupRmsArrayDouble casacore::TableExprGroupRmsDouble casacore::TableExprGroupSumArrayDouble casacore::TableExprGroupSumDouble casacore::TableExprGroupSumSqrArrayDouble casacore::TableExprGroupSumSqrDouble casacore::TableExprGroupVarianceArrayDComplex casacore::TableExprGroupVarianceArrayDouble casacore::TableExprGroupVarianceDComplex casacore::TableExprGroupVarianceDouble

Public Member Functions

 TableExprGroupFuncDouble (TableExprNodeRep *node, Double initValue=0)
virtual ~TableExprGroupFuncDouble ()
virtual Double getDouble (const vector< TableExprId > &)
- Public Member Functions inherited from casacore::TableExprGroupFuncBase
 TableExprGroupFuncBase (TableExprNodeRep *node)
 Construct from the TaQL aggregation node. More...
virtual ~TableExprGroupFuncBase ()
virtual Bool isLazy () const
 Does the aggregate function use lazy semantics? The default implementation returns False. More...
uInt seqnr () const
 Get the function's sequence nr. More...
void setSeqnr (uInt seqnr)
 Set the function's sequence nr. More...
virtual void apply (const TableExprId &id)=0
 Get the operand's value for the given row and apply it to the aggregation. More...
virtual void finish ()
 If needed, finish the aggregation. More...
virtual CountedPtr< vector
< TableExprId > > 
getIds () const
 Get the assembled TableExprIds of a group. More...
virtual Bool getBool (const vector< TableExprId > &=vector< TableExprId >())
 Get the aggregated value. More...
virtual Int64 getInt (const vector< TableExprId > &=vector< TableExprId >())
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< BoolgetArrayBool (const vector< TableExprId > &=vector< TableExprId >())
virtual MArray< Int64getArrayInt (const vector< TableExprId > &=vector< TableExprId >())
virtual MArray< DoublegetArrayDouble (const vector< TableExprId > &=vector< TableExprId >())
virtual MArray< DComplex > getArrayDComplex (const vector< TableExprId > &=vector< TableExprId >())
virtual MArray< MVTimegetArrayDate (const vector< TableExprId > &=vector< TableExprId >())
virtual MArray< StringgetArrayString (const vector< TableExprId > &=vector< TableExprId >())

Protected Attributes

Double itsValue
- Protected Attributes inherited from casacore::TableExprGroupFuncBase
uInt itsSeqnr

Detailed Description

Abstract base class for aggregate functions giving a double scalar.

Intended use:


Review Status

Test programs:


This class is derived from TableExprGroupFuncBase and acts as the abstract base class for aggregate functions resulting in a double 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 525 of file ExprGroup.h.

Constructor & Destructor Documentation

casacore::TableExprGroupFuncDouble::TableExprGroupFuncDouble ( TableExprNodeRep node,
Double  initValue = 0 

Definition at line 528 of file ExprGroup.h.

virtual casacore::TableExprGroupFuncDouble::~TableExprGroupFuncDouble ( )

Member Function Documentation

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

Member Data Documentation

Double casacore::TableExprGroupFuncDouble::itsValue

Definition at line 536 of file ExprGroup.h.

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