casacore::TableExprGroupFirst Class Reference

Class derived from TableExprGroupFuncBase for the first value in a group. More...

#include <ExprGroup.h>

Inheritance diagram for casacore::TableExprGroupFirst:

Public Member Functions
	TableExprGroupFirst (TableExprNodeRep *node)
virtual	~TableExprGroupFirst ()
virtual void	apply (const TableExprId &id)
	Get the operand's value for the given row and apply it to the aggregation. More...
virtual Bool	getBool (const vector< TableExprId > &)
	Get the aggregated value. More...
virtual Int64	getInt (const vector< TableExprId > &)
virtual Double	getDouble (const vector< TableExprId > &)
virtual DComplex	getDComplex (const vector< TableExprId > &)
virtual MVTime	getDate (const vector< TableExprId > &)
virtual String	getString (const vector< TableExprId > &)
virtual MArray< Bool >	getArrayBool (const vector< TableExprId > &)
virtual MArray< Int64 >	getArrayInt (const vector< TableExprId > &)
virtual MArray< Double >	getArrayDouble (const vector< TableExprId > &)
virtual MArray< DComplex >	getArrayDComplex (const vector< TableExprId > &)
virtual MArray< MVTime >	getArrayDate (const vector< TableExprId > &)
virtual MArray< String >	getArrayString (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	finish ()
	If needed, finish the aggregation. More...
virtual CountedPtr< vector < TableExprId > >	getIds () const
	Get the assembled TableExprIds of a group. More...

Protected Attributes
TableExprId	itsId
Protected Attributes inherited from casacore::TableExprGroupFuncBase
TableExprNodeRep *	itsNode
TableExprNodeRep *	itsOperand
uInt	itsSeqnr

Detailed Description

Class derived from TableExprGroupFuncBase for the first value in a group.

Intended use:

Internal

Review Status

Test programs:

tExprGroup

Synopsis

This class keeps the TableExprId of the first value in a group. The 'getXXX' functions get the value for that TableExprId.

Definition at line 285 of file ExprGroup.h.

Constructor & Destructor Documentation

casacore::TableExprGroupFirst::TableExprGroupFirst ( TableExprNodeRep *  node )

explicit

virtual casacore::TableExprGroupFirst::~TableExprGroupFirst ( )

virtual

Member Function Documentation

virtual void casacore::TableExprGroupFirst::apply ( const TableExprId &  id )

virtual

Get the operand's value for the given row and apply it to the aggregation.

This function should not be called for lazy classes.

Implements casacore::TableExprGroupFuncBase.

Reimplemented in casacore::TableExprGroupLast.

virtual MArray<Bool> casacore::TableExprGroupFirst::getArrayBool ( const vector< TableExprId > &  )

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual MArray<MVTime> casacore::TableExprGroupFirst::getArrayDate ( const vector< TableExprId > &  )

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual MArray<DComplex> casacore::TableExprGroupFirst::getArrayDComplex ( const vector< TableExprId > &  )

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual MArray<Double> casacore::TableExprGroupFirst::getArrayDouble ( const vector< TableExprId > &  )

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual MArray<Int64> casacore::TableExprGroupFirst::getArrayInt ( const vector< TableExprId > &  )

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual MArray<String> casacore::TableExprGroupFirst::getArrayString ( const vector< TableExprId > &  )

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual Bool casacore::TableExprGroupFirst::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.

virtual MVTime casacore::TableExprGroupFirst::getDate ( const vector< TableExprId > &  )

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual DComplex casacore::TableExprGroupFirst::getDComplex ( const vector< TableExprId > &  )

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

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

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

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

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual String casacore::TableExprGroupFirst::getString ( const vector< TableExprId > &  )

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

Member Data Documentation

TableExprId casacore::TableExprGroupFirst::itsId

protected

Definition at line 304 of file ExprGroup.h.

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

• tables/TaQL/ExprGroup.h