casacore::TableExprGroupExprId Class Reference

Class derived from TableExprGroupFuncBase collecting the ids in a group. More...

#include <ExprGroup.h>

Inheritance diagram for casacore::TableExprGroupExprId:

List of all members.

Public Member Functions
	TableExprGroupExprId (TableExprNodeRep *node)
virtual	~TableExprGroupExprId ()
virtual Bool	isLazy () const
	Does the aggregate function use lazy semantics? The default implementation returns False.
virtual void	apply (const TableExprId &id)
	Get the operand's value for the given row and apply it to the aggregation.
virtual CountedPtr< vector < TableExprId > >	getIds () const
	Get the assembled TableExprIds of a group.
Private Attributes
CountedPtr< vector< TableExprId > >	itsIds

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Detailed Description

Class derived from TableExprGroupFuncBase collecting the ids in a group.

Intended use:

Internal

Review Status

Test programs:

tExprGroup

Synopsis

This class keeps all TableExprIds in a group. It is meant for lazy aggregation classes which use the collected TableExprIds in their 'getXXX' functions.

Definition at line 337 of file ExprGroup.h.

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Constructor & Destructor Documentation

casacore::TableExprGroupExprId::TableExprGroupExprId

(

TableExprNodeRep *

node

)

[explicit]

virtual casacore::TableExprGroupExprId::~TableExprGroupExprId

(

)

[virtual]

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Member Function Documentation

virtual void casacore::TableExprGroupExprId::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.

virtual CountedPtr<vector<TableExprId> > casacore::TableExprGroupExprId::getIds

(

)

const [virtual]

Get the assembled TableExprIds of a group.

It is specifically meant for TableExprGroupExprId used for lazy aggregation.

Reimplemented from casacore::TableExprGroupFuncBase.

virtual Bool casacore::TableExprGroupExprId::isLazy

(

)

const [virtual]

Does the aggregate function use lazy semantics? The default implementation returns False.

Reimplemented from casacore::TableExprGroupFuncBase.

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Member Data Documentation

CountedPtr<vector<TableExprId> > casacore::TableExprGroupExprId::itsIds [private]

Definition at line 346 of file ExprGroup.h.

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

• casacore/tables/TaQL/ExprGroup.h