casacore::TableExprGroupAggr Class Reference

Class collecting the arrays in a group. More...

#include <ExprGroup.h>

Public Member Functions
	TableExprGroupAggr (TableExprNodeRep *node)
virtual	~TableExprGroupAggr ()
virtual Bool	isLazy () const
	Does the aggregate function use lazy semantics? The default implementation returns False. More...
virtual void	apply (const TableExprId &id)
	Get the operand's value for the given row and apply it to the aggregation. More...
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 ()
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...
virtual Bool	getBool (const vector< TableExprId > &=vector< TableExprId >())
	Get the aggregated value. More...
virtual Int64	getInt (const vector< TableExprId > &=vector< TableExprId >())
virtual Double	getDouble (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 >())

Protected Member Functions
template<typename T >
MArray< T >	getArray (const vector< TableExprId > &ids)

Additional Inherited Members
Protected Attributes inherited from casacore::TableExprGroupFuncBase
TableExprNodeRep *	itsNode
TableExprNodeRep *	itsOperand
uInt	itsSeqnr

Detailed Description

Class collecting the arrays in a group.

Intended use:

Internal

Review Status

Test programs:

tExprGroup

Synopsis

This class collects the non-empty arrays in a group into an array with one more axis. All arrays (if not empty) must have the same shape.

Definition at line 378 of file ExprGroup.h.

Constructor & Destructor Documentation

TableExprGroupAggr()

casacore::TableExprGroupAggr::TableExprGroupAggr ( TableExprNodeRep *  node )

explicit

~TableExprGroupAggr()

virtual casacore::TableExprGroupAggr::~TableExprGroupAggr ( )

virtual

Member Function Documentation

apply()

virtual void casacore::TableExprGroupAggr::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.

getArray()

template<typename T >

MArray<T> casacore::TableExprGroupAggr::getArray ( const vector< TableExprId > &  ids )

inlineprotected

Return scalar values as a Vector.

Array values are returned as an array with one more axis. Use the first non-null value to determine the shape and if masked.

All arrays are null.

Definition at line 393 of file ExprGroup.h.

References casacore::IPosition::append(), casacore::ArrayIterator< T, Alloc >::array(), casacore::MArray< T >::array(), casacore::False, casacore::TableExprNodeRep::get(), casacore::MArrayBase::hasMask(), casacore::MArrayBase::isNull(), casacore::TableExprGroupFuncBase::itsOperand, casacore::MArrayBase::mask(), casacore::mask(), casacore::MArrayBase::ndim(), casacore::ArrayIterator< T, Alloc >::next(), casacore::Array< T, Alloc >::resize(), casacore::MArrayBase::shape(), casacore::IPosition::size(), casacore::True, casacore::TableExprNodeRep::valueType(), and casacore::TableExprNodeRep::VTScalar.

getArrayBool()

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

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

getArrayDate()

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

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

getArrayDComplex()

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

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

getArrayDouble()

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

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

getArrayInt()

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

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

getArrayString()

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

virtual

Reimplemented from casacore::TableExprGroupFuncBase.

isLazy()

virtual Bool casacore::TableExprGroupAggr::isLazy ( ) const

virtual

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

Reimplemented from casacore::TableExprGroupFuncBase.

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

• tables/TaQL/ExprGroup.h