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.
virtual void	apply (const TableExprId &id)
	Get the operand's value for the given row and apply it to the aggregation.
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.
virtual	~TableExprGroupFuncBase ()
	TableExprGroupFuncBase (const TableExprGroupFuncBase &)=delete
	Copying is not needed, thus not allowed.
TableExprGroupFuncBase &	operator= (const TableExprGroupFuncBase &)=delete
uInt	seqnr () const
	Get the function's sequence nr.
void	setSeqnr (uInt seqnr)
	Set the function's sequence nr.
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 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 375 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 390 of file ExprGroup.h.

References casacore::IPosition::append(), casacore::ArrayIterator< T >::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 >::next(), casacore::Array< T >::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