casacore::TabVecRep< T > Class Template Reference

Templated base class for table vectors. More...

#include <TVec.h>

Inheritance diagram for casacore::TabVecRep< T >:

Public Member Functions
	TabVecRep ()
	Create empty table vector.
virtual	~TabVecRep ()
	Destruct the object.
uInt	ndim () const
	Get nr of dimensions.
uInt	nelements () const
	Get nr of elements (ie.
Bool	conform (const TabVecRep< T > &) const
	Test if vector shape conforms another table vector.
Bool	conform (const Vector< T > &) const
	Test if vector shape conforms another vector.
Bool	ok () const
	Check internal consistency.
TabVecRep< T > *	link ()
	Increments the reference count.
uInt	unlink ()
	Decrements the reference count and returns the resulting count.
TabVecTag	getTag () const
	Get the tag (the type of vector).
virtual T	value (uInt index) const =0
	Get a value.
virtual void	getVal (uInt index, T &) const =0
	Get a value.
virtual void	putVal (uInt index, const T &)=0
	Put a value.
virtual void	set (const T &)=0
	Set entire vector to a value.
virtual void	assign (const TabVecRep< T > &)
	Set to another table vector.
void	validateConformance (uInt) const
	Check if vectors are comformant.
void *	newVec () const
	Create a new temporary vector (for result of math operations).
Protected Member Functions
virtual uInt	nelem () const
	Get nr of elements.
Protected Attributes
uInt	count_p
TabVecTag	tag_p
Int	nrel_p

Detailed Description

template<class T>
class casacore::TabVecRep< T >

Templated base class for table vectors.

Intended use:

Internal

Review Status

Reviewed By:: UNKNOWN
Date Reviewed:: before2004/08/25

Prerequisite

TableVector

Etymology

TabVecRep is the representation of a table vector.

Synopsis

TabVecRep is the counted referenced letter class for the envelope class TableVector. It is an abstract base class for the actual table vector classes TabVecScaCol and TabVecTemp.

All operations defined for TableVector are immediately passed to the corresponding virtual TabVecRep function. The header files TVecMath.h and TVecLogic.h declare all the mathematical and logical functions for TabVecRep.

Motivation

A virtual function call only works when used with an object pointer or reference. To allow the use of virtual functions in value objects, an extra level of indirection is used. This is called the letter/envelope idiom and is described in "Advanced C++" by J. Coplien. Class TableVector is the envelope to the letters TabVecRep and its derivations.

To Do

put the TabVecTag enum inside the class definition
support array columns

Definition at line 107 of file TVec.h.

Constructor & Destructor Documentation

template<class T>

casacore::TabVecRep< T >::TabVecRep ( )

Create empty table vector.

TabVecRep cannot be contructed by the user, because it is an abstract base class (it contains pure virtual functions).

template<class T>

virtual casacore::TabVecRep< T >::~TabVecRep ( ) [virtual]

Destruct the object.

Member Function Documentation

template<class T>

virtual void casacore::TabVecRep< T >::assign ( const TabVecRep< T > & ) [virtual]

Set to another table vector.

template<class T >

Bool casacore::TabVecRep< T >::conform ( const Vector< T > & vec ) const [inline]

Test if vector shape conforms another vector.

Definition at line 192 of file TVec.h.

References casacore::False, casacore::ArrayBase::nelements(), casacore::TabVecRep< T >::nelements(), and casacore::True.

template<class T >

Bool casacore::TabVecRep< T >::conform ( const TabVecRep< T > & vec ) const [inline]

Test if vector shape conforms another table vector.

Definition at line 189 of file TVec.h.

References casacore::False, casacore::TabVecRep< T >::nelements(), and casacore::True.

template<class T >

TabVecTag casacore::TabVecRep< T >::getTag ( ) const [inline]

Get the tag (the type of vector).

Definition at line 208 of file TVec.h.

References casacore::TabVecRep< T >::tag_p.

template<class T>

virtual void casacore::TabVecRep< T >::getVal	(	uInt	index,
		T &
	)			const `[pure virtual]`

Get a value.

Implemented in casacore::TabVecScaCol< T >, and casacore::TabVecTemp< T >.

template<class T >

TabVecRep< T > * casacore::TabVecRep< T >::link ( ) [inline]

Increments the reference count.

Definition at line 197 of file TVec.h.

References casacore::TabVecRep< T >::count_p.

Referenced by casacore::TableVector< T >::TableVector().

template<class T >

uInt casacore::TabVecRep< T >::ndim ( ) const [inline]

Get nr of dimensions.

Definition at line 180 of file TVec.h.

template<class T>

virtual uInt casacore::TabVecRep< T >::nelem ( ) const [protected, virtual]

Get nr of elements.

Reimplemented in casacore::TabVecScaCol< T >.

Referenced by casacore::TabVecRep< T >::nelements().

template<class T >

uInt casacore::TabVecRep< T >::nelements ( ) const [inline]

Get nr of elements (ie.

vector length).

Definition at line 184 of file TVec.h.

References casacore::TabVecRep< T >::nelem(), and casacore::TabVecRep< T >::nrel_p.

Referenced by casacore::TabVecRep< T >::conform().

template<class T>

void* casacore::TabVecRep< T >::newVec ( ) const

Create a new temporary vector (for result of math operations).

TabVecTemp<T>& cannot be used, because the template instantiation mechanism instantiates TabVecTemp, which depends on TabVecRep and therefore gives errors.

template<class T>

Bool casacore::TabVecRep< T >::ok ( ) const

Check internal consistency.

template<class T>