Base class for table iterator. More...

#include <BaseTabIter.h>

Public Member Functions
	BaseTableIterator (BaseTable *, const Block< String > &columnNames, const Block< CountedPtr< BaseCompare > > &, const Block< Int > &orders, int option)
	Create the table iterator to iterate through the given columns in the given order.
BaseTableIterator *	clone () const
	Clone this iterator.
virtual	~BaseTableIterator ()
virtual void	reset ()
	Reset the iterator (i.e.
virtual BaseTable *	next ()
	Return the next group.
Protected Member Functions
	BaseTableIterator (const BaseTableIterator &)
	Copy constructor (to be used by clone)
Protected Attributes
BaseTable *	sortTab_p
uInt	lastRow_p
uInt	nrkeys_p
Block< void * >	lastVal_p
Block< void * >	curVal_p
PtrBlock< BaseColumn * >	colPtr_p
Block< CountedPtr< BaseCompare > >	cmpObj_p
Private Member Functions
BaseTableIterator &	operator= (const BaseTableIterator &)
	Assignment is not needed, because the assignment operator in the envelope class TableIterator has reference semantics.

Detailed Description

Base class for table iterator.

Intended use:

Internal

Review Status

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

Prerequisite

Etymology

BaseTableIterator is the base class for the classes doing the actual iterating through a table.

Synopsis

BaseTableIterator is the base class for the table iterators. It is a letter class of the envelope TableIterator. Currently there are no classes derived from BaseTableIterator, since it can do all the work itself. However, in the future this need not to be true anymore.

BaseTableIterator iterates by sorting the table in the required order and then creating a RefTable for each step containing the rows for that iteration step. Each iteration step assembles the rows with equal key values.

Definition at line 83 of file BaseTabIter.h.

Constructor & Destructor Documentation

casa::BaseTableIterator::BaseTableIterator	(	BaseTable *	,
		const Block< String > &	columnNames,
		const Block< CountedPtr< BaseCompare > > &	,
		const Block< Int > &	orders,
		int	option
	)

Create the table iterator to iterate through the given columns in the given order.

The given compare objects will be used for the sort and to compare if values are equal. If a comare object is null, the default ObjCompare<T> will be used.

virtual casa::BaseTableIterator::~BaseTableIterator ( ) [virtual]

casa::BaseTableIterator::BaseTableIterator ( const BaseTableIterator & ) [protected]

Copy constructor (to be used by clone)