 Class to iterate through a ConcatRows object.

More...

#include <ConcatRows.h>

Public Member Functions
	ConcatRowsIter (const ConcatRows &)
	Construct the iterator on a ConcatRows object.
	ConcatRowsIter (const ConcatRows &, uInt start, uInt end, uInt incr=1)
	Construct the iterator on a ConcatRows object for the given row range.
Bool	pastEnd () const
	Is the iterator past the end?
void	operator++ ()
	Go the next chunk.
void	operator++ (int)
void	next ()
RefRows	getChunk () const
	Get the current chunk.
uInt	tableNr () const
	Get the nr of the table the current chunk is in.
Private Attributes
const ConcatRows *	itsRows
Vector< uInt >	itsChunk
uInt	itsStart
uInt	itsEnd
uInt	itsIncr
uInt	itsPos
Bool	itsPastEnd

Detailed Description

 Class to iterate through a ConcatRows object.

 <h3>Intended use:</h3> Internal

  <h3>Review Status</h3><dl><dt>Reviewed By:<dd>UNKNOWN<dt>Test programs:<dd>tConcatRows</dl> 

<h3>Prerequisite</h3><ul>    <li>   \link casa::ConcatRows ConcatRows \endlink 
</ul>

 <h3>Synopsis</h3>
 ConcatRowsSliceIter is useful to iterate through a
   \link casa::ConcatRows ConcatRows \endlink  object.
 It is possible to define for which row

especially if the ConcatRows object contains slices. Each step in the iteration returns a Slice object containing the next slice in the ConcatRows object.
It is used in Table and data manager classes (e.g. StManColumn).

Example

This example shows how to iterate through a ConcatRows object (giving a slice) and through each of the slices.

    void somefunc (const ConcatRows& rownrs)
      // Iterate through all slices.
      ConcatRowsSliceIter rowiter(rownrs);
      while (! rowiter.pastEnd()) {
        // Get start, end, and increment for this slice.
        uInt rownr = rowiter.sliceStart();
        uInt end = rowiter.sliceEnd();
        uInt incr = rowiter.sliceIncr();
        // Iterate through the row numbers in the slice.
        while (rownr <= end) {
          rownr += incr;
        }
        // Go to next slice.
        rowiter++;
      }
    }