RecordIterator Class Reference

#include <RecordIterator.h>

List of all members.

---

Detailed Description

Record iterator.

This class does not implement the Iterator interface because of the potential I/O exceptions. While they could be appropriately handled, it seemed more straightforward just to pass them on through.

Author:

Dave Musicant, with considerable material reused from the UW-Madison Minibase project

Public Member Functions
	RecordIterator (BufferManager *buf, int firstId, string file)
	Constructs a record iterator.
	~RecordIterator ()
	Destructor.
bool	hasNext ()
	Returns true if the iterator has more records.
RID	next ()
	Returns the next RID in the iteration.

---

Constructor & Destructor Documentation

RecordIterator::RecordIterator	(	BufferManager *	buf,
		int	firstId,
		string	file
	)

Constructs a record iterator.

Parameters:

	buf	pointer to a buffer manager to use for managing pages in memory.
	firstId	the page id of the starting page.
	file	the name of the file that the page are drawn from.

---

Member Function Documentation

bool RecordIterator::hasNext

(

)

Returns true if the iterator has more records.

Returns:

true if the iterator has more records.

RID RecordIterator::next

(

)

Returns the next RID in the iteration.

Returns:

the next RID.

Exceptions:

NoSuchElementException

iteration has no more pages.

---