com.pow2.dao.datalist
Interface ResultSetDataList

All Superinterfaces:

DataList

All Known Implementing Classes:

ResultSetDataListChunk, ResultSetDataListImpl

public interface ResultSetDataList

extends DataList

ResultSetDataList interface.
This interface implies the concept of cursor and a corresponding current row for the underlying collection.

Author:

Claudio Fratarcangeli

Method Summary

boolean	absolute(int index) Move the cursor to a specific absolute row number.
void	beforeFirst() Move the resultSet cursor before the first row of the list.
boolean	elementExists(int index) Check if an element exists at the input index position.
boolean	hasNext() Check if there exists a row after the current row.

Methods inherited from interface com.pow2.dao.datalist.DataList

close, get, isEmpty, iterator

Method Detail

hasNext

public boolean hasNext()
                throws Exception

Check if there exists a row after the current row.

Returns:

true if a row exists, false otherwise

Throws:

Exception - if any error occurs

beforeFirst

public void beforeFirst()
                 throws Exception

Move the resultSet cursor before the first row of the list.

Throws:

Exception - if any error occurs

absolute

public boolean absolute(int index)
                 throws Exception

Move the cursor to a specific absolute row number. Rows are numbered starting from 0.

Parameters:

index - the cursor index value

Returns:

true if the cursor is on the result set; false otherwise

Throws:

Exception - if any error occurs

elementExists

public boolean elementExists(int index)
                      throws Exception

Check if an element exists at the input index position.

Parameters:

index - the index value

Returns:

true if if an element exists at the input index position, false otherwise

Throws:

Exception - if any error occurs