com.pow2.dao.datalist
Interface DataListHandler

public interface DataListHandler

DataListHandler Interface.
This interface is used by a client application to retrieve a subset of the query result set.

Author:

Claudio Fratarcangeli

Method Summary

void	close() Close this handler.
boolean	elementExists(int index) Check if the element at the input position exists.
DataList	getList() Get the entire data list.
DataList	getListChunk(int startIndex, int count) Gets a subset of the query result set.

Method Detail

getList

public DataList getList()
                 throws Exception

Get the entire data list.

Returns:

the entire data list

Throws:

Exception - if any error occurs

getListChunk

public DataList getListChunk(int startIndex,
                             int count)
                      throws Exception

Gets a subset of the query result set.

Parameters:

startIndex - start index

count - number of records to fetch

Returns:

a subset of the query result set

Throws:

Exception - if any error occurs

elementExists

public boolean elementExists(int index)
                      throws Exception

Check if the element at the input position exists.

Parameters:

index - the index position value

Returns:

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

Throws:

Exception - if any error occurs

close

public void close()
           throws Exception

Close this handler.

Throws:

Exception - if any error occurs