com.ocs.dynamo.dao.query

Class DataSetIterator<ID extends Serializable,T extends AbstractEntity<ID>>

java.lang.Object

com.ocs.dynamo.dao.query.DataSetIterator<ID,T>

Type Parameters:

ID - the type of the primary key of the entity

T - the type of the entity

public abstract class DataSetIterator<ID extends Serializable,T extends AbstractEntity<ID>>
extends Object

An iterator for traversing large data sets without loading them all into memory

Author:

bas.rutten

Constructor Summary

Constructors

Constructor and Description
DataSetIterator(List<ID> idList)
DataSetIterator(List<ID> idList, int pageSize)

Method Summary

Modifier and Type	Method and Description
T	next()
protected abstract List<T>	readPage(List<ID> ids) Returns a page of data given a list of IDs
int	size() Returns the size

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataSetIterator

public DataSetIterator(List<ID> idList)

DataSetIterator

public DataSetIterator(List<ID> idList,
                       int pageSize)

Method Detail

next

public T next()

readPage

protected abstract List<T> readPage(List<ID> ids)

Returns a page of data given a list of IDs

Parameters:

ids -

Returns:

size

public int size()

Returns the size

Returns: