org.rhq.server.metrics.domain

Class SlicedPagedResult<T>

java.lang.Object

org.rhq.server.metrics.domain.SlicedPagedResult<T>

All Implemented Interfaces:

Iterable<T>

public class SlicedPagedResult<T>
extends Object
implements Iterable<T>

This class provides a method to paginate Cassandra results based on user provided queries. The user is required to provided the initial query to obtain the first slice and then additional queries to obtain subsequent slices based on the last retrieved element from Cassandra.

Author:

Stefan Negrea

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	SlicedPagedResult.QueryCreator<T>

Constructor Summary

Constructors

Constructor and Description
SlicedPagedResult(SlicedPagedResult.QueryCreator<T> queryCreator, ResultSetMapper<T> mapper, com.datastax.driver.core.Session session)
SlicedPagedResult(SlicedPagedResult.QueryCreator<T> queryCreator, ResultSetMapper<T> mapper, com.datastax.driver.core.Session session, int pageSize)

Method Summary

Methods

Modifier and Type	Method and Description
int	getPageSize()
Iterator<T>	iterator()

Methods inherited from class java.lang.Object

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

Constructor Detail

SlicedPagedResult

public SlicedPagedResult(SlicedPagedResult.QueryCreator<T> queryCreator,
                 ResultSetMapper<T> mapper,
                 com.datastax.driver.core.Session session,
                 int pageSize)

Parameters:

query - query to execute

mapper - result set mapper

session - Cassandra session

pageSize - page size

SlicedPagedResult

public SlicedPagedResult(SlicedPagedResult.QueryCreator<T> queryCreator,
                 ResultSetMapper<T> mapper,
                 com.datastax.driver.core.Session session)

Parameters:

query - query to execute

mapper - result set mapper

session - Cassandra session

pageSize - page size

Method Detail

getPageSize

public int getPageSize()

Returns:

page size

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>