org.rhq.server.metrics.domain

Class SimplePagedResult<T>

java.lang.Object

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

All Implemented Interfaces:

Iterable<T>

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

This class is just a placeholder for future pagination implementations once Cassandra gets native support for paging results. Right now the amount of data that is returned from Cassandra by any of the queries that run through this class is small (under 10MB). So there is no performance impact for using this class as it is right now. TODO: Update this code to support native pagination once Cassandra supports it.

Author:

Stefan Negrea

Constructor Summary

Constructors

Constructor and Description
SimplePagedResult(com.datastax.driver.core.Query query, ResultSetMapper<T> mapper, StorageSession session)
SimplePagedResult(com.datastax.driver.core.Query query, ResultSetMapper<T> mapper, StorageSession session, int pageSize)
SimplePagedResult(String query, ResultSetMapper<T> mapper, StorageSession session)
SimplePagedResult(String query, ResultSetMapper<T> mapper, StorageSession 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

SimplePagedResult

public SimplePagedResult(com.datastax.driver.core.Query query,
                 ResultSetMapper<T> mapper,
                 StorageSession session,
                 int pageSize)

Parameters:

query - query to execute

mapper - result set mapper

session - Cassandra session

pageSize - page size

SimplePagedResult

public SimplePagedResult(String query,
                 ResultSetMapper<T> mapper,
                 StorageSession session,
                 int pageSize)

Parameters:

query - query to execute

mapper - result set mapper

session - Cassandra session

pageSize - page size

SimplePagedResult

public SimplePagedResult(com.datastax.driver.core.Query query,
                 ResultSetMapper<T> mapper,
                 StorageSession session)

Parameters:

query - query to execute

mapper - result set mapper

session - Cassandra session

SimplePagedResult

public SimplePagedResult(String query,
                 ResultSetMapper<T> mapper,
                 StorageSession 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>