org.jahia.services.query

Class ScrollableQuery

java.lang.Object

org.jahia.services.query.ScrollableQuery

public class ScrollableQuery
extends Object

ScrollableQuery allow you to execute a Query with a step iteration It can be useful in some cases when you are looking for some data and just want a sample in it There is a security to avoid infinite looping, it's stop automatically at the end of the data available for the query

Author:

kevan

Constructor Summary

Constructors

Constructor and Description
ScrollableQuery(long step, long maxIteration, javax.jcr.query.Query query) create a ScrollableQuery instance, with an iteration limit.
ScrollableQuery(long step, javax.jcr.query.Query query) create a ScrollableQuery instance

Method Summary

Modifier and Type	Method and Description
<T> T	execute(ScrollableQueryCallback<T> callback) The callback

Methods inherited from class java.lang.Object

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

Constructor Detail

ScrollableQuery

public ScrollableQuery(long step,
                       javax.jcr.query.Query query)

create a ScrollableQuery instance

Parameters:

step - the step size

query - the query to scroll on

ScrollableQuery

public ScrollableQuery(long step,
                       long maxIteration,
                       javax.jcr.query.Query query)

create a ScrollableQuery instance, with an iteration limit.

Parameters:

step - the step size

maxIteration - the maximum number of iteration

query - the query to scroll on

Method Detail

execute

public <T> T execute(ScrollableQueryCallback<T> callback)
              throws javax.jcr.RepositoryException

The callback

Parameters:

callback - the callback that will be used on each iteration

Returns:

return the callback result

Throws:

javax.jcr.RepositoryException - in case of JCR-related errors