er.extensions
Class ERXRecursiveBatchFetching

java.lang.Object
  er.extensions.ERXRecursiveBatchFetching

public class ERXRecursiveBatchFetching

extends Object

Author:

Lenny Marks (lenny@aps.org)

Constructor Summary

ERXRecursiveBatchFetching()

Method Summary

static void

batchFetch(NSArray sourceObjects, NSArray keypaths) Batch fetch relationships specified by keypaths for sourceObjects .

Methods inherited from class java.lang.Object

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

Constructor Detail

ERXRecursiveBatchFetching

public ERXRecursiveBatchFetching()

Method Detail

batchFetch

public static void batchFetch(NSArray sourceObjects,
                              NSArray keypaths)

Batch fetch relationships specified by keypaths for sourceObjects .

This method will use EODatabaseContext.batchFetchRelationship to efficiently fetch like relationships for many objects in as few as one database round trip per relationship. For example, if fetching from Movie entities, you might specify paths of the form: ("directors","roles.talent", "plotSummary"). This works much like prefetching with fetch specifications, however this implementation is able to work around inheritance where prefetching fails.

Parameters:

sourceObjects -

keypaths -