org.apache.ojb.broker.accesslayer
Class ReferencePrefetcher

java.lang.Object
  org.apache.ojb.broker.accesslayer.BasePrefetcher
      org.apache.ojb.broker.accesslayer.RelationshipPrefetcherImpl
          org.apache.ojb.broker.accesslayer.ReferencePrefetcher

All Implemented Interfaces:

RelationshipPrefetcher

public class ReferencePrefetcher
extends RelationshipPrefetcherImpl

Relationship Prefetcher for References.

Version:

$Id: ReferencePrefetcher.java,v 1.1 2007-08-24 22:17:30 ewestfal Exp $

Author:

Jakob Braeuchi

Field Summary

Fields inherited from class org.apache.ojb.broker.accesslayer.BasePrefetcher

IN_LIMIT, itemClassDesc, pkLimit

Constructor Summary

ReferencePrefetcher(PersistenceBrokerImpl aBroker, ObjectReferenceDescriptor anOrd)
Constructor for ReferencePrefetcher.

Method Summary

protected void	associateBatched(Collection owners, Collection children) Associate the batched Children with their owner object.
protected Query[]	buildPrefetchQueries(Collection owners, Collection children) Build the multiple queries for one relationship because of limitation of IN(...)
protected Query	buildPrefetchQuery(Collection ids)

Methods inherited from class org.apache.ojb.broker.accesslayer.RelationshipPrefetcherImpl

getObjectReferenceDescriptor, getOwnerClassDescriptor, isCascadeRetrieve, prepareRelationshipSettings, restoreRelationshipSettings, setCascadeRetrieve, setObjectReferenceDescriptor

Methods inherited from class org.apache.ojb.broker.accesslayer.BasePrefetcher

buildPrefetchCriteria, buildPrefetchQuery, buildPrefetchQuery, getBroker, getDescriptorRepository, getItemClassDescriptor, getLimit, getLogger, prefetchRelationship

Methods inherited from class java.lang.Object

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

Constructor Detail

ReferencePrefetcher

public ReferencePrefetcher(PersistenceBrokerImpl aBroker,
                           ObjectReferenceDescriptor anOrd)

Constructor for ReferencePrefetcher.

Parameters:

aBroker -

anOrd -

Method Detail

associateBatched

protected void associateBatched(Collection owners,
                                Collection children)

Associate the batched Children with their owner object. Loop over owners

Specified by:

associateBatched in class BasePrefetcher

buildPrefetchQueries

protected Query[] buildPrefetchQueries(Collection owners,
                                       Collection children)

Build the multiple queries for one relationship because of limitation of IN(...)

Specified by:

buildPrefetchQueries in class BasePrefetcher

Parameters:

owners - Collection containing all objects of the ONE side

children - Collection where related objects found in the cache should be added.

buildPrefetchQuery

protected Query buildPrefetchQuery(Collection ids)

See Also:

BasePrefetcher.buildPrefetchCriteria(java.util.Collection, org.apache.ojb.broker.metadata.FieldDescriptor[])