bucket.core.persistence.hibernate

Class HibernateEntityObjectQueue

java.lang.Object

bucket.core.persistence.hibernate.HibernateEntityObjectQueue

All Implemented Interfaces:

EntityObjectQueue

public class HibernateEntityObjectQueue
extends java.lang.Object
implements EntityObjectQueue

Used for batch indexing.

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.log4j.Category	log

Constructor Summary

Constructors

Constructor and Description
HibernateEntityObjectQueue(java.util.List handles, org.hibernate.SessionFactory sessionFactory)

Method Summary

Methods

Modifier and Type	Method and Description
void	clearCaches() Clear any underlying caches that might be kept as the queue is run through.
void	close() Release all resources (i.e.
java.util.List	getNextObjects() Get a collection of the next "group" of objects from the queue.

Methods inherited from class java.lang.Object

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

Field Detail

log

public static final org.apache.log4j.Category log

Constructor Detail

HibernateEntityObjectQueue

public HibernateEntityObjectQueue(java.util.List handles,
                          org.hibernate.SessionFactory sessionFactory)
                           throws org.hibernate.HibernateException

Throws:

org.hibernate.HibernateException

Method Detail

getNextObjects

public java.util.List getNextObjects()

Description copied from interface: EntityObjectQueue

Get a collection of the next "group" of objects from the queue. The size of this group is determined by the queue itself, it's just a "reasonable" size for the underlying implementation. If there are no more objects available, an empty list will be returned.

Specified by:

getNextObjects in interface EntityObjectQueue

Returns:

the next "group" of objects from the queue, or the empty list if there are no more objects available.

clearCaches

public void clearCaches()

Description copied from interface: EntityObjectQueue

Clear any underlying caches that might be kept as the queue is run through. This is an efficiency measure for when an operation is running through a large number of objects, and the underlying DAO implementation hangs on to memory for the entire session.

Specified by:

clearCaches in interface EntityObjectQueue

close

public void close()

Description copied from interface: EntityObjectQueue

Release all resources (i.e. database connections) held by the queue. Anyone who retrieves a queue is responsible for closing it when they are done.

Specified by:

close in interface EntityObjectQueue