Package org.dspace.app.ldn.dao.impl

Class LDNMessageDaoImpl

java.lang.Object

org.dspace.core.AbstractHibernateDAO<LDNMessageEntity>

org.dspace.app.ldn.dao.impl.LDNMessageDaoImpl

All Implemented Interfaces:

LDNMessageDao, GenericDAO<LDNMessageEntity>

public class LDNMessageDaoImpl
extends AbstractHibernateDAO<LDNMessageEntity>
implements LDNMessageDao

Hibernate implementation of the Database Access Object interface class for the LDNMessage object. This class is responsible for all database calls for the LDNMessage object and is autowired by spring

Author:

Mohamed Eskander (mohamed.eskander at 4science.com)

Constructor Summary

Constructors

Constructor	Description
LDNMessageDaoImpl()

Method Summary

Modifier and Type	Method	Description
List<LDNMessageEntity>	findAllMessagesByItem(Context context, Item item, String... activities)	find all ldn messages related to an item
List<LDNMessageEntity>	findAllRelatedMessagesByItem(Context context, LDNMessageEntity msg, Item item, String... relatedTypes)	find all ldn messages related to an item and to a specific ldn message
List<LDNMessageEntity>	findMessagesToBeReprocessed(Context context)
List<LDNMessageEntity>	findOldestMessageToProcess(Context context, int max_attempts)	load the oldest ldn messages considering their LDNMessageEntity.queueLastStartTime
List<LDNMessageEntity>	findProcessingTimedoutMessages(Context context, int max_attempts)	find ldn message entties in processing status and already timed out.

Methods inherited from class org.dspace.core.AbstractHibernateDAO

count, count, countLong, create, createQuery, createQuery, delete, executeCriteriaQuery, findAll, findAll, findByID, findByID, findByID, findByX, findMany, findMany, findUnique, getCriteriaBuilder, getCriteriaQuery, getHibernateSession, iterate, list, list, list, list, save, singleResult, singleResult, uniqueResult, uniqueResult

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.dspace.core.GenericDAO

create, delete, findAll, findAll, findByID, findByID, findByID, findMany, findUnique, save

Constructor Details

LDNMessageDaoImpl

public LDNMessageDaoImpl()

Method Details

findOldestMessageToProcess

public List<LDNMessageEntity> findOldestMessageToProcess(Context context,
 int max_attempts)
                                                  throws SQLException

Description copied from interface: LDNMessageDao

load the oldest ldn messages considering their LDNMessageEntity.queueLastStartTime

Specified by:

findOldestMessageToProcess in interface LDNMessageDao

max_attempts - consider ldn_message entity with queue_attempts <= max_attempts

Returns:

ldn message entities to be routed

Throws:

SQLException

findMessagesToBeReprocessed

public List<LDNMessageEntity> findMessagesToBeReprocessed(Context context)
                                                   throws SQLException

Specified by:

findMessagesToBeReprocessed in interface LDNMessageDao

Returns:

the list of messages in need to be reprocessed - with queue_status as QUEUE_STATUS_QUEUED_FOR_RETRY

Throws:

SQLException

findProcessingTimedoutMessages

public List<LDNMessageEntity> findProcessingTimedoutMessages(Context context,
 int max_attempts)
                                                      throws SQLException

Description copied from interface: LDNMessageDao

find ldn message entties in processing status and already timed out.

Specified by:

findProcessingTimedoutMessages in interface LDNMessageDao

max_attempts - consider ldn_message entity with queue_attempts <= max_attempts

Returns:

ldn message entities

Throws:

SQLException

findAllRelatedMessagesByItem

public List<LDNMessageEntity> findAllRelatedMessagesByItem(Context context,
 LDNMessageEntity msg,
 Item item,
 String... relatedTypes)
                                                    throws SQLException

Description copied from interface: LDNMessageDao

find all ldn messages related to an item and to a specific ldn message

Specified by:

findAllRelatedMessagesByItem in interface LDNMessageDao

msg - the referring ldn message

item - the referring repository item

relatedTypes - filter for @see org.dspace.app.ldn.LDNMessageEntity#activityStreamType

Returns:

all related ldn messages

Throws:

SQLException

findAllMessagesByItem

public List<LDNMessageEntity> findAllMessagesByItem(Context context,
 Item item,
 String... activities)
                                             throws SQLException

Description copied from interface: LDNMessageDao

find all ldn messages related to an item

Specified by:

findAllMessagesByItem in interface LDNMessageDao

item - item related to the returned ldn messages

activities - involves only this specific group of activities

Returns:

all ldn messages related to the given item

Throws:

SQLException