org.eaglei.search.provider.lucene.harvest
Class AbstractStreamHarvester

java.lang.Object
  org.eaglei.search.provider.lucene.harvest.AbstractStreamHarvester

All Implemented Interfaces:

org.eaglei.search.harvest.DataHarvester, org.eaglei.search.harvest.PollingDataHarvester

Direct Known Subclasses:

FileStreamHarvester, RepositoryStreamHarvester

public abstract class AbstractStreamHarvester
extends java.lang.Object
implements org.eaglei.search.harvest.PollingDataHarvester

• The results from the harvest call (returned in SPARQL tabular format) are parsed into a set of SPARQL QuerySolutions.
• The QuerySolutions are used to create a set of ResourceChangeEvents (one event for each unique subject URI).
• ResourceChangeListeners are notified when a set of change notifications are about to being, on each event, and on change stream end.

Author:

tbashor

Field Summary

protected org.eaglei.model.EIOntModel	eiOntModel
protected static java.text.DateFormat	formatWithTZ
protected org.eaglei.model.EIEntity	institution
protected boolean	isInitialized

Constructor Summary

protected

AbstractStreamHarvester(org.eaglei.model.EIOntModel eiOntModel, org.eaglei.model.EIEntity institution) Creates a new RepositoryHarvester.

Method Summary

void	addChangeListener(org.eaglei.search.harvest.ResourceChangeListener listener)
protected int	generateResourceChangeEvents(java.io.InputStream is)
abstract java.lang.String	getHarvestInfo()
boolean	isInitialized()
boolean	isInitialPollComplete()
protected void	notifyChangeEvent(org.eaglei.search.harvest.ResourceChangeEvent event)
protected void	notifyChangeStreamEnd(java.util.Date lastModifiedDate)
protected void	notifyChangeStreamStart()
void	setInitialized(boolean isInitialized)
void	startPolling()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eaglei.search.harvest.DataHarvester

harvest

Field Detail

formatWithTZ

protected static final java.text.DateFormat formatWithTZ

eiOntModel

protected final org.eaglei.model.EIOntModel eiOntModel

institution

protected final org.eaglei.model.EIEntity institution

isInitialized

protected boolean isInitialized

Constructor Detail

AbstractStreamHarvester

protected AbstractStreamHarvester(org.eaglei.model.EIOntModel eiOntModel,
                                  org.eaglei.model.EIEntity institution)

Creates a new RepositoryHarvester.

Method Detail

isInitialPollComplete

public boolean isInitialPollComplete()

Specified by:

isInitialPollComplete in interface org.eaglei.search.harvest.PollingDataHarvester

startPolling

public void startPolling()

Specified by:

startPolling in interface org.eaglei.search.harvest.PollingDataHarvester

isInitialized

public boolean isInitialized()

setInitialized

public void setInitialized(boolean isInitialized)

getHarvestInfo

public abstract java.lang.String getHarvestInfo()

addChangeListener

public void addChangeListener(org.eaglei.search.harvest.ResourceChangeListener listener)

Specified by:

addChangeListener in interface org.eaglei.search.harvest.DataHarvester

notifyChangeStreamStart

protected void notifyChangeStreamStart()

notifyChangeEvent

protected void notifyChangeEvent(org.eaglei.search.harvest.ResourceChangeEvent event)

notifyChangeStreamEnd

protected void notifyChangeStreamEnd(java.util.Date lastModifiedDate)

generateResourceChangeEvents

protected int generateResourceChangeEvents(java.io.InputStream is)