Package net.solarnetwork.node.dao

Class QueueDatumDao

java.lang.Object

net.solarnetwork.node.dao.QueueDatumDao

All Implemented Interfaces:

DatumDao

public class QueueDatumDao
extends Object
implements DatumDao

DatumDao that offers datum to a DatumQueue.

Since:

1.89

Version:

2.0

Author:

matt

Field Summary

Fields inherited from interface net.solarnetwork.node.dao.DatumDao

EVENT_TOPIC_DATUM_STORED

Constructor Summary

Constructors

Constructor	Description
QueueDatumDao(DatumQueue datumQueue)	Constructor.

Method Summary

Modifier and Type	Method	Description
int	deleteUploadedDataOlderThan(int hours)	Delete both Datum and DatumUpload objects that have been successfully uploaded to at least one destination and are older than the specified number of hours.
List<NodeDatum>	getDatumNotUploaded(String destination)	Get a List of Datum instances that have not been uploaded yet to a specific destination.
void	setDatumUploaded(NodeDatum datum, Instant date, String destination, String trackingId)	Mark a datum as uploaded.
void	storeDatum(NodeDatum datum)	Store (create or update) a datum.

Methods inherited from class java.lang.Object

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

Constructor Details

QueueDatumDao

public QueueDatumDao(DatumQueue datumQueue)

Constructor.

Parameters:

datumQueue - the queue

Method Details

storeDatum

public void storeDatum(NodeDatum datum)

Description copied from interface: DatumDao

Store (create or update) a datum.

Specified by:

storeDatum in interface DatumDao

Parameters:

datum - the datum to persist

getDatumNotUploaded

public List<NodeDatum> getDatumNotUploaded(String destination)

Description copied from interface: DatumDao

Get a List of Datum instances that have not been uploaded yet to a specific destination.

This does not need to return all data, it can limit the amount returned at one time to conserve memory. This method can be called repeatedly if needed.

Specified by:

getDatumNotUploaded in interface DatumDao

Parameters:

destination - the destination to check

Returns:

list of Datum, or empty List if none available

setDatumUploaded

public void setDatumUploaded(NodeDatum datum,
 Instant date,
 String destination,
 String trackingId)

Description copied from interface: DatumDao

Mark a datum as uploaded.

Specified by:

setDatumUploaded in interface DatumDao

Parameters:

datum - the Datum that has been uploaded successfully

date - the date it was uploaded

destination - the destination the Datum was uploaded to

trackingId - the remote tracking ID assigned to the uploaded Datum

deleteUploadedDataOlderThan

public int deleteUploadedDataOlderThan(int hours)

Description copied from interface: DatumDao

Delete both Datum and DatumUpload objects that have been successfully uploaded to at least one destination and are older than the specified number of hours.

This is designed to free up space from local database storage for devices with limited storage capacity. It will not delete any Datum objects that have not been successfully uploaded anywhere.

Specified by:

deleteUploadedDataOlderThan in interface DatumDao

Parameters:

hours - the minimum number of hours old the data must be to delete

Returns:

the number of Datum (and associated DatumUpload) entities deleted