Package com.twl.xg.dao

Class SensorRepository

java.lang.Object

com.twl.xg.dao.SensorRepository

@Repository
public class SensorRepository
extends java.lang.Object

Persistence layer for sensor entity, defines basic operations in database.

Version:

1.0

Author:

Xiaozheng Guo

See Also:

SensorEntity

Field Summary

Fields

Modifier and Type	Field	Description
private static org.apache.log4j.Logger	logger
private org.hibernate.SessionFactory	sessionFactory

Constructor Summary

Constructors

Constructor	Description
SensorRepository()

Method Summary

Modifier and Type	Method	Description
void	clear()	Delete all entries in sensor table.
SensorEntity	get(java.lang.String sensorIp)	Get a SensorEntity instance for the input sensor IP.
java.util.List<SensorEntity>	getAll()	Fetch all entries in sensor table, ordered by sensor name.
java.util.List<SensorEntity>	getAll(java.lang.String borderRouterIp)	Fetch all entries of sensors that connected to the input border router.
java.util.List<java.lang.String>	getAllSensorIp()	Get all sensor IP from the database.
java.lang.String	save(SensorEntity sensorEntity)	Save the input sensorEntity in database.
long	size()	Get the total number of entries of sensor.
boolean	updateSensorName(java.lang.String sensorIp, java.lang.String sensorName)	Update the name of a sensor.

Methods inherited from class java.lang.Object

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

Field Detail

sessionFactory

@Autowired
private org.hibernate.SessionFactory sessionFactory

logger

private static final org.apache.log4j.Logger logger

Constructor Detail

SensorRepository

public SensorRepository()

Method Detail

updateSensorName

public boolean updateSensorName(java.lang.String sensorIp,
                                java.lang.String sensorName)

Update the name of a sensor.

Parameters:

sensorIp - IP of the sensor you want to update.

sensorName - The name you want to update for the sensor.

Returns:

true for success, false otherwise.

get

public SensorEntity get(java.lang.String sensorIp)

Get a SensorEntity instance for the input sensor IP. Return null if the input sensor IP doesn't exist in database.

Parameters:

sensorIp - The IPv6 address of the sensor you want to get.

Returns:

SensorEntity

size

public long size()

Get the total number of entries of sensor.

Returns:

the size of sensor table.

save

public java.lang.String save(SensorEntity sensorEntity)

Save the input sensorEntity in database. Throw a NullPointerException if the input sensorEntity is null.

Parameters:

sensorEntity - Instance of SensorEntity for the sensor you want to save.

Returns:

return a string of ID of the saved entry

clear

public void clear()

Delete all entries in sensor table. Note: this operation will also delete all entries in sensorData table, because sensorData table is delete-cascade.

getAll

public java.util.List<SensorEntity> getAll()

Fetch all entries in sensor table, ordered by sensor name.

Returns:

A list of SensorEntity.

getAllSensorIp

public java.util.List<java.lang.String> getAllSensorIp()

Get all sensor IP from the database. If there is no sensor in the database, return an empty list.

Returns:

A list of String contains all sensor IP.

getAll

public java.util.List<SensorEntity> getAll(java.lang.String borderRouterIp)

Fetch all entries of sensors that connected to the input border router. Return an empty list if the input borderRouterIp doesn't exist in database.

Parameters:

borderRouterIp - The IPv6 address of the border router to which the sensors are connected.

Returns:

A list of SensorEntity.