Package com.twl.xg.dao

Class SensorDataRepository

java.lang.Object

com.twl.xg.dao.SensorDataRepository

@Repository
public class SensorDataRepository
extends java.lang.Object

This is the repository class for sensor data entity. This class defines basic database operations for sensor data entity.

Version:

1.0

Author:

Xiaozheng Guo

See Also:

SensorDataEntity

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
SensorDataRepository()

Method Summary

Modifier and Type	Method	Description
int	clear()	Delete all entries in sensorData table.
java.util.List<SensorDataEntity>	getAll()	Fetch all entries in sensorData table.
java.util.List<SensorDataEntity>	getAll(java.lang.String sensorIp)	Fetch all entries of sensor data for the input sensor IP.
java.util.List<SensorDataEntity>	getAllLaterThan(java.lang.String sensorIp, java.util.Date timeStamp)	Get all entries of sensor data that were created later than the input timeStamp for the input sensor IP.
java.util.List<SensorDataEntity>	getAllLaterThan(java.util.Date timeStamp)	Get all entries of sensor data that were created later than the input timeStamp.
java.lang.String	save(SensorDataEntity sensorDataEntity)	Save the input sensor data entity in database.
long	size()	Get the total number of sensor data entries in database.

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

SensorDataRepository

public SensorDataRepository()

Method Detail

size

public long size()

Get the total number of sensor data entries in database.

Returns:

the number of sensor data entries in database.

save

public java.lang.String save(SensorDataEntity sensorDataEntity)

Save the input sensor data entity in database. Throws NullPointerException when the input sensorDataEntity is null;

Parameters:

sensorDataEntity - An instance of SensorDataEntity of the sensor data you want to save.

Returns:

Return the ID of the added sensor data entry.

clear

public int clear()

Delete all entries in sensorData table. return the number of entries that have been deleted.

Returns:

number of entries deleted.

getAll

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

Fetch all entries in sensorData table. Ordered by automatically generated id.

Returns:

A list of SensorDataEntity.

getAll

public java.util.List<SensorDataEntity> getAll(java.lang.String sensorIp)

Fetch all entries of sensor data for the input sensor IP. The results are be ordered by automatically generated ID of sensor data entries. Return an empty list if the input sensorIp doesn't exist in the database or there is no data entry for the input sensor IP.

Parameters:

sensorIp - The IPv6 address of the sensor from which the data you want to fetch generated.

Returns:

A list of SensorDataEntity.

getAllLaterThan

public java.util.List<SensorDataEntity> getAllLaterThan(java.util.Date timeStamp)

Get all entries of sensor data that were created later than the input timeStamp. The results are ordered by sensor data ID. Throw NullPointerException if the input timeStamp is null;

Parameters:

timeStamp - The time stamp you want to query

Returns:

A list of SensorDataEntity

getAllLaterThan

public java.util.List<SensorDataEntity> getAllLaterThan(java.lang.String sensorIp,
                                                        java.util.Date timeStamp)

Get all entries of sensor data that were created later than the input timeStamp for the input sensor IP. The results are ordered by sensor data ID. Return an empty list if the input sensorIp doesn't exist. Throws NullPointerException if the input timeStamp is null;

Parameters:

timeStamp - The time stamp you want to query.

Returns:

A list of SensorDataEntity