oracle.edge.driver
Interface EventDevice

All Superinterfaces:

Device, EdgeExtension

All Known Implementing Classes:

AbstractEventDevice

public interface EventDevice

extends Device

Event device interface to represent a symbolic device that is capable of receiving sensor events such as RFID reader etc.<br/> All sensor device driver should implement this interface.

Field Summary

Fields inherited from interface oracle.edge.common.EdgeExtension

DEVICE_DRIVER_TYPE, DISPATCHER_TYPE, FILTER_TYPE

Method Summary

void	addFilter(Filter NewFilter) Add new filter to this device.
DeviceEventArray	receive() Fetch collected event data as a DeviceEventArray object to EventProcessor.<br/> EventProcessor will spawn a separated thread to pull collected events from this device by repeatedly calling this method.
void	removeFilter(Filter ExistingFilter) Remove a filter from this device.

Methods inherited from interface oracle.edge.driver.Device

isAlive, processInstruction

Methods inherited from interface oracle.edge.common.EdgeExtension

destroy, getDescription, getName, getVersion, init, start, stop

Method Detail

addFilter

public void addFilter(Filter NewFilter)

Add new filter to this device. <p/>

Parameters:

NewFilter - a new filter to be added.

receive

public DeviceEventArray receive()
                         throws DeviceException

Fetch collected event data as a DeviceEventArray object to EventProcessor.<br/> EventProcessor will spawn a separated thread to pull collected events from this device by repeatedly calling this method. Each time when EventProcess receives the fetched events, it will send them to edge client through its event dispatcher.

Returns:

DeviceEventArray array of device events.

Throws:

DeviceException - exception thrown upon the failure of delivering events.

removeFilter

public void removeFilter(Filter ExistingFilter)

Remove a filter from this device. <p/>

Parameters:

ExistingFilter - an existing filter to be removed.