org.mbs.services.device.abstractdriver
Class DeviceControlUnit

java.lang.Object
  org.mbs.services.cu.generator.ServiceObject
      org.mbs.services.cu.generator.DefaultControlUnit
          org.mbs.services.device.abstractdriver.DeviceControlUnit

All Implemented Interfaces:

ControlConstants, ControlUnit, ManagedControlUnit

Direct Known Subclasses:

TokenDeviceControlUnit

public class DeviceControlUnit
extends DefaultControlUnit

This class represents a device control unit.

Since:

$Date: 2004/08/30 08:09:33 $

Author:

Stoyan Zoubev

Field Summary

Fields inherited from class org.mbs.services.cu.generator.DefaultControlUnit

ACTION_PREFIX, CHECK_INPUT, controller, controllerMethods, model

Fields inherited from interface org.mbs.services.cu.ControlConstants

CONSTRUCTOR_PREFIX, DESTRUCTOR, EVENT_FILTER, EVENT_SYNC, EVENT_TYPE, FINDER_PREFIX, ID, PARENT_ID, PARENT_ROOT, PARENT_TYPE, STATE_VARIABLE_ID, SV_LIST_SV_ID, TYPE, VERSION

Constructor Summary

DeviceControlUnit(AbstractDeviceModel model, AbstractDeviceController controller, DeviceStateGraph stateGraph)
Creates the device control unit.

Method Summary

java.lang.Object

invokeAction(java.lang.String actionId, java.lang.Object args) Executes the specified action over this control unit.

Methods inherited from class org.mbs.services.cu.generator.DefaultControlUnit

checkActionInputArguments, fillDefaultProperties, getId, getType, queryStateVariable, release, setControlUnitCallback

Methods inherited from class org.mbs.services.cu.generator.ServiceObject

registerService, unregisterService

Methods inherited from class java.lang.Object

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

Constructor Detail

DeviceControlUnit

public DeviceControlUnit(AbstractDeviceModel model,
                         AbstractDeviceController controller,
                         DeviceStateGraph stateGraph)

Creates the device control unit.

Parameters:

model - model of the device

controller - controller of the device

stateGraph - the device state graph

Method Detail

invokeAction

public java.lang.Object invokeAction(java.lang.String actionId,
                                     java.lang.Object args)
                              throws java.lang.Exception

Description copied from interface: ControlUnit

Executes the specified action over this control unit. Actions supported by a control unit and the number and types of the input and output arguments of each action are defined by the metadata of the control unit.

Specified by:

invokeAction in interface ControlUnit

Overrides:

invokeAction in class DefaultControlUnit

Parameters:

actionId - the id of the action

args - the input argument(s). If the argument is only one this is the argument itself. If the arguments are more then one, the value must be a Object[] and arguments are retrieved from that array.

Returns:

the output argument(s) or null if the action does not return value.

Throws:

java.lang.Exception - if an error occurs while executing action.

java.lang.IllegalArgumentException - if this control unit does not have action with the supplied Id or the arguments number and/or types do not match the action arguments.

See Also:

ControlUnit.invokeAction(java.lang.String, java.lang.Object)