DeviceClass¶
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class
tango.
DeviceClass
¶ Base class for all TANGO device-class class. A TANGO device-class class is a class where is stored all data/method common to all devices of a TANGO device class
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create_device
(self, device_name, alias=None, cb=None) → None¶ Creates a new device of the given class in the database, creates a new DeviceImpl for it and calls init_device (just like it is done for existing devices when the DS starts up)
An optional parameter callback is called AFTER the device is registered in the database and BEFORE the init_device for the newly created device is called
- Throws tango.DevFailed:
- the device name exists already or
- the given class is not registered for this DS.
- the cb is not a callable
New in PyTango 7.1.2
Parameters: device_name: ( str
) the device namealias: ( str
) optional alias. Default value is None meaning do not create device aliascb: ( callable
) a callback that is called AFTER the device is registered in the database and BEFORE the init_device for the newly created device is called. Typically you may want to put device and/or attribute properties in the database here. The callback must receive a parameter: device name (str). Default value is None meaning no callbackReturn: None
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delete_device
(self, klass_name, device_name) → None¶ Deletes an existing device from the database and from this running server
- Throws tango.DevFailed:
- the device name doesn’t exist in the database
- the device name doesn’t exist in this DS.
New in PyTango 7.1.2
Parameters: klass_name: ( str
) the device class namedevice_name: ( str
) the device nameReturn: None
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device_destroyer
(name)¶ for internal usage only
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device_factory
(device_list)¶ for internal usage only
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device_name_factory
(self, dev_name_list) → None¶ - Create device(s) name list (for no database device server). This method can be re-defined in DeviceClass sub-class for device server started without database. Its rule is to initialise class device name. The default method does nothing.
Parameters: dev_name_list: ( seq
) sequence of devices to be filledReturn: None
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