Change event criteria for Attribute of type DevString or DevStringArray

General Development
1

Hi,

I want to quantize the criteria for raising the change event for Attribute of type DevString or DevStringArray.

My objective is to raise a change event when the value of the attribute of type DevString changes. I’m not able to understand what should I specify the value of the attribute property “changeEventAbsolute”.

e.g if the attribute is of type double, short, long, then I can specify the change event criteria as changeEventAbsolute = “1”, indicating that the event should be raised if the value of the attribute changes by 1 or more than that.

Similarly what should I set the value of “changeEventAbsolute” property for attribute of type DevString in order to achieve my objective.

I’m writing the device server in java.

Regards,
Ganesh Jangir

2

Hi Ganesh

For types DevBoolean, DevState and DevString there is no criteria to set.
For DevString, if at least one char has changed, a change event is sent.
Regards

3

Hi Pascal,

Thanks for your prompt response.

Regards,
Ganesh Jangir