Change event criteria for Attribute of type DevString or DevStringArray

# 8 years ago
Ganesh	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

# 8 years ago

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

# 8 years ago
Pascal	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

# 8 years ago
Ganesh	Hi Pascal, Thanks for your prompt response. Regards, Ganesh Jangir Edited 8 years ago