Running OH 2.2.0 release build.
Dimmer testDimmer
String testString
...
testDimmer.postUpdate(NULL)
if (testDimmer.state == NULL) {
testString.sendCommand("is NULL!")
} else {
testString.sendCommand(testDimmer.state.toString)
}
...
When the above code is executed the if
branch runs and “is NULL!” is set as the state of testString
.
...
testDimmer.sendCommand(NULL)
...
The above code, Commanding the item to NULL
, does not compile with error ‘cannot convert from UnDefType to String’
...
testDimmer.sendCommand(NULL.toString)
...
Results in a runtime error: Cannot convert 'NULL' to a command type which item 'testDimmer' accepts: [PercentType, OnOffType, IncreaseDecreaseType, RefreshType]
I need to be able to Command the item ‘testDimmer’ to NULL as I have code that I only want to run on ‘received command’ and then check if the receivedCommand == NULL vs a different command.
I am trying to use the state NULL as ‘not set’ and run one set of actions vs a different set of actions if the item is commanded to a ‘real’ value.
Why can a Dimmer Item be Updated to NULL
but not Commanded to NULL
?
I realise that NULL
is akin to UnDef in previous builds of OH and things have changed in this area recently but really what I need is a way to Command the state of an item to the ‘undefined’ state.
Thanks
Edit: I also tried:
testDimmer.sendCommand(UnDefType.UNDEF.toString)
but it results in the same runtime error: Cannot convert 'UNDEF'...