[Units] Add MK⁻¹ unit alias

[andrewfg]

See discussion openhab/openhab-addons#17638 (comment)

Signed-off-by: AndrewFG [email protected]

[andrewfg]

@maniac103 for info..

[ccutrer]

Should we also be adding mirek as an alias? And perhaps changing the proper name of the unit to MK⁻¹ , with mired as the alias?

[andrewfg]

^
I would support that.

[ccutrer]

LGTM

[lolodomo]

I followed the discussion and it looks good to me too.

[lolodomo]

If I have a String myUnit containing a unit, what is the code to use to check that is a unit in "mired" whatever the accepted symbol ?
If I use Units.MIRED.toString().equals(myUnit), this will probably work only with "mired" with the current code and only "MK⁻¹" when this PR is merged.

[andrewfg]

If I have a String myUnit containing a unit, what is the code to use to check that is a unit in "mired" whatever the accepted symbol ?

Umm. From memory I believe it is the following. .. But perhaps I should add a Junit test to confirm that works?

Unit unit = QuantityType.valueOf(yourString).getUnit();

EDIT: whereby "yourString" has to contain a number rather than a pattern..

[andrewfg]

@lolodomo I just added the Junit test (it passes).

PS and the code for checking a pattern match would be..

String pattern = "%.0f mired";
boolean isOk = false;
try {
    isOk = Units.MIRED == QuantityType.valueOf(String.format(pattern, 123)).getUnit();
} catch (Exception e) {
}

[ccutrer]

Or UnitUtils.parseUnit if you only have the unit, without a scalar for a full quantity

[lolodomo]

Or UnitUtils.parseUnit if you only have the unit, without a scalar for a full quantity

Oh yes, looks better, thank you.

[holgerfriedrich]

LGTM, thanks!