Persistence: defining items in .persist file

Setup, Configuration and Use Runtime
1

Hi there,

I’ve configured persistence with mysql this weekend. Like in this example


I’d like to save the “set temperature” for my valves & wall thermostats every hour.

my test environement:

Names of the item / thing
homematic_HMIP_WTH_6339e38e_000313C98CC36E_1_SET_POINT_TEMPERATURE (mysql table & opehab log)
homematic:HMIP-WTH:6339e38e:000313C98CC36E:1#SET_POINT_TEMPERATURE (Paper UI)
Wandthermostat Wohnzimmer (“Thing” name)

mysql.persist

Strategies {
everyHour : "0 0 * * * ?"
everyDay  : "0 0 0 * * ?"
everyMinute : "0 * * * * ?"
default = everyChange
}

Items {
    * : strategy = everyChange, restoreOnStartup
    xxx : strategy = everyMinute
}

for xxx I already tried:
Wandthermostat*
homematic*
HMIP*
HMIP
*

“*” works fine - it logs the current value for all Items. The others won’t.

Do you have an idea what’s wrong?

Br
Stefan

2

First of all, persistence only works with Items, not Things. Things are not equal to Items. Things represent a physical/logical external device. A Thing has one or more Channels which describe that Thing’s commands. An Item is linked to a Thing via one of these Channels.

Rules, persistence, and Sitemaps only operate on Items, not Things.

Wandthermostat* in a .persist file means "apply the following strategy to all members of the Wandthermostat Group`. * in this context is not a wild card.

You must either list each Item individually in place of “xxx” (separated by commas) or you must create a Group and make all of your Items that should be saved by that DB and that strategy be members of the Group. Then use the “*” with the Group name.

Group gSetTemps
Number Valve1 "label" <icon> (gSetTemps) { channel="yada yada yada" }
Number Vavle2 "label" <icon> (gSetTemps) { channel="yada yada yada" }
...

gSetTemps* : strategy = everyHour

3 Likes
3

How do you create a group within the UI?

4

Go to Settings → Iems. Click the + icon and select “Create Item”. Choose Group as the “Type”