Recurring items in the definition in Openhab

Tutorials & Examples Solutions
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Hello.
Have you encountered having to copy items in items, change their name or configuration?
The openhab code does not allow this possibility very much, resp. I couldn’t find a good solution via code in openhab.
That’s why I tried another way, which I will now describe.

First, You need to have the utility installed: when-changed. The utility can be found in other things as well.

Second, Verify that the envsubst command is available on your system.

Third, Write a script that will generate an output file from the input configuration file, which I chose in the format csv - delimiter “;”, and the input template file. All necessary values from the configuration file will be added to the output file.
The contents of the config_openhab.sh file can look like this:

#!/bin/bash
export DOLLAR='$'
while IFS=';' read -r v1 v2 v3 v4 v5 v6 v7 v8 v9
do
    export f1=$v1
    export f2=$v2
    export f3=$v3
    export f4=$v4
    export f5=$v5
    export f6=$v6
    export f7=$v7
    export f8=$v8
    export f9=$v9
	envsubst < $2
done

Note. If the $ character is required in the template, then $ {DOLLAR} must be used instead.
Example of template file:

// ${f2}
String ${f1}EventName "Time ${f1} [%s]" <calendar> (CalendarEvents) { caldavPersonal="calendar:program type:ACTIVE eventNr:1 value:NAME filter-name:'${f1}'"}
DateTime ${f1}StartTime "Start ${f1} [%1${DOLLAR}tT, %1${DOLLAR}td.%1${DOLLAR}tm.%1${DOLLAR}tY]" <calendar> (TimeEvents) { caldavPersonal="calendar:program type:ACTIVE eventNr:1 value:START filter-name:'${f1}'"}

Example of config file:

Summer;event summer
Vacantion;event vacantion

Fourth - finally, it is then necessary to ensure that the script is run (ideally immediately after startup):

when-changed -s /srv/openhab2-conf/items/*.input -c ‘config_openhab.sh %f %f.template > %f.items’

The script will look at all files with the *.input extension to see if they have changed. If any * .input file has changed, it searches for the *.input.template file and generates the *.input.items file. Openhab ignores other files in the folder items than they have the suffix * .items.

Finally, the idea of the whole: It has one universal solution for all households, which can be configured according to the user’s needs.