Fake detect double click in OpenHAB

default.rules

// source https://groups.google.com/d/msg/openhab/TnIqLpjIfZo/KFIcvgpxwL4J

import org.openhab.core.library.types.*
import org.openhab.core.persistence.*
import org.openhab.model.script.actions.*
import org.joda.time.*

var DateTime lastClickWallSwitch = new DateTime()

rule "Wall Switch Count Double Click"
    when
        Item Wall_Switch_Count_Switch received update
    then
        if (now.isBefore(lastClickWallSwitch.plusSeconds(1))) {
            logInfo("DoubleClick", "lastClickWallSwitch double click detected")
        } else {
            logInfo("DoubleClick", "lastClickWallSwitch single click detected")
        }
        lastClickWallSwitch = new DateTime()
end