openhab-docs/v2.2/administration/jsondb.html

1306 lines
43 KiB
HTML
Raw Permalink Blame History

This file contains ambiguous Unicode characters!

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!--<link rel="shortcut icon" href="https://www.openhab.org/favicon.png"></link>-->
<title>JsonDB Storage - openHAB 2 - Empowering the Smart Home</title>
<!-- CSS -->
<link type="text/css" rel="stylesheet" href="/v2.2/css/materialize.css" media="screen,projection" />
<link type="text/css" rel="stylesheet" href="/v2.2/css/pygments-jekyll-style.css" />
<link type="text/css" rel="stylesheet" href="/v2.2/css/styles.css" />
<link type="text/css" rel="stylesheet" href="/v2.2/css/openhab.css" />
<link type="text/css" rel="stylesheet" href="/v2.2/css/collapsible.css" />
<!-- Font -->
<link type="text/css" rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons" />
<link type="text/css" rel="stylesheet" href="https://fonts.googleapis.com/css?family=Lato:300,400,700" />
<link rel="canonical" href="https://docs.openhab.org/administration/jsondb.html" />
<script type="text/javascript">var gaProperty = 'UA-47717934-3';var disableStr = 'ga-disable-' + gaProperty;if (document.cookie.indexOf(disableStr + '=true') > -1) {window[disableStr] = true;}</script>
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-47717934-3', 'auto');
ga('set', 'anonymizeIp', true);
ga('send', 'pageview');
</script>
</head>
<body class="documentation">
<div id="header" class="navbar-fixed">
<nav role="navigation">
<div class="container">
<div class="nav-wrapper">
<a href="/v2.2/index.html"><img id="logo" src="/images/logo.png" /></a>
<a href="#" data-activates="nav-mobile" class="button-collapse"><i class="material-icons">menu</i></a>
<ul class="right hide-on-med-and-down">
<li><a href="/tutorials/index.html">Tutorials</a></li>
<li><a href="/v2.2/introduction.html">User Manual</a></li>
<li><a href="/developers/index.html">Developer Guide</a></li>
<li><a target="_blank" href="https://community.openhab.org">Community Forum</a></li>
<li><a target="_blank" href="https://github.com/openhab">GitHub</a></li>
<li class="search"><i class="material-icons">search</i></li>
<li class="search">
<form method="GET" id="searchform" class="search-form" action="/search">
<input id="query" name="q" type="text" class="search-form-input" placeholder="search" />
</form>
</li>
</ul>
<ul id="nav-mobile" class="side-nav">
<li><a href="/v2.2/index.html">Home</a></li>
<li><a href="/tutorials/index.html">Tutorials</a></li>
<li><a href="/v2.2/introduction.html">User Manual</a></li>
<li><a href="/developers/index.html">Developer Guide</a></li>
<li><a target="_blank" href="https://community.openhab.org">Community Forum</a></li>
<li><a target="_blank" href="https://github.com/openhab">GitHub</a></li>
<li class="search">
<form method="GET" id="searchformmob" class="search-form" action="/search">
<input id="querymob" name="q" type="text" class="search-form-input" placeholder="search" />
</form>
</li>
</ul>
</div>
</div>
</nav>
</div>
<section id="documentation" class="text content-wrapper">
<div class="container">
<div class="side-nav-wrapper">
<ul class="nav">
<li><a href="/v2.2/introduction.html">Introduction</a></li>
<li><a href="/v2.2/concepts/index.html">Concepts</a>
<ul>
<li><a href="/v2.2/concepts/index.html">Overview</a></li>
<hr />
<li><a href="/v2.2/concepts/things.html">Things</a></li>
<li><a href="/v2.2/concepts/items.html">Items</a></li>
<li><a href="/v2.2/concepts/discovery.html">Inbox &amp; Discovery</a></li>
<li><a href="/v2.2/concepts/audio.html">Audio &amp; Voice</a></li>
</ul>
</li>
<li><a href="/v2.2/installation/index.html">Installation</a>
<ul>
<li><a href="/v2.2/installation/index.html">Overview</a></li>
<hr />
<li><a href="/v2.2/installation/linux.html">Linux</a></li>
<li><a href="/v2.2/installation/windows.html">Windows</a></li>
<li><a href="/v2.2/installation/macosx.html">Mac OS X</a></li>
<hr />
<li><a href="/v2.2/installation/openhabian.html">openHABian</a></li>
<li><a href="/v2.2/installation/docker.html">Docker</a></li>
<hr />
<li><a href="/v2.2/installation/rasppi.html">Raspberry Pi</a></li>
<li><a href="/v2.2/installation/pine.html">Pine A64</a></li>
<li><a href="/v2.2/installation/synology.html">Synology DiskStation</a></li>
<li><a href="/v2.2/installation/qnap.html">QNAP NAS</a></li>
<hr />
<li><a href="/v2.2/installation/security.html">Security &amp; Remote Access</a></li>
<li><a href="http://www.myopenhab.org">myopenHAB</a></li>
</ul>
</li>
<li><a href="/v2.2/configuration/index.html">Configuration</a>
<ul>
<li><a href="/v2.2/configuration/index.html">Overview</a></li>
<hr />
<li><a href="/v2.2/configuration/things.html">Things</a></li>
<li><a href="/v2.2/configuration/items.html">Items</a></li>
<li><a href="/v2.2/configuration/sitemaps.html">Sitemaps</a></li>
<li><a href="/v2.2/configuration/transform.html">Transformations</a></li>
<li><a href="/v2.2/configuration/persistence.html">Persistence</a></li>
<li><a href="/v2.2/configuration/rules-dsl.html">Rules</a></li>
<li><a href="/v2.2/configuration/jsr223.html">JSR223 Scripting</a>
<ul>
<li><a href="/v2.2/configuration/jsr223.html">Overview</a>
<hr />
<li><a href="/v2.2/configuration/jsr223-js.html">Javascript</a></li>
<li><a href="/v2.2/configuration/jsr223-jython.html">Jython</a></li>
</ul>
</li>
<li><a href="/v2.2/configuration/services.html">Services</a></li>
<hr />
<li><a href="/v2.2/configuration/packages.html">Initial Setup Packages</a></li>
<li><a href="/v2.2/configuration/homebuilder.html">Home Builder</a></li>
<li><a href="/v2.2/configuration/paperui.html">Paper UI</a></li>
<li><a href="/v2.2/configuration/habmin.html">HABmin</a></li>
<li><a href="/v2.2/configuration/habpanel.html">HABPanel</a></li>
<li><a href="/v2.2/configuration/rules-ng.html">Rules (Experimental)</a></li>
<li><a href="/v2.2/configuration/editors.html">Editors</a></li>
<hr />
<li><a href="/v2.2/configuration/multimedia.html">Audio &amp; Voice</a></li>
</ul>
</li>
<li><a href="/v2.2/addons/index.html">Add-ons</a>
<ul>
<li><a href="/v2.2/addons/index.html">Overview</a></li>
<hr />
<li><a href="/v2.2/addons/bindings.html">Bindings</a>
<ul>
<li><a href="/v2.2/addons/bindings.html">Overview</a></li>
<hr />
<li><a href="/v2.2/addons/bindings/airquality/readme.html">Air Quality</a></li>
<li><a href="/v2.2/addons/bindings/alarmdecoder1/readme.html">Alarm Decoder</a></li>
<li><a href="/v2.2/addons/bindings/allplay/readme.html">AllPlay</a></li>
<li><a href="/v2.2/addons/bindings/amazondashbutton/readme.html">Amazon Dash Button</a></li>
<li><a href="/v2.2/addons/bindings/anel1/readme.html">Anel NET-PwrCtrl</a></li>
<li><a href="/v2.2/addons/bindings/astro/readme.html">Astro</a></li>
<li><a href="/v2.2/addons/bindings/atlona/readme.html">Atlona</a></li>
<li><a href="/v2.2/addons/bindings/autelis/readme.html">Autelis Pool Control</a></li>
<li><a href="/v2.2/addons/bindings/avmfritz/readme.html">AVM FRITZ!</a></li>
<li><a href="/v2.2/addons/bindings/bigassfan/readme.html">BigAssFan</a></li>
<li><a href="/v2.2/addons/bindings/boschindego/readme.html">Bosch Indego</a></li>
<li><a href="/v2.2/addons/bindings/bticino1/readme.html">Bticino</a></li>
<li><a href="/v2.2/addons/bindings/caldav-command1/readme.html">CalDAV Command</a></li>
<li><a href="/v2.2/addons/bindings/caldav-personal1/readme.html">CalDAV Personal</a></li>
<li><a href="/v2.2/addons/bindings/chromecast/readme.html">Chromecast</a></li>
<li><a href="/v2.2/addons/bindings/cm11a/readme.html">Cm11a (X10 controller)</a></li>
<li><a href="/v2.2/addons/bindings/comfoair1/readme.html">ComfoAir</a></li>
<li><a href="/v2.2/addons/bindings/coolmasternet/readme.html">CoolMasterNet</a></li>
<li><a href="/v2.2/addons/bindings/denon1/readme.html">Denon</a></li>
<li><a href="/v2.2/addons/bindings/digitalstrom/readme.html">digitalSTROM</a></li>
<li><a href="/v2.2/addons/bindings/dlinksmarthome/readme.html">D-Link Smart Home</a></li>
<li><a href="/v2.2/addons/bindings/dmx/readme.html">DMX</a></li>
<li><a href="/v2.2/addons/bindings/dscalarm/readme.html">DSC Alarm</a></li>
<li><a href="/v2.2/addons/bindings/dsmr1/readme.html">DSMR</a></li>
<li><a href="/v2.2/addons/bindings/ebus1/readme.html">eBUS</a></li>
<li><a href="/v2.2/addons/bindings/ecobee1/readme.html">Ecobee</a></li>
<li><a href="/v2.2/addons/bindings/ecotouch1/readme.html">EcoTouch</a></li>
<li><a href="/v2.2/addons/bindings/ekey1/readme.html">ekey</a></li>
<li><a href="/v2.2/addons/bindings/energenie1/readme.html">Energenie</a></li>
<li><a href="/v2.2/addons/bindings/enocean1/readme.html">EnOcean</a></li>
<li><a href="/v2.2/addons/bindings/enphaseenergy1/readme.html">Enphase Energy</a></li>
<li><a href="/v2.2/addons/bindings/epsonprojector1/readme.html">Epson Projector</a></li>
<li><a href="/v2.2/addons/bindings/exec/readme.html">Exec</a></li>
<li><a href="/v2.2/addons/bindings/expire1/readme.html">Expire</a></li>
<li><a href="/v2.2/addons/bindings/fatekplc1/readme.html">Fatek PLC</a></li>
<li><a href="/v2.2/addons/bindings/feed/readme.html">Feed</a></li>
<li><a href="/v2.2/addons/bindings/feican/readme.html">Feican</a></li>
<li><a href="/v2.2/addons/bindings/folding/readme.html">Folding@home</a></li>
<li><a href="/v2.2/addons/bindings/freebox/readme.html">Freebox</a></li>
<li><a href="/v2.2/addons/bindings/freeswitch1/readme.html">FreeSWITCH</a></li>
<li><a href="/v2.2/addons/bindings/fritzbox1/readme.html">Fritz!Box</a></li>
<li><a href="/v2.2/addons/bindings/fritzboxtr0641/readme.html">Fritzbox (using TR064 protocol)</a></li>
<li><a href="/v2.2/addons/bindings/fs201/readme.html">FS20</a></li>
<li><a href="/v2.2/addons/bindings/fsinternetradio/readme.html">FS Internet Radio</a></li>
<li><a href="/v2.2/addons/bindings/garadget1/readme.html">Garadget</a></li>
<li><a href="/v2.2/addons/bindings/gardena/readme.html">Gardena</a></li>
<li><a href="/v2.2/addons/bindings/gc100ir1/readme.html">Global Cache IR</a></li>
<li><a href="/v2.2/addons/bindings/globalcache/readme.html">GlobalCache</a></li>
<li><a href="/v2.2/addons/bindings/harmonyhub/readme.html">Logitech Harmony Hub</a></li>
<li><a href="/v2.2/addons/bindings/hdanywhere/readme.html">HDanywhere</a></li>
<li><a href="/v2.2/addons/bindings/hdpowerview/readme.html">Hunter Douglas PowerView</a></li>
<li><a href="/v2.2/addons/bindings/heatmiser1/readme.html">Heatmiser</a></li>
<li><a href="/v2.2/addons/bindings/homematic/readme.html">Homematic</a></li>
<li><a href="/v2.2/addons/bindings/http1/readme.html">HTTP</a></li>
<li><a href="/v2.2/addons/bindings/hue/readme.html">Philips Hue</a></li>
<li><a href="/v2.2/addons/bindings/icloud/readme.html">iCloud</a></li>
<li><a href="/v2.2/addons/bindings/ihc1/readme.html">IHC / ELKO</a></li>
<li><a href="/v2.2/addons/bindings/insteonplm1/readme.html">Insteon PLM</a></li>
<li><a href="/v2.2/addons/bindings/intertechno1/readme.html">Intertechno</a></li>
<li><a href="/v2.2/addons/bindings/ipp/readme.html">IPP</a></li>
<li><a href="/v2.2/addons/bindings/ipx8001/readme.html">IPX800</a></li>
<li><a href="/v2.2/addons/bindings/irtrans1/readme.html">IRTrans</a></li>
<li><a href="/v2.2/addons/bindings/jeelink/readme.html">Jeelink</a></li>
<li><a href="/v2.2/addons/bindings/jointspace1/readme.html">jointSPACE</a></li>
<li><a href="/v2.2/addons/bindings/keba/readme.html">Keba</a></li>
<li><a href="/v2.2/addons/bindings/knx1/readme.html">KNX</a></li>
<li><a href="/v2.2/addons/bindings/kodi/readme.html">Kodi</a></li>
<li><a href="/v2.2/addons/bindings/kostalinverter/readme.html">Kostal Inverter</a></li>
<li><a href="/v2.2/addons/bindings/koubachi1/readme.html">Koubachi</a></li>
<li><a href="/v2.2/addons/bindings/lcn1/readme.html">LCN</a></li>
<li><a href="/v2.2/addons/bindings/lgtv1/readme.html">LG TV</a></li>
<li><a href="/v2.2/addons/bindings/lgtvserial/readme.html">LG TV control using serial protocol</a></li>
<li><a href="/v2.2/addons/bindings/lgwebos/readme.html">LG webOS</a></li>
<li><a href="/v2.2/addons/bindings/lifx/readme.html">LIFX</a></li>
<li><a href="/v2.2/addons/bindings/lirc/readme.html">LIRC</a></li>
<li><a href="/v2.2/addons/bindings/loxone/readme.html">Loxone</a></li>
<li><a href="/v2.2/addons/bindings/lutron/readme.html">Lutron</a></li>
<li><a href="/v2.2/addons/bindings/max/readme.html">MAX!</a></li>
<li><a href="/v2.2/addons/bindings/maxcul1/readme.html">MAX!CUL</a></li>
<li><a href="/v2.2/addons/bindings/meteostick/readme.html">Meteostick</a></li>
<li><a href="/v2.2/addons/bindings/miele/readme.html">Miele@home</a></li>
<li><a href="/v2.2/addons/bindings/mihome/readme.html">Xiaomi Mi Smart Home</a></li>
<li><a href="/v2.2/addons/bindings/milight/readme.html">Milight/Easybulb/Limitless</a></li>
<li><a href="/v2.2/addons/bindings/minecraft/readme.html">Minecraft</a></li>
<li><a href="/v2.2/addons/bindings/mios1/readme.html">MiOS Bridge</a></li>
<li><a href="/v2.2/addons/bindings/mochadx101/readme.html">Mochad X10</a></li>
<li><a href="/v2.2/addons/bindings/modbus1/readme.html">Modbus</a></li>
<li><a href="/v2.2/addons/bindings/mqtt1/readme.html">MQTT</a></li>
<li><a href="/v2.2/addons/bindings/mqttitude1/readme.html">OwnTracks (formerly MQTTitude)</a></li>
<li><a href="/v2.2/addons/bindings/myq1/readme.html">Chamberlain MyQ</a></li>
<li><a href="/v2.2/addons/bindings/neohub1/readme.html">NeoHub</a></li>
<li><a href="/v2.2/addons/bindings/nest/readme.html">Nest</a></li>
<li><a href="/v2.2/addons/bindings/netatmo/readme.html">Netatmo</a></li>
<li><a href="/v2.2/addons/bindings/network/readme.html">Network</a></li>
<li><a href="/v2.2/addons/bindings/networkupstools1/readme.html">Network UPS Tools</a></li>
<li><a href="/v2.2/addons/bindings/nibeheatpump1/readme.html">Nibe Heatpump</a></li>
<li><a href="/v2.2/addons/bindings/nikobus1/readme.html">Nikobus</a></li>
<li><a href="/v2.2/addons/bindings/nikohomecontrol/readme.html">Niko Home Control</a></li>
<li><a href="/v2.2/addons/bindings/novelanheatpump1/readme.html">Novelan/Luxtronic Heat Pump</a></li>
<li><a href="/v2.2/addons/bindings/ntp/readme.html">NTP</a></li>
<li><a href="/v2.2/addons/bindings/oceanic/readme.html">Oceanic</a></li>
<li><a href="/v2.2/addons/bindings/onebusaway/readme.html">OneBusAway</a></li>
<li><a href="/v2.2/addons/bindings/onewire1/readme.html">OneWire</a></li>
<li><a href="/v2.2/addons/bindings/onkyo/readme.html">Onkyo</a></li>
<li><a href="/v2.2/addons/bindings/openenergymonitor1/readme.html">Open Energy Monitor</a></li>
<li><a href="/v2.2/addons/bindings/opensprinkler/readme.html">OpenSprinkler</a></li>
<li><a href="/v2.2/addons/bindings/orvibo/readme.html">Orvibo</a></li>
<li><a href="/v2.2/addons/bindings/owserver1/readme.html">OWServer</a></li>
<li><a href="/v2.2/addons/bindings/panasonictv1/readme.html">Panasonic TV</a></li>
<li><a href="/v2.2/addons/bindings/piface1/readme.html">Piface</a></li>
<li><a href="/v2.2/addons/bindings/pioneeravr/readme.html">PioneerAVR Configuration</a></li>
<li><a href="/v2.2/addons/bindings/plex1/readme.html">Plex</a></li>
<li><a href="/v2.2/addons/bindings/plugwise/readme.html">Plugwise</a></li>
<li><a href="/v2.2/addons/bindings/powermax1/readme.html">Visonic Powermax</a></li>
<li><a href="/v2.2/addons/bindings/pulseaudio/readme.html">Pulseaudio</a></li>
<li><a href="/v2.2/addons/bindings/regoheatpump/readme.html">RegoHeatPump</a></li>
<li><a href="/v2.2/addons/bindings/rfxcom/readme.html">RFXCOM</a></li>
<li><a href="/v2.2/addons/bindings/rme/readme.html">RME</a></li>
<li><a href="/v2.2/addons/bindings/rotelra1x/readme.html">Rotel Amplifier</a></li>
<li><a href="/v2.2/addons/bindings/russound/readme.html">Russound</a></li>
<li><a href="/v2.2/addons/bindings/rwesmarthome1/readme.html">RWE SmartHome</a></li>
<li><a href="/v2.2/addons/bindings/samsungac1/readme.html">Samsung Air Conditioner</a></li>
<li><a href="/v2.2/addons/bindings/samsungtv/readme.html">Samsung TV</a></li>
<li><a href="/v2.2/addons/bindings/sapp1/readme.html">Picnet Sapp</a></li>
<li><a href="/v2.2/addons/bindings/satel1/readme.html">Satel Integra Alarm System</a></li>
<li><a href="/v2.2/addons/bindings/sensebox/readme.html">senseBox</a></li>
<li><a href="/v2.2/addons/bindings/serial1/readme.html">Serial</a></li>
<li><a href="/v2.2/addons/bindings/serialbutton/readme.html">Serial Button</a></li>
<li><a href="/v2.2/addons/bindings/silvercrestwifisocket/readme.html">Silvercrest Wifi Plug</a></li>
<li><a href="/v2.2/addons/bindings/sleepiq/readme.html">SleepIQ</a></li>
<li><a href="/v2.2/addons/bindings/smaenergymeter/readme.html">SMA Energy Meter</a></li>
<li><a href="/v2.2/addons/bindings/snmp1/readme.html">SNMP</a></li>
<li><a href="/v2.2/addons/bindings/sonance1/readme.html">Sonance</a></li>
<li><a href="/v2.2/addons/bindings/sonos/readme.html">Sonos</a></li>
<li><a href="/v2.2/addons/bindings/souliss1/readme.html">Souliss</a></li>
<li><a href="/v2.2/addons/bindings/squeezebox/readme.html">Logitech Squeezebox</a></li>
<li><a href="/v2.2/addons/bindings/swegonventilation1/readme.html">Swegon Ventilation</a></li>
<li><a href="/v2.2/addons/bindings/synopanalyzer/readme.html">Synop Analyzer</a></li>
<li><a href="/v2.2/addons/bindings/systeminfo/readme.html">Systeminfo</a></li>
<li><a href="/v2.2/addons/bindings/tankerkoenig/readme.html">Tankerkönig</a></li>
<li><a href="/v2.2/addons/bindings/tcp1/readme.html">TCP & UDP</a></li>
<li><a href="/v2.2/addons/bindings/tellstick/readme.html">Tellstick</a></li>
<li><a href="/v2.2/addons/bindings/tesla/readme.html">Tesla</a></li>
<li><a href="/v2.2/addons/bindings/tinkerforge1/readme.html">TinkerForge</a></li>
<li><a href="/v2.2/addons/bindings/toon/readme.html">Toon</a></li>
<li><a href="/v2.2/addons/bindings/tplinksmarthome/readme.html">TPLinkSmartHome</a></li>
<li><a href="/v2.2/addons/bindings/tradfri/readme.html">TRÅDFRI</a></li>
<li><a href="/v2.2/addons/bindings/upb1/readme.html">UPB</a></li>
<li><a href="/v2.2/addons/bindings/urtsi/readme.html">Somfy URTSI II</a></li>
<li><a href="/v2.2/addons/bindings/vitotronic/readme.html">Vitotronic</a></li>
<li><a href="/v2.2/addons/bindings/weather1/readme.html">Weather</a></li>
<li><a href="/v2.2/addons/bindings/weatherunderground/readme.html">WeatherUnderground</a></li>
<li><a href="/v2.2/addons/bindings/wemo/readme.html">Belkin Wemo</a></li>
<li><a href="/v2.2/addons/bindings/wifiled/readme.html">WiFi LED</a></li>
<li><a href="/v2.2/addons/bindings/windcentrale/readme.html">Windcentrale</a></li>
<li><a href="/v2.2/addons/bindings/wol1/readme.html">Wake-on-LAN</a></li>
<li><a href="/v2.2/addons/bindings/xbmc1/readme.html">XBMC binding (for KODI) (1.x)</a></li>
<li><a href="/v2.2/addons/bindings/yahooweather/readme.html">YahooWeather</a></li>
<li><a href="/v2.2/addons/bindings/yamahareceiver/readme.html">Yamahareceiver</a></li>
<li><a href="/v2.2/addons/bindings/zigbee/readme.html">ZigBee</a></li>
<li><a href="/v2.2/addons/bindings/zoneminder/readme.html">Zoneminder</a></li>
<li><a href="/v2.2/addons/bindings/zwave/readme.html">ZWave</a></li>
<li><a href="/v2.2/addons/bindings/zway/readme.html">Z-Way</a></li>
</ul>
</li>
<li><a href="/v2.2/addons/uis.html">User Interfaces</a>
<ul>
<li><a href="/v2.2/addons/uis.html">Overview</a></li>
<hr />
<li><a href="/v2.2/addons/uis/basic/readme.html">Basic UI</a></li>
<li><a href="/v2.2/addons/uis/classic/readme.html">Classic UI</a></li>
<li><a href="/v2.2/addons/uis/habmin/readme.html">HABmin</a></li>
<li><a href="/v2.2/addons/uis/habpanel/doc/habpanel.html"></a></li>
<li><a href="/v2.2/addons/uis/habpanel/readme.html">HABPanel</a></li>
<li><a href="/v2.2/addons/uis/paper/readme.html">Paper UI</a></li>
<hr />
<li><a href="/v2.2/addons/uis/apps/android.html">Android App</a></li>
<li><a href="/v2.2/addons/uis/apps/ios.html">iOS App</a></li>
<li><a href="/v2.2/addons/uis/apps/windows.html">Windows 10 App</a></li>
<hr />
<li><a href="/v2.2/addons/iconsets/classic/readme.html">Iconset (classic)</a></li>
</ul>
</li>
<li><a href="/v2.2/addons/persistence.html">Persistence</a>
<ul>
<li><a href="/v2.2/addons/persistence.html">Overview</a></li>
<hr />
<li><a href="/v2.2/addons/persistence/influxdb/readme.html">InfluxDB (0.9 and newer)</a></li>
<li><a href="/v2.2/addons/persistence/jdbc/readme.html">JDBC</a></li>
<li><a href="/v2.2/addons/persistence/jpa/readme.html">Java Persistence API (JPA)</a></li>
<li><a href="/v2.2/addons/persistence/mapdb/readme.html">mapdb</a></li>
<li><a href="/v2.2/addons/persistence/mqtt/readme.html">MQTT</a></li>
<li><a href="/v2.2/addons/persistence/mysql/readme.html">MySQL</a></li>
<li><a href="/v2.2/addons/persistence/rrd4j/readme.html">rrd4j</a></li>
</ul>
</li>
<li><a href="/v2.2/addons/actions.html">Actions</a>
<ul>
<li><a href="/v2.2/addons/actions.html">Overview</a></li>
<hr />
<li><a href="/v2.2/addons/actions/ecobee/readme.html">Ecobee</a></li>
<li><a href="/v2.2/addons/actions/mail/readme.html">Mail</a></li>
<li><a href="/v2.2/addons/actions/mios/readme.html">MiOS</a></li>
<li><a href="/v2.2/addons/actions/mqtt/readme.html">MQTT</a></li>
<li><a href="/v2.2/addons/actions/nma/readme.html">NotifyMyAndroid</a></li>
<li><a href="/v2.2/addons/actions/pebble/readme.html">Pebble</a></li>
<li><a href="/v2.2/addons/actions/prowl/readme.html">Prowl</a></li>
<li><a href="/v2.2/addons/actions/pushbullet/readme.html">Pushbullet</a></li>
<li><a href="/v2.2/addons/actions/pushover/readme.html">Pushover</a></li>
<li><a href="/v2.2/addons/actions/pushsafer/readme.html">Pushsafer</a></li>
<li><a href="/v2.2/addons/actions/satel/readme.html">Satel</a></li>
<li><a href="/v2.2/addons/actions/telegram/readme.html">Telegram</a></li>
<li><a href="/v2.2/addons/actions/twitter/readme.html">Twitter</a></li>
<li><a href="/v2.2/addons/actions/xbmc/readme.html">XBMC</a></li>
<li><a href="/v2.2/addons/actions/xmpp/readme.html">XMPP</a></li>
</ul>
</li>
<li><a href="/v2.2/addons/transformations.html">Transformations</a>
<ul>
<li><a href="/v2.2/addons/transformations.html">Overview</a></li>
<hr />
<li><a href="/v2.2/addons/transformations/exec/readme.html">Exec</a></li>
<li><a href="/v2.2/addons/transformations/javascript/readme.html">JavaScript</a></li>
<li><a href="/v2.2/addons/transformations/jsonpath/readme.html">JsonPath</a></li>
<li><a href="/v2.2/addons/transformations/map/readme.html">Map</a></li>
<li><a href="/v2.2/addons/transformations/regex/readme.html">RegEx</a></li>
<li><a href="/v2.2/addons/transformations/scale/readme.html">Scale</a></li>
<li><a href="/v2.2/addons/transformations/xpath/readme.html">XPath</a></li>
<li><a href="/v2.2/addons/transformations/xslt/readme.html">XSLT</a></li>
</ul>
</li>
<li><a href="/v2.2/addons/voices.html">Voice Services</a>
<ul>
<li><a href="/v2.2/addons/voices.html">Overview</a></li>
<hr />
<li><a href="/v2.2/addons/voices/mactts/readme.html">MacOS Text-to-Speech</a></li>
<li><a href="/v2.2/addons/voices/marytts/readme.html">Mary Text-to-Speech</a></li>
<li><a href="/v2.2/addons/voices/voicerss/readme.html">VoiceRSS Text-to-Speech</a></li>
</ul>
</li>
<hr />
<li><a href="/v2.2/addons/io.html">3rd Party Integration</a>
<ul>
<li><a href="/v2.2/addons/io.html">Overview</a></li>
<hr />
<li><a href="/v2.2/addons/ios/alexa-skill/readme.html">Amazon Alexa Skill</a></li>
<li><a href="/v2.2/addons/ios/dropbox/readme.html">Dropbox Synchronization</a></li>
<li><a href="/v2.2/addons/ios/gcal/readme.html">Google Calendar Scheduler</a></li>
<li><a href="/v2.2/addons/ios/homekit/readme.html">HomeKit Add-on</a></li>
<li><a href="/v2.2/addons/ios/hueemulation/readme.html">openHAB Hue Emulation</a></li>
<li><a href="/v2.2/addons/ios/imperihome/readme.html">ImperiHome integration service</a></li>
<li><a href="/v2.2/addons/ios/mycroft-skill/readme.html">Mycroft AI Skill</a></li>
<li><a href="/v2.2/addons/ios/openhabcloud/readme.html">openHAB Cloud Connector</a></li>
<hr />
<li><a href="/v2.2/configuration/restdocs.html">REST API</a></li>
<li><a href="/v2.2/configuration/eclipseiotmarket.html">Eclipse IoT Marketplace</a></li>
<li><a href="http://www.myopenhab.org/" target="_blank">IFTTT</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="/v2.2/administration/index.html">Advanced Functionality</a>
<ul>
<li><a href="/v2.2/administration/index.html">Overview</a></li>
<hr />
<li><a href="/v2.2/administration/console.html">Console</a></li>
<li><a href="/v2.2/administration/runtime.html">Runtime Commands</a></li>
<li><a href="/v2.2/administration/bundles.html">Bundle Management</a></li>
<li><a href="/v2.2/administration/logging.html">Logging</a></li>
<hr />
<li><a href="/v2.2/administration/jsondb.html">JsonDB Storage</a></li>
</ul>
</li>
<li><a href="/v2.2/appendix/help.html">Community Guidance</a>
<ul>
<li><a href="/v2.2/appendix/help.html">Finding Help &amp; FAQs</a></li>
<li><a href="/v2.2/appendix/contributing.html">Contributing</a></li>
</ul>
</li>
</ul>
</div>
<div id="versioning" class="row valign-wrapper">
<div class="col s12 right-align">
<ul id="dropdown-versioning" class="dropdown-content">
<li><a href="/v2.2/../administration/jsondb.html">latest version</a></li>
<li><a href="/v2.2/administration/jsondb.html">v2.2<i class="tiny material-icons right">lens</i></a></li>
<li><a href="/v2.2/../v2.1/administration/jsondb.html">v2.1</a></li>
</ul>
<a class="btn dropdown-button grey lighten-1" href="#!" data-activates="dropdown-versioning" title="Select which version of this openHAB documentation article you want to read.">
Switch Article Version<i class="material-icons right">arrow_drop_down</i>
</a>
</div>
</div>
<div class="content">
<h1 id="jsondb-storage">JsonDB Storage</h1>
<p>JsonDB provides a system database for storage of configuration data. All configuration data stored into the system through the REST interface that is used by the user interfaces will be stored into the JsonDB. JsonDB provides a high performance, human readable data store that is primarily meant for system use but can be edited manually, or stored in a version control system such as Git.</p>
<h2 id="technical-overview">Technical Overview</h2>
<p>The system stores different data into separate tables. JsonDB maps these tables into separate files - in this way each file contains a different type of data (eg. Things, Items, Links). The system also keeps a number of backups in a <code class="highlighter-rouge">backup</code> folder. Each time a file is updated, the current version will be moved to the <code class="highlighter-rouge">backup</code> folder and timestamped so that the system can retain the most recent files. By default the last 5 copies of each file are retained. When the system loads data from the file system, should it find that a file is corrupted it will attempt to open the most recent backup - it will try each backup in turn until a file is correctly read, or the number of files is reached.</p>
<p>To improve performance and reduce disk use all file writes are deferred for a few hundred milliseconds. This ensures that if there are multiple updates of the database in a short time, the system will only write these updates to the file system after the group of updates completes. If the system gets into a loop such that it is continually updating configuration information in the database, JsonDB will write a file every minute. These timers can be configured by the user along with the number of backup files retained.</p>
<p>It is worth noting that data is only read from the file system when the table is first created - this is normally on system startup. After this the data is retained in memory and only written to file when there are changes.</p>
<h2 id="manual-editing">Manual Editing</h2>
<p>Data is stored in a “pretty” format to make it more human readable, and is sorted so ordering is not random (important when a version control system is used). It is therefore editable by advanced users who might want to do a search and replace on item names etc.</p>
<p>If you manually edit the file you must take responsibility for ensuring it is correctly formatted. A Json format checker (such as jsonlin.com) can be used to check the format and this should ensure that the file can be correctly read. It doesnt however ensure that the correct format is used - users wanting to edit a specific table are advised to first configure the system with the UI and then use the format generated by the UI as a template for subsequent additions and changes. Most data stored in the database is written in a way that should be understandable by someone with good knowledge of the system.</p>
<p>As stated above, the files are only read during system startup - therefore if you change a file you will need to stop openHAB, make your changes and restart the system for the changes to take effect.</p>
<p>Example file -:</p>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>
</code></pre></div></div>
</div>
</div>
</section>
<footer>
<div class="container">
<div class="row">
<div class="col s12 m7">
Copyright &copy; 2017 by the <a href="https://github.com/openhab">openHAB Community</a> and the <a href="http://www.openhabfoundation.org/">openHAB&nbsp;Foundation&nbsp;e.V.</a>
</div>
<div class="col s12 m5">
<ul class="list-inline right-align">
<li><a href="/imprint.html">Imprint</a></li>
<li><a href="/privacy.html">Privacy Policy</a></li>
<li><a href="http://www.openhab.org">openHAB Website</a></li>
<li><a href=# onclick="printPage()">Print This Page</a></li>
</ul>
</div>
</div>
</div>
</footer>
<script src="/v2.2/js/jquery.min.js"></script>
<script src="/v2.2/js/jquery.scrollme.min.js"></script>
<script src="/v2.2/js/jquery.sticky.js"></script>
<script src="/v2.2/js/materialize.min.js"></script>
<script src="/v2.2/js/init.js"></script>
<script src="/v2.2/js/functions.js"></script>
</body>
</html>