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[configuration] Revert #723 partially (#724) 

Signed-off-by: Christoph Weitkamp <github@christophweitkamp.de>
pull/734/head
Christoph Weitkamp 2018-06-18 14:40:05 +02:00 committed by Jerome Luckenbach
parent 13e9591338
commit 1f46424e1e
2 changed files with 3 additions and 4 deletions
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5
configuration/persistence.md
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@ -112,9 +112,8 @@ Below you will find a complete example persistence configuration file:
```java
// persistence strategies have a name and definition and are referred to in the "Items" section
Strategies {
everyMinute : "0 * * * * ?"
everyHour : "0 0 * * * ?"
everyDay : "0 0 0 * * ?"
everyHour : "0 0 * * * ?"
everyDay : "0 0 0 * * ?"
// if no strategy is specified for an Item entry below, the default list will be used
default = everyChange

2
configuration/sitemaps.md
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@ -454,7 +454,7 @@ See this [Tutorial](https://community.openhab.org/t/13761/1) for more details.
**Technical constraints and details:**
- When using rrd4j persistence, the strategy `everyMinute` (60 seconds) has to be used. Otherwise no data will be persisted (stored) and the chart will not be drawn properly.
- When using rrd4j persistence, the strategy `everyMinute` (60 seconds) has to be used. Otherwise no data will be persisted (stored) and the chart will not be drawn properly (see [rrd4j Persistence](https://www.openhab.org/addons/persistence/rrd4j)).
- The visibility of multiple Chart objects may be toggled to simulate changing the Chart period; non-visible Chart widgets are NOT generated behind the scenes until they become visible.
- When charting a group of item, make sure that every label is unique. If the label contains spaces, the first word of the label must be unique. Identical labels result in an empty chart.