Setting up individual index imports

This procedure describes how to import (pull) entity data from a remote Niagara station, putting the data into the Supervisor’s SystemDb.

Prerequisites:

SystemDbService and SystemIndexService are already installed and running on the Supervisor station
Supervisor station has a connection to one or more JACE stations
You have the niagaraSystemIndex palette open.

Adding the NiagaraNetworkSystemIndexSource to the SystemIndexService on the Supervisor triggers a new NiagaraSystemIndexDeviceExt, named System Indexer, to be added to all Niagara stations in the NiagaraNetwork of the Supervisor station.

As of Niagara 4.13, you can also add and configure individual index imports against reachable stations. Similar to the NiagaraSystemIndexDeviceExt mixin, a ReachableStationSystemIndexDeviceExt, also named System Indexer, is automatically added as a mixin under any reachable station components. Therefore, you can follow similar steps to add a NiagaraSystemIndexImport to that location for setting up an individual index import from a particular reachable station.

NOTE: If using the SystemDbService from the Typical configuration folder in the niagaraSystemIndex palette, it is already configured with the NiagaraNetworkSystemIndexSource and so, the SystemIndexer device extension will already be added on any subordinate stations.

For cases where you have a particular JACE on which you want to run a different indexing operation, possibly using a select set of index queries, the SystemIndexer device extension can be a container for a NiagaraSystemIndexImport. The added (and enabled) NiagaraSystemIndexImport takes precedence over the Global Niagara Network Indexer because only one system indexer is allowed to run at any given time.

Perform the following steps:

In the Nav Tree, expand the Supervisor station’s NiagaraNetwork and a subordinate station.
Under the subordinate station, open a Property Sheet view of the SystemIndexer device extension.
From the palette, expand the Individual components folder, and drag the NiagaraSystemIndexImport component onto the SystemIndexer.
The NiagaraSystemIndexImport is added to the SystemIndexer device extension.
Expand the NiagaraSystemIndexImport, set the Enabled property to true.
This enables the index import. Once enabled, the NiagaraSystemIndexImport takes precedence over the Global Niagara Network Indexer.
If desired, expand Execution Time to schedule when the indexer is to run.
Set the Use Default Index Queries to false.
This configures the SystemIndexer to use only the custom index queries that you enter.
In the Custom Index Queries field, enter the desired queries.
If desired, to manually run the indexer. right-click NiagaraSystemIndexImport and select Actions > Execute
The indexer executes the custom queries.

On completion of the indexing operation, NiagaraSystemIndexImport component pulls the indexed entity data from the remote Niagara station to the Supervisor, putting the data into the Supervisor’s SystemDb.

CAUTION: Indexing a database is a memory- and CPU-intensive operation that affects the availability of your SystemDb and remote stations. Do not configure a re-index to occur too often so your SystemDb and remote stations can maintain availability throughout the day. If your SystemDb is indexed frequently, query performance degrades.

Setting up individual index imports

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