This stage looks up rules that have been deployed to the COLLECTION_NAME_query_rewrite collection and matches them against the query. Matching rules that perform query rewriting are applied at this stage, while matching rules that perform response rewriting are applied by the Modify Response with Rules stage later in the pipeline.
To trigger a rule that contains a tag, specify the tagname in the request URL of the user search app. See Easily define triggers in tags for more information.
See Rules for additional details about how to configure this set of features. This stage supports asynchronous processing.
Although this stage is available without a Fusion license, it is only effective after creating rules in Fusion.

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Query pipeline stage condition examples

Stages can be triggered conditionally when a script in the Condition field evaluates to true. Some examples are shown below. Run this stage only for mobile clients: 
params.deviceType === "mobile"
Run this stage when debugging is enabled: 
params.debug === "true"
Run this stage when the query includes a specific term: 
params.q && params.q.includes("sale")
Run this stage when multiple conditions are met: 
request.hasParam("fusion-user-name") && request.getFirstParam("fusion-user-name").equals("SuperUser");
!request.hasParam("isFusionPluginQuery")
The first condition checks that the request parameter “fusion-user-name” is present and has the value “SuperUser”. The second condition checks that the request parameter “isFusionPluginQuery” is not present.

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Configuration

When entering configuration values in the UI, use unescaped characters, such as \t for the tab character. When entering configuration values in the API, use escaped characters, such as \\t for the tab character.