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The query service parses search queries and delegates work to the
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index services.
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The [index-service](../index-service) speaks a lower level query specification language
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that is difficult to build an application out of. The query service exists as an interpreter
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to that format.
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## Web Interface
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The query service also offers a basic web interface for testing queries, or
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running the search engine as a white-label service without all the Marginalia Search
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specific stuff. This mode of operations is available through a `barebones` install.
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The web interface also offers a JSON API for machine-based queries.
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## Main Classes
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* [QueryService](src/main/java/nu/marginalia/query/QueryService.java) - The REST service implementation
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* [QueryGRPCService](src/main/java/nu/marginalia/query/QueryGRPCService.java) - The GRPC service implementation
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## See Also
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* [api/query-api](../../api/query-api)
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* [features-qs/query-parser](../../features-qs/query-parser)
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* [features-index/index-query](../../features-index/index-query)
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