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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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## Central Classes
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This module is almost entirely boilerplate, except the [QueryBasicInterface](java/nu/marginalia/query/QueryBasicInterface.java)
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class, which offers a REST API for querying the index.
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Much of the guts of the query service are in the [query-service](../../functions/search-query)
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module; which offers query parsing and an interface to the index service partitions.
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