# Query Parser End-user search query parsing tools used by the [search-service](../../services-core/search-service). ## Central Classes * [QueryTokenizer](src/main/java/nu/marginalia/query_parser/QueryTokenizer.java) * [QueryParser](src/main/java/nu/marginalia/query_parser/QueryParser.java) * [QueryPermutations](src/main/java/nu/marginalia/query_parser/QueryVariants.java) - here be dragons * [QueryVariants](src/main/java/nu/marginalia/query_parser/QueryVariants.java) - here be dragons