A query language for filtering and scoring of documents, inspired by the MongoDB query language and Solr. The query language consists of nested Elixir keyword list. Each component of the query consists of a key part and a value part. The key part is either a logic operator (and/or/not), or a reference to a field, the value part is either a plain value, or a value operator.

When a query is run against a document, where each term is scored individually and then summed. (This implies "or").

Example queries:

[title: "hoi"]
[title: [_eq: "hoi"]]
[_and: [name: "Arjan", age: 36]]
[_or: [name: "Arjan", age: 36]]
[_not: [title: "foo"]]

Full documentation can be found at https://hexdocs.pm/match_engine.

If available in Hex, the package can be installed by adding match_engine to your list of dependencies in mix.exs:

def deps do
  [
    {:match_engine, "~> 1.0"}
  ]
end