Multi-Match Query
==========================

A query that creates a match type query for each field provided and wraps all the match queries in a DisjunctionMaxQuery.

Proto definition:

.. code-block::

   message MultiMatchQuery {
       // Type defining the execution behavior of the match.
       enum MatchType {
           // Finds documents which match any field, but uses the _score from the best field.
           BEST_FIELDS = 0;
           // Runs a MatchPhrasePrefixQuery query on each field and uses the _score from the best field.
           PHRASE_PREFIX = 1;
           // Finds documents that match across multiple fields, as if they were a single field.
           CROSS_FIELDS = 2;
       }

       repeated string fields = 1; // Fields in the document to query.
       string query = 2; // The text to query with.
       map<string, float> fieldBoosts = 3; // Boosts for each field, if any.
       MatchOperator operator = 4; // Boolean logic used to interpret text in the query. The possible values are SHOULD (default) and MUST.
       int32 minimumNumberShouldMatch = 5; // Minimum number of optional clauses that must match.
       Analyzer analyzer = 6; // Analyzer used to analyze the query. If not provided, the default search analyzer for the field would be used instead.
       FuzzyParams fuzzyParams = 7; // Parameters to set the fuzziness of the query
       float tieBreakerMultiplier = 8; // The score of each non-maximum match query disjunct for a document will be multiplied by this weight and added into the final score.
       // Type defining match behavior of query.
       MatchType type = 9;
       // Edit distance between respective positions of tokens generated by analyzing this query and the positions of terms in a document, applies to PHRASE_PREFIX type matching.
       int32 slop = 10;
       // Maximum number of terms to which the prefix token will expand when using PHRASE_PREFIX matching. Defaults to 50.
       int32 maxExpansions = 11;
   }