New capability

Author: svilen-mihaylov-elastic

x-pack/plugin/esql/qa/testFixtures/src/main/resources/multi-match-function.csv-spec

@@ -3,7 +3,7 @@
 #
 
 multiMatchWithField
-required_capability: multi_match_function
+required_capability: multi_match_unified_function
 
 // tag::multi-match-with-field[]
 FROM books
@@ -25,7 +25,7 @@ book_no:keyword | author:text
 ;
 
 testMultiMatchWithOptionsFuzziness
-required_capability: multi_match_function
+required_capability: multi_match_unified_function
 
 from books 
 | where multi_match(title, description, "Pings", {"fuzziness": 1})  
@@ -46,7 +46,7 @@ book_no:keyword
 ;
 
 testMultiMatchWithOptionsOperator
-required_capability: multi_match_function
+required_capability: multi_match_unified_function
 
 // tag::multi-match-with-named-function-params[]
 FROM books
@@ -61,7 +61,7 @@ The Hobbit or There and Back Again
 ;
 
 testMultiMatchWithOptionsMinimumShouldMatch
-required_capability: multi_match_function
+required_capability: multi_match_unified_function
 
 from books 
 | where multi_match(title, description, "here back again", {"minimum_should_match": 2, "operator": "OR"})
@@ -74,7 +74,7 @@ The Hobbit or There and Back Again
 ;
 
 testMultiMatchWithNonPushableDisjunctions
-required_capability: multi_match_function
+required_capability: multi_match_unified_function
 required_capability: full_text_functions_disjunctions_compute_engine
 
 from books 
@@ -97,7 +97,7 @@ book_no:keyword
 ;
 
 testMultiMatchPhraseQuery
-required_capability: multi_match_function
+required_capability: multi_match_unified_function
 
 from books 
 | where multi_match(title, description, "Lord of the rings", { "type": "phrase" } )
@@ -117,7 +117,7 @@ Return of the King Being the Third Part of The Lord of the Rings
 ;
 
 testMultiMatchPhrasePrefixQuery
-required_capability: multi_match_function
+required_capability: multi_match_unified_function
 
 from books 
 | where multi_match(title, "Lord of the ri", { "type": "phrase_prefix" } )

x-pack/plugin/esql/qa/testFixtures/src/main/resources/scoring.csv-spec

@@ -115,7 +115,7 @@ book_no:keyword | title:text
 ;
 
 testMultiMatchWithScore
-required_capability: multi_match_function
+required_capability: multi_match_unified_function
 required_capability: metadata_score
 
 from books metadata _score
@@ -128,7 +128,7 @@ book_no:keyword | title:text                                            | author
 ;
 
 testMultiMatchWithScore1
-required_capability: multi_match_function
+required_capability: multi_match_unified_function
 required_capability: metadata_score
 
 from books metadata _score
@@ -155,7 +155,7 @@ book_no:keyword | _score:double
 ;
 
 testMultiMatchWithScore2
-required_capability: multi_match_function
+required_capability: multi_match_unified_function
 required_capability: metadata_score
 
 from books metadata _score

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/action/EsqlCapabilities.java

@@ -937,6 +937,11 @@ public enum Cap {
          */
         MULTI_MATCH_FUNCTION(Build.current().isSnapshot()),
 
+        /**
+         * Support for unified match and multi-match functions.
+         */
+        MULTI_MATCH_UNIFIED_FUNCTION(Build.current().isSnapshot()),
+
         /**
          * Do {@code TO_LOWER} and {@code TO_UPPER} process all field values?
          */

x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/CsvTests.java

@@ -314,7 +314,7 @@ public final void test() throws Throwable {
             );
             assumeFalse(
                 "CSV tests cannot currently handle multi_match function that depends on Lucene",
-                testCase.requiredCapabilities.contains(EsqlCapabilities.Cap.MULTI_MATCH_FUNCTION.capabilityName())
+                testCase.requiredCapabilities.contains(EsqlCapabilities.Cap.MULTI_MATCH_UNIFIED_FUNCTION.capabilityName())
             );
 
             if (Build.current().isSnapshot()) {