Revert addition of wildcard field in 7.8 (#56331)

We've chosen to delay the release of the wildcard field, pending further development and testing

Author: markharwood

docs/reference/mapping/types.asciidoc

@@ -7,7 +7,7 @@ document:
 [float]
 === Core datatypes
 
-string::         <<text,`text`>>, <<keyword,`keyword`>> and <<wildcard,`wildcard`>>
+string::         <<text,`text`>> and <<keyword,`keyword`>>
 <<number>>::     `long`, `integer`, `short`, `byte`, `double`, `float`, `half_float`, `scaled_float`
 <<date>>::       `date`
 <<date_nanos>>:: `date_nanos`
@@ -135,5 +135,3 @@ include::types/token-count.asciidoc[]
 include::types/shape.asciidoc[]
 
 include::types/constant-keyword.asciidoc[]
-
-include::types/wildcard.asciidoc[]

docs/reference/mapping/types/wildcard.asciidoc

@@ -369,14 +369,14 @@ public Query fuzzyQuery(Object value, Fuzziness fuzziness, int prefixLength, int
     }
 
     public Query prefixQuery(String value, @Nullable MultiTermQuery.RewriteMethod method, QueryShardContext context) {
-        throw new QueryShardException(context, "Can only use prefix queries on keyword, text and wildcard fields - not on [" + name
+        throw new QueryShardException(context, "Can only use prefix queries on keyword and text fields - not on [" + name
             + "] which is of type [" + typeName() + "]");
     }
 
     public Query wildcardQuery(String value,
                                @Nullable MultiTermQuery.RewriteMethod method,
                                QueryShardContext context) {
-        throw new QueryShardException(context, "Can only use wildcard queries on keyword, text and wildcard fields - not on [" + name
+        throw new QueryShardException(context, "Can only use wildcard queries on keyword and text fields - not on [" + name
             + "] which is of type [" + typeName() + "]");
     }
 

server/src/main/java/org/elasticsearch/index/mapper/MappedFieldType.java

@@ -264,7 +264,7 @@ public static RangeQueryBuilder rangeQuery(String name) {
      * which matches any single character. Note this query can be slow, as it
      * needs to iterate over many terms. In order to prevent extremely slow WildcardQueries,
      * a Wildcard term should not start with one of the wildcards {@code *} or
-     * {@code ?}. (The wildcard field type however, is optimised for leading wildcards)
+     * {@code ?}.
      *
      * @param name  The field name
      * @param query The wildcard query string

server/src/main/java/org/elasticsearch/index/query/QueryBuilders.java

@@ -116,7 +116,7 @@ public void testNumeric() throws Exception {
         QueryShardContext context = createShardContext();
         QueryShardException e = expectThrows(QueryShardException.class,
                 () -> query.toQuery(context));
-        assertEquals("Can only use prefix queries on keyword, text and wildcard fields - not on [mapped_int] which is of type [integer]",
+        assertEquals("Can only use prefix queries on keyword and text fields - not on [mapped_int] which is of type [integer]",
                 e.getMessage());
     }
 
@@ -145,7 +145,7 @@ public void testParseFailsWithMultipleFields() throws IOException {
         e = expectThrows(ParsingException.class, () -> parseQuery(shortJson));
         assertEquals("[prefix] query doesn't support multiple fields, found [user1] and [user2]", e.getMessage());
     }
-    
+
     public void testRewriteIndexQueryToMatchNone() throws Exception {
         PrefixQueryBuilder query = prefixQuery("_index", "does_not_exist");
         QueryShardContext queryShardContext = createShardContext();

server/src/test/java/org/elasticsearch/index/query/PrefixQueryBuilderTests.java

@@ -816,7 +816,7 @@ public void testPrefixNumeric() throws Exception {
         QueryShardContext context = createShardContext();
         QueryShardException e = expectThrows(QueryShardException.class,
                 () -> query.toQuery(context));
-        assertEquals("Can only use prefix queries on keyword, text and wildcard fields - not on [mapped_int] which is of type [integer]",
+        assertEquals("Can only use prefix queries on keyword and text fields - not on [mapped_int] which is of type [integer]",
                 e.getMessage());
         query.lenient(true);
         query.toQuery(context); // no exception