DATAES-946 - Support 'wildcard' field type.

Original PR: #571

Author: sothawo

Diff for: src/main/java/org/springframework/data/elasticsearch/annotations/FieldType.java

@@ -55,5 +55,7 @@ public enum FieldType {
 	/** @since 4.1 */
 	Rank_Feature, //
 	/** @since 4.1 */
-	Rank_Features //
+	Rank_Features, //
+	/** since 4.2 */
+	Wildcard //
 }

Diff for: src/test/java/org/springframework/data/elasticsearch/core/index/MappingBuilderIntegrationTests.java

@@ -257,7 +257,15 @@ void shouldWriteCorrectTermVectorValues() {
 		IndexOperations indexOps = operations.indexOps(TermVectorFieldEntity.class);
 		indexOps.create();
 		indexOps.putMapping();
+	}
+
+	@Test // DATAES-946
+	@DisplayName("should write wildcard field mapping")
+	void shouldWriteWildcardFieldMapping() {
 
+		IndexOperations indexOps = operations.indexOps(WildcardEntity.class);
+		indexOps.create();
+		indexOps.putMapping();
 	}
 
 	/**
@@ -647,4 +655,11 @@ static class TermVectorFieldEntity {
 		@Field(type = FieldType.Text,
 				termVector = TermVector.with_positions_offsets_payloads) private String with_positions_offsets_payloads;
 	}
+
+	@Data
+	@Document(indexName = "wildcard-test")
+	static class WildcardEntity {
+		@Nullable @Field(type = Wildcard) private String wildcardWithoutParams;
+		@Nullable @Field(type = Wildcard, nullValue = "WILD", ignoreAbove = 42) private String wildcardWithParams;
+	}
 }

Diff for: src/test/java/org/springframework/data/elasticsearch/core/index/MappingBuilderUnitTests.java

@@ -305,7 +305,7 @@ public void shouldUseIgnoreAbove() throws JSONException {
 		assertEquals(expected, mapping, false);
 	}
 
-	@Test // DATAES-621, DATAES-943
+	@Test // DATAES-621, DATAES-943, DATAES-946
 	public void shouldSetFieldMappingProperties() throws JSONException {
 		String expected = "{\n" + //
 				"        \"properties\": {\n" + //
@@ -399,6 +399,14 @@ public void shouldSetFieldMappingProperties() throws JSONException {
 				"            },\n" + //
 				"            \"eagerGlobalOrdinalsFalse\": {\n" + //
 				"                \"type\": \"text\"\n" + //
+				"            },\n" + //
+				"            \"wildcardWithoutParams\": {\n" + //
+				"                \"type\": \"wildcard\"\n" + //
+				"            },\n" + //
+				"            \"wildcardWithParams\": {\n" + //
+				"                \"type\": \"wildcard\",\n" + //
+				"                \"null_value\": \"WILD\",\n" + //
+				"                \"ignore_above\": 42\n" + //
 				"            }\n" + //
 				"        }\n" + //
 				"}\n"; //
@@ -891,6 +899,8 @@ static class FieldMappingParameters {
 		@Nullable @Field(type = Object, enabled = false) private String disabledObject;
 		@Nullable @Field(type = Text, eagerGlobalOrdinals = true) private String eagerGlobalOrdinalsTrue;
 		@Nullable @Field(type = Text, eagerGlobalOrdinals = false) private String eagerGlobalOrdinalsFalse;
+		@Nullable @Field(type = Wildcard) private String wildcardWithoutParams;
+		@Nullable @Field(type = Wildcard, nullValue = "WILD", ignoreAbove = 42) private String wildcardWithParams;
 	}
 
 	@Document(indexName = "test-index-configure-dynamic-mapping")
@@ -945,12 +955,10 @@ static class EntityWithSeqNoPrimaryTerm {
 
 	@Data
 	static class RankFeatureEntity {
-		@Id private String id;
 
+		@Id private String id;
 		@Field(type = FieldType.Rank_Feature) private Integer pageRank;
-
 		@Field(type = FieldType.Rank_Feature, positiveScoreImpact = false) private Integer urlLength;
-
 		@Field(type = FieldType.Rank_Features) private Map<String, Integer> topics;
 	}
 }