Polishing.

Adopt rebase changes. Update documentation to reflect default changes.

Original pull request: #4957
See: #4920

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/MongoCustomConversions.java

@@ -337,7 +337,7 @@ public class MongoCustomConversions extends org.springframework.data.convert.Cus
 		 * @since 3.4
 		 * @deprecated since 4.2. Use {@link #withPropertyValueConversions(PropertyValueConversions)} instead.
 		 */
-		@Deprecated(since = "4.2.0")
+		@Deprecated(since = "4.2")
 		public MongoConverterConfigurationAdapter setPropertyValueConversions(PropertyValueConversions valueConversions) {
 			return withPropertyValueConversions(valueConversions);
 		}
@@ -457,15 +457,17 @@ public class MongoCustomConversions extends org.springframework.data.convert.Cus
 	public enum BigDecimalRepresentation {
 
 		/**
-		 * @deprecated since 5.0.0 — storing values as {@link Number#toString() String} retains precision,
-		 * but prevents efficient range queries. Prefer {@link #DECIMAL128} for better query support.
+		 * @deprecated since 5.0. Storing values as {@link Number#toString() String} retains precision, but prevents
+		 *             efficient range queries. Prefer {@link #DECIMAL128} for better query support.
 		 */
-		@Deprecated(since = "5.0.0")
+		@Deprecated(since = "5.0")
 		STRING,
 
 		/**
-		 * Store numbers using {@link org.bson.types.Decimal128}. Requires MongoDB Server 3.4 or later.
+		 * Store numbers using {@link org.bson.types.Decimal128} (default). Requires MongoDB Server 3.4 or later.
 		 */
 		DECIMAL128
+
 	}
+
 }

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/BigDecimalToStringConvertingTemplateTests.java

@@ -15,9 +15,9 @@
  */
 package org.springframework.data.mongodb.core;
 
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.springframework.data.mongodb.core.query.Criteria.where;
-import static org.springframework.data.mongodb.core.query.Query.query;
+import static org.assertj.core.api.Assertions.*;
+import static org.springframework.data.mongodb.core.query.Criteria.*;
+import static org.springframework.data.mongodb.core.query.Query.*;
 
 import java.math.BigDecimal;
 import java.math.BigInteger;
@@ -25,7 +25,7 @@ import java.util.List;
 
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.extension.ExtendWith;
+
 import org.springframework.data.auditing.IsNewAwareAuditingHandler;
 import org.springframework.data.mapping.context.PersistentEntities;
 import org.springframework.data.mongodb.core.MongoTemplateTests.TypeWithNumbers;
@@ -35,7 +35,6 @@ import org.springframework.data.mongodb.core.query.Criteria;
 import org.springframework.data.mongodb.core.query.Query;
 import org.springframework.data.mongodb.core.query.Update;
 import org.springframework.data.mongodb.test.util.Client;
-import org.springframework.data.mongodb.test.util.MongoClientExtension;
 import org.springframework.data.mongodb.test.util.MongoTestTemplate;
 
 import com.mongodb.client.MongoClient;
@@ -45,7 +44,6 @@ import com.mongodb.client.MongoClient;
  *
  * @author Christoph Strobl
  */
-@ExtendWith(MongoClientExtension.class)
 public class BigDecimalToStringConvertingTemplateTests {
 
 	public static final String DB_NAME = "mongo-template-tests";
@@ -77,7 +75,7 @@ public class BigDecimalToStringConvertingTemplateTests {
 	});
 
 	@AfterEach
-	public void cleanUp() {
+	void cleanUp() {
 		template.flush();
 	}
 
@@ -157,8 +155,7 @@ public class BigDecimalToStringConvertingTemplateTests {
 
 		Update update = new Update()//
 				.min("bigIntegerVal", new BigInteger("700")) //
-				.min("bigDeciamVal", new BigDecimal("800")) //
-		;
+				.min("bigDeciamVal", new BigDecimal("800"));
 
 		template.updateFirst(query(where("id").is(twn.id)), update, TypeWithNumbers.class);
 

src/main/antora/modules/ROOT/pages/mongodb/mapping/custom-conversions.adoc

@@ -14,7 +14,7 @@ public class Payment {
 
   @Id String id; <1>
 
-  @Field(targetType = FieldType.DECIMAL128) <2>
+  @Field(targetType = FieldType.STRING) <2>
   BigDecimal value;
 
   Date date; <3>
@@ -26,15 +26,15 @@ public class Payment {
 ----
 {
   "_id"   : ObjectId("5ca4a34fa264a01503b36af8"), <1>
-  "value" : NumberDecimal(2.099),                 <2>
+  "value" : "2.099",                              <2>
   "date"  : ISODate("2019-04-03T12:11:01.870Z")   <3>
 }
 ----
 <1> String _id_ values that represent a valid `ObjectId` are converted automatically. See xref:mongodb/template-crud-operations.adoc#mongo-template.id-handling[How the `_id` Field is Handled in the Mapping Layer]
 for details.
-<2> The desired target type is explicitly defined as `Decimal128` which translates to `NumberDecimal`.
+<2> The desired target type is explicitly defined as `String`.
 Otherwise, the
-`BigDecimal` value would have been turned into a `String`.
+`BigDecimal` value would have been turned into a `Decimal128`.
 <3> `Date` values are handled by the MongoDB driver itself are stored as `ISODate`.
 ====
 
@@ -111,11 +111,12 @@ class MyMongoConfiguration extends AbstractMongoClientConfiguration {
 MongoDB in its early days did not have support for large numeric values such as `BigDecimal`.
 To persist `BigDecimal` and `BigInteger` values, Spring Data MongoDB converted values their `String` representation.
 This approach had several downsides due to lexical instead of numeric comparison for queries, updates, etc.
+
 With MongoDB Server 3.4, `org.bson.types.Decimal128` offers a native representation for `BigDecimal` and `BigInteger`.
-As off Spring Data MongoDB 5.0 the default representation of those types moved to MongoDB native `org.bson.types.Decimal128` as well.
-You can still use the to the deprecated `String` variant by configuring the big decimal representation in `MongoCustomConversions` through `MongoCustomConversions.create(config -> config.bigDecimal(BigDecimalRepresentation.STRING))`.
+As of Spring Data MongoDB 5.0. the default representation of those types moved to MongoDB native `org.bson.types.Decimal128`.
+You can still use the to the previous `String` variant by configuring the big decimal representation in `MongoCustomConversions` through `MongoCustomConversions.create(config -> config.bigDecimal(BigDecimalRepresentation.STRING))`.
 
 [NOTE]
 ====
-Very large values, though being valid in their java, might exceed the maximum bit length of `org.bson.types.Decimal128` in their store native representation.
+Very large values, though being a valid `BigDecimal` or `BigInteger`, might exceed the maximum bit length of `org.bson.types.Decimal128` in their store native representation.
 ====

src/main/antora/modules/ROOT/pages/mongodb/mapping/mapping.adoc

@@ -546,7 +546,7 @@ Like for `BigDecimal`, which is represented as `String` instead of `Decimal128`,
 ----
 public class Balance {
 
-  @Field(targetType = DECIMAL128)
+  @Field(targetType = STRING)
   private BigDecimal value;
 
   // ...
@@ -559,14 +559,14 @@ You may even consider your own, custom annotation.
 ----
 @Target(ElementType.FIELD)
 @Retention(RetentionPolicy.RUNTIME)
-@Field(targetType = FieldType.DECIMAL128)
-public @interface Decimal128 { }
+@Field(targetType = FieldType.STRING)
+public @interface AsString { }
 
 // ...
 
 public class Balance {
 
-  @Decimal128
+  @AsString
   private BigDecimal value;
 
   // ...