DATAMONGO-2633 - Fix json parsing of nested arrays in ParameterBindingDocumentCodec.

Original pull request: #888.

Author: christophstrobl

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/util/json/ParameterBindingDocumentCodec.java

@@ -336,15 +336,7 @@ private List<Object> readList(final BsonReader reader, final DecoderContext deco
 		reader.readStartArray();
 		List<Object> list = new ArrayList<>();
 		while (reader.readBsonType() != BsonType.END_OF_DOCUMENT) {
-
-			// Spring Data Customization START
-			Object listValue = readValue(reader, decoderContext);
-			if (listValue instanceof Collection) {
-				list.addAll((Collection) listValue);
-				break;
-			}
-			list.add(listValue);
-			// Spring Data Customization END
+			list.add(readValue(reader, decoderContext));
 		}
 		reader.readEndArray();
 		return list;

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/util/json/ParameterBindingJsonReaderUnitTests.java

@@ -349,6 +349,15 @@ public void shouldParseRegexWithPlaceholderCorrectly() {
 				.isEqualTo(Document.parse("{ $and: [{'fieldA': {$in: [/ABC.*/, /CDE.*F/]}}, {'fieldB': {$ne: null}}]}"));
 	}
 
+	@Test // DATAMONGO-2633
+	public void shouldParseNestedArrays() {
+
+		Document target = parse("{ 'stores.location' : { $geoWithin: { $centerSphere: [ [ ?0, 48.799029 ] , ?1 ] } } }",
+				1.948516D, 0.004D);
+		assertThat(target).isEqualTo(Document
+				.parse("{ 'stores.location' : { $geoWithin: { $centerSphere: [ [ 1.948516, 48.799029 ] , 0.004 ] } } }"));
+	}
+
 	private static Document parse(String json, Object... args) {
 
 		ParameterBindingJsonReader reader = new ParameterBindingJsonReader(json, args);