#235 - Polishing.

Added test and tweaked documentation to clarify that other numeric types beyond `Integer` are admissible.
Split a test in order to have meaningful test names.

Original pull request: #238.

src/main/asciidoc/reference/r2dbc-repositories.adoc

@@ -142,9 +142,9 @@ Mono<Integer> setFixedFirstnameFor(String firstname, String lastname);
 
 The result of a modifying query can be:
 
-* `Void` to discard update count and await completion
+* `Void` to discard update count and await completion.
-* `Integer` emitting the affected rows count
+* `Integer` or another numeric type emitting the affected rows count.
-* `Boolean` to emit whether at least one row was updated
+* `Boolean` to emit whether at least one row was updated.
 
 The `@Modifying` annotation is only relevant in combination with the `@Query` annotation.
 Derived custom methods do not require this annotation.

src/test/java/org/springframework/data/r2dbc/repository/H2R2dbcRepositoryIntegrationTests.java

@@ -89,6 +89,14 @@ public class H2R2dbcRepositoryIntegrationTests extends AbstractR2dbcRepositoryIn
 		repository.updateManual(42).as(StepVerifier::create).expectNext(2L).verifyComplete();
 	}
 
+	@Test // gh-235
+	public void shouldReturnUpdateCountAsDouble() {
+
+		shouldInsertNewItems();
+
+		repository.updateManualAndReturnDouble(42).as(StepVerifier::create).expectNext(2.0).verifyComplete();
+	}
+
 	@Test // gh-235
 	public void shouldReturnUpdateSuccess() {
 
@@ -134,5 +142,9 @@ public class H2R2dbcRepositoryIntegrationTests extends AbstractR2dbcRepositoryIn
 		@Query("UPDATE legoset set manual = :manual")
 		@Modifying
 		Mono<Void> updateManualAndReturnNothing(int manual);
+
+		@Query("UPDATE legoset set manual = :manual")
+		@Modifying
+		Mono<Double> updateManualAndReturnDouble(int manual);
 	}
 }

src/test/java/org/springframework/data/r2dbc/repository/query/R2dbcQueryMethodUnitTests.java

@@ -72,6 +72,14 @@ public class R2dbcQueryMethodUnitTests {
 	}
 
 	@Test // gh-235
+	public void detectsNotModifyingQuery() throws Exception {
+
+		R2dbcQueryMethod queryMethod = queryMethod(SampleRepository.class, "differentTable");
+
+		assertThat(queryMethod.isModifyingQuery()).isFalse();
+	}
+
+	@Test
 	public void detectsTableNameFromRepoTypeIfReturnTypeNotAssignable() throws Exception {
 
 		R2dbcQueryMethod queryMethod = queryMethod(SampleRepository.class, "differentTable");
@@ -79,7 +87,6 @@ public class R2dbcQueryMethodUnitTests {
 
 		assertThat(metadata.getJavaType()).isAssignableFrom(Address.class);
 		assertThat(metadata.getTableName()).isEqualTo("contact");
-		assertThat(queryMethod.isModifyingQuery()).isFalse();
 	}
 
 	@Test(expected = IllegalArgumentException.class)