DATAMONGO-978 - Derived delete query should pass on type information.

We now pass on type information for derived delete queries to the according delete operation. This propagates the information correctly to the according Before and After events.

Before this change the type would have been set to null in case of non collection like method return type.

Original pull request: #199.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/AbstractMongoQuery.java

@@ -408,7 +408,7 @@ public abstract class AbstractMongoQuery implements RepositoryQuery {
 				return operations.findAllAndRemove(query, metadata.getJavaType());
 			}
 
-			WriteResult writeResult = operations.remove(query, metadata.getCollectionName());
+			WriteResult writeResult = operations.remove(query, metadata.getJavaType(), metadata.getCollectionName());
 			return writeResult != null ? writeResult.getN() : 0L;
 		}
 	}

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/query/AbstractMongoQueryUnitTests.java

@@ -54,7 +54,7 @@ import com.mongodb.WriteResult;
  * @author Oliver Gierke
  */
 @RunWith(MockitoJUnitRunner.class)
-public class AbstracMongoQueryUnitTests {
+public class AbstractMongoQueryUnitTests {
 
 	@Mock RepositoryMetadata metadataMock;
 	@Mock MongoOperations mongoOperationsMock;
@@ -88,7 +88,8 @@ public class AbstracMongoQueryUnitTests {
 
 		createQueryForMethod("deletePersonByLastname", String.class).setDeleteQuery(true).execute(new Object[] { "booh" });
 
-		verify(this.mongoOperationsMock, times(1)).remove(Matchers.any(Query.class), Matchers.eq("persons"));
+		verify(this.mongoOperationsMock, times(1)).remove(Matchers.any(Query.class), Matchers.eq(Person.class),
+				Matchers.eq("persons"));
 		verify(this.mongoOperationsMock, times(0)).find(Matchers.any(Query.class), Matchers.any(Class.class),
 				Matchers.anyString());
 	}
@@ -122,19 +123,21 @@ public class AbstracMongoQueryUnitTests {
 
 	/**
 	 * @see DATAMONGO-566
+	 * @see DATAMONGO-978
 	 */
 	@Test
 	public void testDeleteExecutionReturnsNrDocumentsDeletedFromWriteResult() {
 
 		when(writeResultMock.getN()).thenReturn(100);
-		when(this.mongoOperationsMock.remove(Matchers.any(Query.class), Matchers.eq("persons")))
+		when(this.mongoOperationsMock.remove(Matchers.any(Query.class), Matchers.eq(Person.class), Matchers.eq("persons")))
 				.thenReturn(writeResultMock);
 
 		MongoQueryFake query = createQueryForMethod("deletePersonByLastname", String.class);
 		query.setDeleteQuery(true);
 
 		assertThat(query.execute(new Object[] { "fake" }), is((Object) 100L));
-		verify(this.mongoOperationsMock, times(1)).remove(Matchers.any(Query.class), Matchers.eq("persons"));
+		verify(this.mongoOperationsMock, times(1)).remove(Matchers.any(Query.class), Matchers.eq(Person.class),
+				Matchers.eq("persons"));
 	}
 
 	private MongoQueryFake createQueryForMethod(String methodName, Class<?>... paramTypes) {