DATAJPA-499 - Querydsl now uses the null-handling configured on the Sort.Order.

We now propagate the null-handling hint defined in Order to an appropriate Querydsl null handling hint.

Original pull request: #82.

src/test/java/org/springframework/data/jpa/repository/support/QuerydslIntegrationTests.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright 2014 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.jpa.repository.support;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.data.domain.Sort;
+import org.springframework.data.jpa.domain.sample.User;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.mysema.query.jpa.JPQLQuery;
+import com.mysema.query.types.path.PathBuilder;
+
+/**
+ * Integration tests for {@link Querydsl}.
+ * 
+ * @author Thomas Darimont
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration({ "classpath:infrastructure.xml" })
+@Transactional
+public class QuerydslIntegrationTests {
+
+	@PersistenceContext EntityManager em;
+
+	Querydsl querydsl;
+	PathBuilder<User> userPath;
+	JPQLQuery userQuery;
+
+	@Before
+	public void setup() {
+
+		userPath = new PathBuilder<User>(User.class, "user");
+		querydsl = new Querydsl(em, userPath);
+		userQuery = querydsl.createQuery().from(userPath);
+	}
+
+	/**
+	 * @see DATAJPA-499
+	 */
+	@Test
+	public void defaultOrderingShouldNotGenerateAnNullOrderingHint() {
+
+		JPQLQuery result = querydsl.applySorting(new Sort(new Sort.Order("firstname")), userQuery);
+
+		assertThat(result, is(notNullValue()));
+		assertThat(result.toString(), is(not(anyOf(containsString("nulls first"), containsString("nulls last")))));
+	}
+}