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package org.apache.openjpa.persistence.query; | |
import java.util.List; | |
import org.apache.openjpa.persistence.test.SingleEMTestCase; | |
import org.apache.openjpa.persistence.models.company.fetchlazy.ProductOrder; | |
import org.apache.openjpa.persistence.models.company.fetchlazy.LineItem; | |
import org.apache.openjpa.persistence.models.company.fetchlazy.Product; | |
import org.apache.openjpa.persistence.models.company.fetchlazy.Customer; | |
import org.apache.openjpa.persistence.models.company.fetchlazy.Address; | |
import org.apache.openjpa.persistence.models.company.fetchlazy.Company; | |
import org.apache.openjpa.persistence.models.company.fetchlazy.Employee; | |
import org.apache.openjpa.persistence.models.company.fetchlazy.PartTimeEmployee; | |
import org.apache.openjpa.persistence.models.company.fetchlazy.FullTimeEmployee; | |
import org.apache.openjpa.persistence.models.company.fetchlazy.Person; | |
public class TestDistinctQueries extends SingleEMTestCase { | |
public void setUp() { | |
setUp(Address.class, Company.class, Customer.class, Employee.class, | |
FullTimeEmployee.class, LineItem.class, PartTimeEmployee.class, | |
Person.class, Product.class, ProductOrder.class, CLEAR_TABLES); | |
ProductOrder order = new ProductOrder(); | |
LineItem item0 = new LineItem(); | |
LineItem item1 = new LineItem(); | |
LineItem item2 = new LineItem(); | |
order.getItems().add(item0); | |
order.getItems().add(item1); | |
order.getItems().add(item2); | |
em.getTransaction().begin(); | |
em.persist(order); | |
em.persist(item0); | |
em.persist(item1); | |
em.persist(item2); | |
em.getTransaction().commit(); | |
} | |
public void testDuplicateResultsInNonDistinctJoinFetchQuery() { | |
List l = em.createQuery("select o from LAZ_ProductOrder o " + | |
"left join fetch o.items").getResultList(); | |
assertEquals(3, l.size()); | |
} | |
public void testDuplicateResultsInNonDistinctJoinQuery() { | |
List l = em.createQuery("select o from LAZ_ProductOrder o " + | |
"left join o.items item").getResultList(); | |
assertEquals(3, l.size()); | |
} | |
public void testNoDuplicateResultsInDistinctQuery() { | |
List l = em.createQuery("select distinct o from LAZ_ProductOrder o " + | |
"left join o.items item").getResultList(); | |
assertEquals(1, l.size()); | |
} | |
public void testDuplicateResultsInNonDistinctConstructorJoinQuery() { | |
List l = em.createQuery("select new " + | |
"org.apache.openjpa.persistence.query.TestDistinctQueries$Holder(" + | |
"o.id) from LAZ_ProductOrder o " + | |
"left join o.items item").getResultList(); | |
assertEquals(3, l.size()); | |
} | |
public void testNoDuplicateResultsInDistinctConstructorQuery() | |
throws NoSuchMethodException { | |
List l = em.createQuery("select distinct new " + | |
"org.apache.openjpa.persistence.query.TestDistinctQueries$Holder(" + | |
"o.id) from LAZ_ProductOrder o " + | |
"left join o.items item").getResultList(); | |
assertEquals(1, l.size()); | |
} | |
public static class Holder { | |
public Holder(long id) { | |
// we don't actually do anything with the returned data | |
} | |
} | |
} |