mirror of https://github.com/apache/openjpa.git
OPENJPA-1013: Add tests for multiselect()
git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@799432 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Pinaki Poddar
parent
9706a82960
commit
3ae614fc26
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@ -59,8 +59,8 @@ public abstract class CriteriaTest extends TestCase {
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protected static OpenJPAEntityManagerFactorySPI emf;
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protected static SQLAuditor auditor;
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CriteriaBuilder cb;
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EntityManager em;
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protected CriteriaBuilder cb;
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protected EntityManager em;
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protected static Class[] CLASSES = {
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Account.class,
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@ -38,6 +38,14 @@ public class Person {
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@ElementCollection
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private Set<String> nickNames;
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protected Person() {
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this("?");
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}
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public Person(String name) {
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setName(name);
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}
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public int getId() {
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return id;
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@ -0,0 +1,277 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.apache.openjpa.persistence.criteria.results;
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import java.lang.reflect.Array;
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import java.util.List;
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import javax.persistence.PersistenceException;
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import javax.persistence.Tuple;
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import javax.persistence.criteria.CriteriaQuery;
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import javax.persistence.criteria.Root;
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import org.apache.openjpa.persistence.criteria.CriteriaTest;
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import org.apache.openjpa.persistence.criteria.Person;
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import org.apache.openjpa.persistence.criteria.Person_;
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import org.apache.openjpa.persistence.test.AllowFailure;
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/**
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* Test variations of {@link CriteriaQuery#multiselect(java.util.List)} arguments.
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*
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* @author Pinaki Poddar
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*
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*/
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@AllowFailure(value=true, message="Tests:16 Errors:1 Failure:7")
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public class TestMultiselect extends CriteriaTest {
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private static final Class[] CLASSES = {Person.class};
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private static boolean initialized = false;
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@Override
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public void setUp() {
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super.setUp();
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if (!initialized) {
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createData();
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initialized = true;
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}
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}
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@Override
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protected Class[] getDomainClasses() {
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return CLASSES;
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}
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void createData() {
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em.getTransaction().begin();
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Person p = new Person("Test Result Shape");
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em.persist(p);
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em.getTransaction().commit();
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}
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/**
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* If the type of the criteria query is CriteriaQuery<Tuple>
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* (i.e., a criteria query object created by either the
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* createTupleQuery method or by passing a Tuple class argument
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* to the createQuery method), a Tuple object corresponding to
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* the elements of the list passed to the multiselect method
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* will be instantiated and returned for each row that results
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* from the query execution.
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* */
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public void testTupleQuery() {
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CriteriaQuery<Tuple> q = cb.createTupleQuery();
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Root<Person> p = q.from(Person.class);
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q.multiselect(p.get(Person_.name), p.get(Person_.id));
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assertResult(q, Tuple.class);
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}
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public void testTupleQueryExplicit() {
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CriteriaQuery<Tuple> q = cb.createQuery(Tuple.class);
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Root<Person> p = q.from(Person.class);
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q.multiselect(p.get(Person_.name), p.get(Person_.id));
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assertResult(q, Tuple.class);
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}
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//=======================================================================
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/**
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* If the type of the criteria query is CriteriaQuery<X> for
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* some user-defined class X (i.e., a criteria query object
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* created by passing a X class argument to the createQuery
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* method), then the elements of the list passed to the
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* multiselect method will be passed to the X constructor and
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* an instance of type X will be returned for each row.
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*/
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public void testUserResultQueryWithExplictProjectionOfConstructorArguments() {
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CriteriaQuery<Person> q = cb.createQuery(Person.class);
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Root<Person> p = q.from(Person.class);
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q.multiselect(p.get(Person_.name));
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assertResult(q, Person.class);
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}
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public void testUserResultQueryWithImplicitProjection() {
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CriteriaQuery<Person> q = cb.createQuery(Person.class);
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Root<Person> p = q.from(Person.class);
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assertResult(q, Person.class);
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}
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public void testUserResultQueryWithMismatchProjectionOfConstructorArguments() {
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CriteriaQuery<Person> q = cb.createQuery(Person.class);
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Root<Person> p = q.from(Person.class);
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q.multiselect(p.get(Person_.name), p.get(Person_.id));
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fail("Person has no constrcutor with (name,id)", q);
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}
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// ======================================================================
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/**
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* If the type of the criteria query is CriteriaQuery<X[]> for
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* some class X, an instance of type X[] will be returned for
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* each row. The elements of the array will correspond to the
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* elements of the list passed to the multiselect method.
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*/
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public void testUserClassArray() {
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CriteriaQuery<Person[]> q = cb.createQuery(Person[].class);
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Root<Person> p = q.from(Person.class);
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q.multiselect(p,p);
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assertResult(q, Person[].class, Person.class, Person.class);
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}
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public void testBasicClassArray() {
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CriteriaQuery<String[]> q = cb.createQuery(String[].class);
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Root<Person> p = q.from(Person.class);
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q.multiselect(p.get(Person_.name), p.get(Person_.name));
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assertResult(q, String[].class);
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}
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public void testTupleArray() {
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CriteriaQuery<Tuple[]> q = cb.createQuery(Tuple[].class);
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Root<Person> p = q.from(Person.class);
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q.multiselect(p.get(Person_.name), p.get(Person_.name));
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assertResult(q, Tuple[].class);
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}
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// =================================================================
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/**
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* If the type of the criteria query is CriteriaQuery<Object>
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* or if the criteria query was created without specifying a
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* type, and the list passed to the multiselect method contains
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* only a single element, an instance of type Object will be
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* returned for each row.
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*/
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public void testSingleObject() {
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CriteriaQuery<Object> q = cb.createQuery(Object.class);
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Root<Person> p = q.from(Person.class);
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q.multiselect(p);
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assertResult(q, Object.class);
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}
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public void testSingleObjectViaConstructor() {
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CriteriaQuery<Object> q = cb.createQuery(Object.class);
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Root<Person> p = q.from(Person.class);
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q.multiselect(cb.construct(Person.class, p.get(Person_.name)));
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assertResult(q, Object.class);
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}
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public void testSingleObjectAsProperty() {
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CriteriaQuery<Object> q = cb.createQuery(Object.class);
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Root<Person> p = q.from(Person.class);
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q.multiselect(p.get(Person_.name));
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assertResult(q, Object.class);
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}
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public void testSingleObjectImplicit() {
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CriteriaQuery<?> q = cb.createQuery();
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Root<Person> p = q.from(Person.class);
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q.multiselect(p);
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assertResult(q, Object.class);
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}
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public void testSingleObjectViaConstructorImplicit() {
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CriteriaQuery<?> q = cb.createQuery();
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Root<Person> p = q.from(Person.class);
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q.multiselect(cb.construct(Person.class, p.get(Person_.name)));
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assertResult(q, Object.class);
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}
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public void testSingleObjectAsPropertyImplicit() {
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CriteriaQuery<?> q = cb.createQuery();
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Root<Person> p = q.from(Person.class);
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q.multiselect(p.get(Person_.name));
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assertResult(q, Object.class);
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}
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// ================================================================================
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/**
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* If the type of the criteria query is CriteriaQuery<Object>
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* or if the criteria query was created without specifying a
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* type, and the list passed to the multiselect method contains
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* more than one element, an instance of type Object[] will be
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* instantiated and returned for each row. The elements of the
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* array will correspond to the elements of the list passed to
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* the multiselect method.
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*/
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public void testSingleObjectMultipleProjections() {
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CriteriaQuery<Object> q = cb.createQuery(Object.class);
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Root<Person> p = q.from(Person.class);
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q.multiselect(p.get(Person_.name), p.get(Person_.id));
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assertResult(q, Object[].class, String.class, Integer.class);
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}
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public void testSingleObjectMultipleProjectionsAndConstructor() {
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CriteriaQuery<Object> q = cb.createQuery(Object.class);
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Root<Person> p = q.from(Person.class);
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q.multiselect(cb.construct(Person.class, p.get(Person_.name)), p.get(Person_.id), p.get(Person_.name));
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assertResult(q, Object[].class, Person.class, Integer.class, String.class);
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}
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/**
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* An element of the list passed to the multiselect method
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* must not be a tuple- or array-valued compound selection item.
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*/
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// =============== assertions by result types ========================
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void assertResult(CriteriaQuery<?> q, Class<?> resultClass) {
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assertResult(q, resultClass, (Class<?>[])null);
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}
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/**
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* Assert the query result elements by their types
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*/
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void assertResult(CriteriaQuery<?> q, Class<?> resultClass, Class<?>... arrayElementClasses) {
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List<?> result = em.createQuery(q).getResultList();
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assertFalse(result.isEmpty());
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for (Object row : result) {
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assertTrue(row.getClass() + " does not match actual result " + resultClass, resultClass.isInstance(row));
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if (resultClass.isArray() && arrayElementClasses != null) {
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for (int i = 0; i < arrayElementClasses.length; i++) {
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Object element = Array.get(row, i);
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assertTrue(i + "-th array element " + arrayElementClasses[i] + " does not match actual result "
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+ element.getClass(), arrayElementClasses[i].isInstance(element));
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}
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}
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}
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}
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void fail(String msg, CriteriaQuery<?> q) {
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try {
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em.createQuery(q).getResultList();
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fail("Expected to fail " + msg);
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} catch (PersistenceException e) {
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// this is an expected exception
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}
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}
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}
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