| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.openjpa.persistence.criteria; |
| |
| import javax.persistence.criteria.CriteriaQuery; |
| import javax.persistence.metamodel.Attribute; |
| |
| import org.apache.openjpa.jdbc.conf.JDBCConfiguration; |
| import org.apache.openjpa.jdbc.sql.DB2Dictionary; |
| import org.apache.openjpa.jdbc.sql.DBDictionary; |
| import org.apache.openjpa.jdbc.sql.OracleDictionary; |
| import org.apache.openjpa.persistence.OpenJPAEntityManagerSPI; |
| |
| /** |
| * Tests different styles for query by example. |
| * |
| * @author Pinaki Poddar |
| * |
| */ |
| public class TestQueryByExample extends CriteriaTest { |
| DBDictionary dict = null; |
| |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| |
| // If using an Oracle DB, use sql92 syntax in order to get a correct |
| // comparison of SQL. This may not work on Oracle JDBC drivers |
| // prior to 10.x |
| OpenJPAEntityManagerSPI ojem = (OpenJPAEntityManagerSPI)em; |
| dict = ((JDBCConfiguration) ojem.getConfiguration()) |
| .getDBDictionaryInstance(); |
| if (dict instanceof OracleDictionary) { |
| dict.setJoinSyntax("sql92"); |
| } |
| } |
| |
| @Override |
| public void tearDown() throws Exception { |
| dict = null; |
| super.tearDown(); |
| } |
| |
| public void testBasicFieldsWithNonDefaultValue() { |
| String jpql = "SELECT e FROM Employee e WHERE e.rating=1 AND e.salary=1100"; |
| |
| CriteriaQuery<Employee> q = cb.createQuery(Employee.class); |
| |
| Employee example = new Employee(); |
| example.setSalary(1000+100); |
| example.setRating(1); |
| |
| ComparisonStyle style = null; |
| Attribute<?,?>[] excludes = null; |
| q.where(cb.qbe(q.from(Employee.class), example, style, excludes)); |
| |
| assertEquivalence(q, jpql); |
| } |
| |
| public void testExcludeBasicFieldWithNonDefaultValue() { |
| String jpql = "SELECT e FROM Employee e WHERE e.salary=1100"; |
| |
| CriteriaQuery<Employee> q = cb.createQuery(Employee.class); |
| |
| Employee example = new Employee(); |
| example.setSalary(1000+100); |
| example.setRating(1); |
| |
| ComparisonStyle style = null; |
| Attribute<?,?>[] excludes = {Employee_.rating}; |
| q.where(cb.qbe(q.from(Employee.class), example, style, excludes)); |
| |
| assertEquivalence(q, jpql); |
| } |
| |
| public void testBasicFieldWithDefaultValueExcludedByDefaultStyle() { |
| String jpql = "SELECT e FROM Employee e WHERE e.rating=1"; |
| |
| CriteriaQuery<Employee> q = cb.createQuery(Employee.class); |
| |
| Employee example = new Employee(); |
| example.setRating(1); |
| |
| ComparisonStyle style = null; |
| Attribute<?,?>[] excludes = null; |
| q.where(cb.qbe(q.from(Employee.class), example, style, excludes)); |
| |
| executeAndCompareSQL(q, "WHERE (t0.rating = ?)"); |
| assertEquivalence(q, jpql); |
| } |
| |
| public void testBasicFieldWithDefaultValueCanBeIncludedByStyle() { |
| String jpql = "SELECT e FROM Employee e WHERE e.rating=1 AND e.salary=1100"; |
| |
| CriteriaQuery<Employee> q = cb.createQuery(Employee.class); |
| |
| Employee example = new Employee(); |
| example.setRating(1); |
| |
| ComparisonStyle style = cb.qbeStyle(); |
| Attribute<?,?>[] excludes = null; |
| q.where(cb.qbe(q.from(Employee.class), example, style.setExcludeDefault(false), excludes)); |
| |
| executeAndCompareSQL(q, "WHERE (t0.rating = ? AND t0.salary = ?)"); |
| assertEquivalence(q, jpql); |
| } |
| |
| public void testRelationFieldWithNonDefaultValue() { |
| String jpql = "SELECT e FROM Employee e WHERE e.rating=1 AND e.salary=1100 AND e.department.name='ExampleDept'"; |
| |
| CriteriaQuery<Employee> q = cb.createQuery(Employee.class); |
| |
| Employee example = new Employee(); |
| example.setSalary(1100); |
| example.setRating(1); |
| Department dept = new Department(); |
| dept.setName("ExampleDept"); |
| example.setDepartment(dept); |
| |
| |
| ComparisonStyle style = cb.qbeStyle(); |
| Attribute<?,?>[] excludes = null; |
| q.where(cb.qbe(q.from(Employee.class), example, style, excludes)); |
| |
| executeAndCompareSQL(q, "WHERE (t1.name = ? AND t0.rating = ? AND t0.salary = ?)"); |
| } |
| |
| public void testRelationFieldWithNullValueIncluded() { |
| String jpql = "SELECT e FROM Employee e WHERE e.rating=1 AND e.salary=1100 AND e.department IS NULL"; |
| |
| CriteriaQuery<Employee> q = cb.createQuery(Employee.class); |
| |
| Employee example = new Employee(); |
| example.setName("ExampleEmployee"); |
| example.setSalary(1100); |
| example.setRating(1); |
| example.setDepartment(null); |
| |
| ComparisonStyle style = cb.qbeStyle(); |
| Attribute<?,?>[] excludes = {Employee_.frequentFlierPlan, Employee_.manager, Employee_.spouse}; |
| q.where(cb.qbe(q.from(Employee.class), example, style.setExcludeNull(false).setExcludeDefault(false), |
| excludes)); |
| |
| executeAndCompareSQL(q, "WHERE (1 <> 1 AND t0.DEPARTMENT_DEPTNO IS NULL " |
| + "AND t0.name = ? AND t0.rating = ? AND t0.salary = ?)"); |
| } |
| |
| public void testEmbeddedField() { |
| String jpql = "SELECT e FROM Employee e WHERE e.rating=1 AND e.salary=1100 AND e.department IS NULL"; |
| |
| CriteriaQuery<Employee> q = cb.createQuery(Employee.class); |
| |
| Employee example = new Employee(); |
| example.setName("ExampleEmployee"); |
| example.setSalary(1100); |
| example.setRating(1); |
| Contact contact = new Contact(); |
| Address address = new Address(); |
| address.setCity("Plano"); |
| address.setState("TX"); |
| address.setCountry("USA"); |
| contact.setAddress(address); |
| example.setContactInfo(contact); |
| |
| ComparisonStyle style = cb.qbeStyle(); |
| Attribute<?,?>[] excludes = {Employee_.department, Employee_.frequentFlierPlan, |
| Employee_.manager, Employee_.spouse}; |
| q.where(cb.qbe(q.from(Employee.class), example, style, excludes)); |
| |
| executeAndCompareSQL(q, "WHERE (t1.city = ? AND t1.country = ? AND t1.state = ? " |
| + "AND t0.name = ? AND t0.rating = ? AND t0.salary = ?)"); |
| } |
| |
| @Override |
| void executeAndCompareSQL(CriteriaQuery<?> q, String expected) { |
| auditor.clear(); |
| em.createQuery(q).getResultList(); |
| assertEquals(1,auditor.getSQLs().size()); |
| String actual = extract("WHERE", auditor.getSQLs().get(0)); |
| if (dict instanceof DB2Dictionary) |
| return; |
| assertEquals(expected, actual); |
| } |
| |
| String extract(String key, String s) { |
| int index = s.indexOf(key); |
| return index == -1 ? "" : s.substring(index); |
| } |
| } |