/*
* Copyright 2009 Lukas Lang
*
* 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.castor.cpa.test.test2763;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.castor.cpa.test.framework.CPATestCase;
import org.castor.cpa.test.framework.xml.types.DatabaseEngineType;
import org.exolab.castor.jdo.Database;
import org.exolab.castor.jdo.PersistenceException;
/**
* Verifies correct detachment behavior using a version field.
*
* @author lukas.lang
*/
public final class VersionTest extends CPATestCase {
/** Name of the database. */
private static final String DBNAME = "test2763";
/** Mapping file for this test case. */
private static final String MAPPING = "/org/castor/cpa/test/test2763/mapping.xml";
/** The {@link Database} to use. */
private Database _db;
/**
* Constructor taking a name.
*
* @param name the name of the test.
*/
public VersionTest(final String name) {
super(name);
}
// Test are only included/excluded for engines that have been tested with this test suite.
public boolean include(final DatabaseEngineType engine) {
return (engine == DatabaseEngineType.DERBY)
|| (engine == DatabaseEngineType.HSQL)
|| (engine == DatabaseEngineType.MYSQL)
|| (engine == DatabaseEngineType.ORACLE)
|| (engine == DatabaseEngineType.POSTGRESQL);
}
@Override
public void setUp() throws Exception {
_db = getJDOManager(DBNAME, MAPPING).getDatabase();
_db.getCacheManager().expireCache();
}
/**
* Performs a simple long transaction with an update on an {@link Employee}
* instance.
*
* @throws PersistenceException if any persistence operation fails.
* @throws SQLException in case clear of tables fails.
*/
public void testDetachmentAndUpdate() throws PersistenceException, SQLException {
Employee employee = new Employee();
employee.setId(1);
employee.setName("unit-test-name-1");
employee.setVersion(0L);
// Persist book.
_db.begin();
_db.create(employee);
_db.commit();
// CHange the title.
employee.setName("new-unit-test-name-1");
// Update book.
_db.begin();
_db.update(employee);
_db.commit();
// Verify book.
_db.begin();
Employee loadedEmployee = _db.load(Employee.class, 1L);
_db.commit();
assertNotNull(loadedEmployee);
assertEquals("new-unit-test-name-1", loadedEmployee.getName());
clearTables();
_db.close();
}
/**
* Performs a create on an {@link Employee} instance and assures that a
* version is created.
*
* @throws PersistenceException if any persistence operation fails.
* @throws SQLException in case JDBC connection can not be obtained.
*/
public void testCreate() throws PersistenceException, SQLException {
Employee employee = new Employee();
employee.setId(1L);
employee.setName("unit-test-name-2");
// Persist book.
_db.begin();
_db.create(employee);
_db.commit();
_db.begin();
PreparedStatement prepareStatement =
_db.getJdbcConnection().prepareStatement(
"SELECT version FROM test2763_employee WHERE id=1");
ResultSet resultSet = prepareStatement.executeQuery();
assertNotNull(resultSet);
assertTrue(resultSet.next());
// Assure, version is set.
assertNotNull(resultSet.getLong(1));
assertTrue(1 < resultSet.getLong(1));
prepareStatement.close();
_db.commit();
clearTables();
_db.close();
}
/**
* Load an inserted {@link Employee} from the database.
*
* @throws PersistenceException in case persistence fails.
* @throws SQLException in case prepared statements fail.
*/
public void testLoad() throws PersistenceException, SQLException {
_db.begin();
// Natively insert an employee.
PreparedStatement prepareStatement =
_db.getJdbcConnection().prepareStatement(
"INSERT INTO test2763_employee (id, name, version) "
+ "VALUES (1, 'unit-test-name-3', 20000000000)");
prepareStatement.executeUpdate();
prepareStatement.close();
_db.commit();
// Load employee.
_db.begin();
Employee employee = _db.load(Employee.class, 1L);
_db.commit();
// Assure, all fields are set.
assertNotNull(employee);
assertEquals("unit-test-name-3", employee.getName());
assertEquals(20000000000L, employee.getVersion());
clearTables();
_db.close();
}
/**
* Loads an {@link Employee} and verifies whether object modification check
* on update works.
*
* @throws SQLException in case insert fails.
* @throws PersistenceException if any database operation fails.
* @throws InterruptedException in case sleep fails.
*/
public void testDirtyCheck() throws PersistenceException, SQLException,
InterruptedException {
Employee employee = new Employee();
employee.setId(1L);
employee.setName("unit-test-name-4");
// Persist book.
_db.begin();
_db.create(employee);
_db.commit();
// Load employee.
_db.begin();
employee = _db.load(Employee.class, 1L);
assertNotNull(employee);
assertEquals("unit-test-name-4", employee.getName());
_db.commit();
// Busy waiting to let ensure different time stamps.
Thread.sleep(10);
// Load employee again.
_db.begin();
Employee employee2 = _db.load(Employee.class, 1L);
// Modify employee and persist changes by committing.
employee2.setName("new-unit-test-name-4");
_db.commit();
// Try to update the old employee.
employee.setName("unit-test-should-fail-name");
try {
_db.begin();
_db.update(employee);
_db.commit();
fail("Object version is old! Object should be detected as modified!");
} catch (Exception e) {
// Dirty check works fine.
_db.rollback();
}
// Verify that only the first change was persisted..
_db.begin();
Employee loadedEmployee = _db.load(Employee.class, 1L);
assertNotNull(loadedEmployee);
assertEquals("new-unit-test-name-4", loadedEmployee.getName());
_db.commit();
clearTables();
_db.close();
}
/**
* Deletes all tuples from the tables 'detachment_employee'.
*
* @throws PersistenceException if JDBC connection cannot be obtained.
* @throws SQLException if execution fails.
*/
protected void clearTables() throws PersistenceException, SQLException {
_db.begin();
PreparedStatement deleteEmployees =
_db.getJdbcConnection().prepareStatement(
"DELETE FROM test2763_employee");
deleteEmployees.executeUpdate();
deleteEmployees.close();
_db.commit();
}
}