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CreateManager


Difference between version 80 and version 69:

At line 8 changed 2 lines.
In the context of [AppFuse], this is called a Manager class. It's main responsibility to act as a bridge between the persistence (DAO) layer and the
web layer. It's also useful for de-coupling your presentation layer from your database layer (i.e. for Swing apps). Managers should also be where you put any business logic for your application.
In the context of [AppFuse], this is called a Manager class. Its main responsibility is to act as a bridge between the persistence (DAO) layer and the web layer. It's also useful for de-coupling your presentation layer from your database layer (i.e. for Swing apps). Managers should also be where you put any business logic for your application.
At line 26 changed 1 line.
This class should extend [BaseManagerTestCase|http://raibledesigns.com/downloads/appfuse/api/org/appfuse/service/BaseManagerTestCase.java.html], which already exists in the ''service'' package. The parent class (BaseManagerTestCase) serves the same functionality as the BaseDaoTestCase - to load a properties file that has the same name as your *Test.class, as well as to initialize Spring's ApplicationContext.
This class should extend [BaseManagerTestCase|http://raibledesigns.com/downloads/appfuse/api/org/appfuse/service/BaseManagerTestCase.java.html], which already exists in the ''service'' package. The parent class (BaseManagerTestCase) serves similar functionality as the BaseDaoTestCase.
At line 30 changed 1 line.
The code below is what we need for a basic JUnit test of our Managers. The code below simply creates and destroys the PersonManager. The "ctx" object is initialized in the [BaseManagerTestCase|http://raibledesigns.com/downloads/appfuse/api/org/appfuse/service/BaseManagerTestCase.java.html] class.
The code below is what you need for a basic JUnit test of your Manager. Unlike the DaoTest, this test uses [jMock|http://jmock.org] to isolate the Manager from its dependencies and make it a ''true'' "unit" test. This can be very helpful because it allows you to test your business logic w/o worrying about other dependencies. The code below simply sets up the Manger and its dependencies (as Mocks) for testing.
At line 35 added 4 lines.
import java.util.List;
import java.util.ArrayList;
import org.appfuse.dao.PersonDao;
At line 40 added 1 line.
import org.appfuse.service.impl.PersonManagerImpl;
At line 38 changed 1 line.
public class PersonManagerTest extends BaseManagerTestCase {
import org.jmock.Mock;
import org.springframework.orm.ObjectRetrievalFailureException;
At line 45 added 4 lines.
public class PersonManagerTest extends BaseManagerTestCase {
private final String personId = "1";
private PersonManager personManager = new PersonManagerImpl();
private Mock personDao = null;
At line 41 removed 1 line.
private PersonManager mgr = null;
At line 45 changed 1 line.
mgr = (PersonManager) ctx.getBean("personManager");
personDao = new Mock(PersonDao.class);
personManager.setPersonDao((PersonDao) personDao.proxy());
At line 50 changed 1 line.
mgr = null;
personManager = null;
At line 55 changed 1 line.
Now that we have the JUnit framework down for this class, let's add the meat: the test methods to make sure everything works in our Manager. Here's a snippet from the [DAO Tutorial|CreateDAO] tutorial to help you understand what we're about to do.
Now that you have the skeleton done for this class, you need to add the meat: the test methods to make sure everything works. Here's a snippet from the [DAO Tutorial|CreateDAO] tutorial to help you understand what we're about to do.
At line 64 changed 3 lines.
person = mgr.getPerson("1");
assertNotNull(person.getFirstName());
// set expected behavior on dao
personDao.expects(once()).method("getPerson")
.will(returnValue(new Person()));
person = personManager.getPerson(personId);
assertTrue(person != null);
personDao.verify();
At line 70 changed 2 lines.
person = mgr.getPerson("1");
person.setFirstName("test");
// set expected behavior on dao
personDao.expects(once()).method("savePerson")
.with(same(person)).isVoid();
At line 73 changed 3 lines.
person = mgr.savePerson(person);
assertEquals(person.getFirstName(), "test");
}
personManager.savePerson(person);
personDao.verify();
}
At line 79 removed 1 line.
person = (Person) populate(person);
At line 81 changed 3 lines.
person = mgr.savePerson(person);
assertEquals(person.getFirstName(), "Bill");
assertNotNull(person.getId());
// set required fields
person.setFirstName("firstName");
person.setLastName("lastName");
At line 85 changed 1 line.
log.debug("removing person, personId: " + person.getId());
// set expected behavior on dao
personDao.expects(once()).method("savePerson")
.with(same(person)).isVoid();
personManager.savePerson(person);
personDao.verify();
At line 87 changed 1 line.
mgr.removePerson(person.getId().toString());
// reset expectations
personDao.reset();
At line 106 added 11 lines.
personDao.expects(once()).method("removePerson").with(eq(new Long(personId)));
personManager.removePerson(personId);
personDao.verify();
// reset expectations
personDao.reset();
// remove
Exception ex = new ObjectRetrievalFailureException(Person.class, person.getId());
personDao.expects(once()).method("removePerson").isVoid();
personDao.expects(once()).method("getPerson").will(throwException(ex));
personManager.removePerson(personId);
At line 90 changed 5 lines.
person = mgr.getPerson(person.getId().toString());
fail("Person found in database");
} catch (DataAccessException dae) {
log.debug("Expected exception: " + dae.getMessage());
assertNotNull(dae);
personManager.getPerson(personId);
fail("Person with identifier '" + personId + "' found in database");
} catch (ObjectRetrievalFailureException e) {
assertNotNull(e.getMessage());
At line 123 added 1 line.
personDao.verify();
At line 105 changed 1 line.
First off, create a PersonManager.java interface in the src/service/**/service directory and specify the basic CRUD methods for any implementation classes. ''I've eliminated the JavaDocs in the class below for display purposes.''
First off, create a PersonManager.java interface in the src/service/**/service directory and specify the basic CRUD methods for any implementation classes. ''I've eliminated the JavaDocs in the class below for display purposes.'' The ''setPersonDao()'' method is not used in most cases - its just exists so the PersonManagerTest can set the DAO on the interface.
At line 142 added 1 line.
import org.appfuse.dao.PersonDao;
At line 145 added 1 line.
public void setPersonDao(PersonDao dao);
At line 117 changed 1 line.
public Person savePerson(Person person);
public void savePerson(Person person);
At line 143 changed 1 line.
public Person savePerson(Person person) {
public void savePerson(Person person) {
At line 145 removed 1 line.
return person;
At line 154 changed 2 lines.
One thing to note is the {{setPersonDao}} method. This is used by Spring to bind the PersonDao to this Manager. This is configured in the applicationContext-service.xml file. We'll get to configuring that in Step 3[3].
You should be able to compile everything now using "ant compile-service"...
One thing to note is the {{setPersonDao()}} method. This is used by Spring to bind the PersonDao to this Manager. This is configured in the applicationContext-service.xml file. We'll get to configuring that in Step 3[3]. You should be able to compile everything now using "ant compile-service".
At line 157 changed 1 line.
Finally, we need to create the PersonManagerTest.properties file in test/service/**/service so that {{person = (Person) populate(person);}} will work in our test.
Now you need to edit Spring's config file for our services layer so it will know about this new Manager.
At line 159 removed 7 lines.
;:''If you created a PersonDaoTest.properties file in the last tutorial, duplicating (and renaming) it is the easy route. Alternatively, you could set the properties manually.''
{{{firstName=Bill
lastName=Joy}}}
Now we need to edit Spring's config file for our services layer so it will know about this new Manager.
At line 168 changed 1 line.
To notify Spring of this our PersonManager interface and its implementation, open the src/service/**/service/applicationContext-service.xml file. In here, you should see a commented out definition for the "personManager" bean. Uncomment this, or add the following to the bottom of this file.
To notify Spring of this our PersonManager interface and its implementation, open the src/service/**/service/applicationContext-service.xml file. Add the following to the bottom of this file.
At line 172 changed 4 lines.
<bean id="personManager" parent="txProxyTemplate">
<property name="target">
<bean class="org.appfuse.service.impl.PersonManagerImpl" autowire="byName"/>
</property>
<bean id="personManager" class="org.appfuse.service.impl.PersonManagerImpl">
<property name="personDao" ref="personDao"/>
At line 179 changed 1 line.
The "parent" attribute refers to a bean definition for a [TransactionProxyFactoryBean|http://www.springframework.org/docs/api/org/springframework/transaction/interceptor/TransactionProxyFactoryBean.html] that has all the basic transaction attributes set.
This bean must have a name that ends in "Manager". This is because there is AOP advice applied at the top of this file for all *Manager beans.
{{{<aop:advisor id="managerTx" advice-ref="txAdvice" pointcut="execution(* *..service.*Manager.*(..))" order="2"/>}}} For more information on transactions with Spring, see [Spring's documentation|http://www.springframework.org/docs/reference/transaction.html].
At line 181 removed 1 line.
At line 184 changed 1 line.
Save all your edited files and try running "ant test-service -Dtestcase=PersonManager".
Save all your edited files and try running __ant test-service -Dtestcase=PersonManager__.
At line 186 changed 1 line.
__Yeah Baby, Yeah:__
''Yeah Baby, Yeah:''
At line 211 added 2 lines.
The files that were modified and added to this point are [available for download|https://appfuse.dev.java.net/files/documents/1397/7484/appfuse-tutorial-managers-1.6.zip].

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