THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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The Phone Book Bean Example
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And, as usual their is an empty constructor for the Entity Bean
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MyPhonebookLocal.java is the business interface that drives the above mentioned Entity Bean.
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MyPhonebookBean.java is where the implementation of the local (and if there is, a the remote) interface. To explain what the annotations in this Stateless Session Bean means I will enumerate them:
- @Stateless - tells Geronimo that this is a stateless session bean
- @PersistenceUnit - tells Geronimo to retrieve a persistence unit defined in the persistence.xml and place it in the EntityManagerFactory note
Note that PersistenceContext is used when you are directly obtaining a EntityManager. For an EntityManagerFactory use PersistenceUnit.
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index.jsp is the JSP page that uses the EJB to access the database.
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Deployment Plans for EJB
openejb-jar.xml just specifies the module's information.
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persistence.xml will specify the name of the PersistenceUnit. This name is used when referencing for the EntityManagerFactory. I have denoted it as PhonePU. For some reason I could not get it to reference with jta-data-source. So the alternative method is to explicitly specify the ConnectionURL, ConnectionDriverName, and ConnectionUserName. I added an extra property called SynchronizeMappings so that the data in the database will not be overwritten.
SEE BELOW FOR POSSIBLE SOLUTION
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Deployment Plans for Web-App
web.xml references the EJB by specifying the package to which the MyPhonebookLocal belongs to.
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geronimo-web.xml specifies the module's information and the context-root for the web-app.
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Deployment Plan for the application
geronimo-application.xml tells the application that there is a database pool that needs to be deployed as well. The db pool is defined in PhoneBookPool.xml and the driver that is needs in order to be deployed is the tranql-connector-ra-1.3.rar file--these two files will reside on the top level layer of the resultant EAR file.
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Configuring, Building, and Deploying the Application
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After starting Apache Geronimo log into the console and follow the given steps to create the PhoneBookDB.
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- Select DB Manager link from the Console Navigation in the left.
- Give the database name as PhoneBookDB and click Create button.
- Select PhoneBookDB to the Use DB field.
- Open PhoneBookDB.sql in the myphonebook/myphonebook-ear/src/main/resources directory from a text editor.
- Paste the content PhoneBookDB.sql to the SQL Commands text area and press Run SQL button.
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1. Include the module name in the app dependencies so geronimo knows to look in the new datasource module for the datasource. So, the openejb-jar.xml should look something like:
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2. specify the name of the datasource in persistence.xml, something like
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