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Difference between revisions of "EclipseLink/Examples/JPA/GlassFishV2 Web Tutorial"

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*Steps: Select the EAR and [Run on Server].
 
*Steps: Select the EAR and [Run on Server].
 
*The first "Run on Server" may not start the server, in this case you "Start Server" and then "Run on Server".
 
*The first "Run on Server" may not start the server, in this case you "Start Server" and then "Run on Server".
 +
 +
==Publish EAR==
 +
 +
==Perform CRUD operations: JPQL insert and query==
 +
 +
===Browser Output===
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[[Image:Glassfish_ear_application_screen.JPG]]
  
  
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==References==
 
==References==
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*See [[EclipseLink/UserGuide/Developing_JPA_Projects_%28ELUG%29|Developing JPA Projects]] in the EclipseLink User's Guide.
  
 
Originated on build 20080915 - Michael O'Brien
 
Originated on build 20080915 - Michael O'Brien

Revision as of 11:13, 16 September 2008

EclipseLink JPA Deployed on GlassFish 2.1 using Eclipse WTP

Note: This tutorial' is under construction for the next week as of 20080915.


If you want to get a small web application running quickly on GlassFish - the services provided by the Web Tools Project pluggin in the Eclipse IDE can take care of the deployment details and set the server into debug mode for you.

This basic example details how to use Eclipse to run/debug a minimum J2EE web application servlet using EclipseLink JPA as the persistence provider. The goal of this example is to detail the minimum steps needed to run EclipseLink inside SUN GlassFish using the Eclipse IDE - at this point no presentation/controller layer such as JSF, Spring or Struts will be used beyond a basic HttpServlet so we can concentrate on the the integration layer JPA setup.

The DALI project was used to generate Entities from a schema with sequences already populated.

The details described here are valid for both GlassFish V2 and the SUN Java System Application Server 9

Development Environment

Software: Eclipse IDE for Java EE 3.4 Ganymede (June 2008 +) with all 5 packages (DTP 1.6, EMF 2.4, GEF 3.4, WTP 3.0, XSD 2.4), Derby Database 10.4, Java JDK 1.6.0_04, GlassFish V2.1 build 50

This example will run fine with any Database that EclipseLink supports.

Prerequisites

Install Eclipse EE

  • I installed a clean version of Eclipse Ganymede (June 2008) with all of WTP 3.0

Install a Database

  • In this example I am using Derby 10.4, the table schemas have already been created manually and all entity java classes may be generated using the Eclipse DALI tool.
  • GlassFish comes preconfigured with a JNDI datasource connection to Derby.

Install GlassFish

I installed the latest GlassFish V2.1 build and followed the instructions on that page.

  • C:\opt>java -Xmx256m -jar glassfish-installer-v2.1-b50-_20080915_windows.jar
  • C:\opt\glassfish>cd glassfish
  • C:\opt\glassfish>ant -f setup.xml

Install GlassFish Eclipse 3.4 Server Plugin

The GlassFish server plugin is not shipped by default with Eclipse - you will need to update your Eclipse IDE to pick up the plugin.

  • Goto the Servers tab in a Java EE view and right-click New | Server
  • Select the link "Download additional Server adapters"
  • Select the GlassFish Java EE 5 Server from java.net - make sure it is version 1.0.9+

Glassfish download additional servers.JPG

Validating the GlassFish/Eclipse configuration

  • Use the V2 plugin when creating a server
  • Start the server to test the plugin
Sun Java System Application Server 9.1.1 (build b50-fcs)
  • Create an empty EAR application using the Eclipse JEE application wizard
    • Create an EJB and Web subproject - do not add any facets for other servers - as GlassFish does not appear in the "Target Runtime" dropodown yet
      • Switch the EAR version to 5.0 from 1.4
    • Add a test.jsp page to the Web project
  • Select the EAR project, right-click and "Run on Server"

Run 15ear on glassfish2 server.JPG


GlassFish Configuration Changes

The following configuration changes will need to be done within the GlassFish [http:/127.0.0.1"4848 admin] console.

JNDI Datasource Setup

Global Scoped Datasource Setup

After logging into the admin console navigate to the following 2 sections to setup the JDBC connection pool and DataSource.

Setup GlassFish JDBC Connection Pool

  • 1 - create your own connection pool and datasource

Resource | JDBC | Connection Pools | New Connection Pool Resource | JDBC | Connection Pools | New JDBC DataSource

  • 2 - or use the preconfigured datasource "jdbc/__default" that comes with GlassFish
    • You may want to remove the property ;create=true to manage your own database state.

Glassfish admin jdbc derby details.JPG

  • You should see the following logs on predeploy
[EL Config]: 2008.09.15 15:20:52.611--ServerSession(20983130)--Connection(4519815)--Thread(Thread[main,5,main])--connecting(DatabaseLogin(
	platform=>DerbyPlatform
	user name=> "APP"
	datasource URL=> "jdbc:derby:C:/opt/derby104/sun-appserv-samples;create=true"
))
[EL Config]: 2008.09.15 15:20:54.200--ServerSession(20983130)--Connection(22611277)--Thread(Thread[main,5,main])--Connected: jdbc:derby:C:/opt/derby104/sun-appserv-samples
	User: APP
	Database: Apache Derby  Version: 10.3.2.1 - (599110)
	Driver: Apache Derby Embedded JDBC Driver  Version: 10.3.2.1 - (599110)

Persistence JAR location

  • You will not need to add a jar for the Persistence API 1.0 - GlassFish already includes it.
  • However, your project will need a reference to $EclipseLink\plugins\javax.persistence_1.0.0.jar

EclipseLink JAR location

  • The eclipselink.jar should be placed off of the container lib directory $GLASSFISH_HOME/lib
  • It is not recommended that the EAR include its own version of eclipselink.jar.
  • Your eclipse project should reference but not include this jar.

JDBC JAR location

Jars for Derby 10, Oracle 11, MySQL 5 and Sybase 5.5/6.0 are off the container lib directory $GLASSFISH_HOME/lib


Create J2EE application

Create your own J2EE Enterprise Application as below. File | new | project | J2EE | Enterprise Application Project Select server, use 5.0 Ear version

Create a new Web and an optional EJB project

Select generate deployment descriptor if you want to change the context-root

  • Path changes
	<classpathentry combineaccessrules="false" kind="src" path="/org.eclipse.persistence.core"/>
	<classpathentry combineaccessrules="false" kind="src" path="/org.eclipse.persistence.jpa"/>
or
	<classpathentry combineaccessrules="false" kind="src" path="/eclipselink.jar"/>
  • After EAR project creation - reference the org.eclipse.peristence.core and jpa projects or include a reference to eclipselink.jar in your WAR project.
  • If you don't reference the eclipselink.* projects then include a classpath reference to persistence.jar and an Oracle (or other Database) JDBC driver jar for your DB - You will need to put this JDBC driver jar in your WebLogic /domains/wl_server/lib directory as well.


Persistence.xml

  • JTA : Put persistence.xml beside your JPA entities in yourProjectEJB/ejbModule/META-INF
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
  <persistence-unit name="unified" transaction-type="JTA">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <jta-data-source>jdbc/__default</jta-data-source>
    <properties>
      <property name="eclipselink.target-server" value="SunAS9"/>
      <property name="eclipselink.logging.level" value="FINEST"/>
      <property name="eclipselink.session-name" value="eclipselinkwls"/>
    </properties>
  </persistence-unit>
</persistence>
  • RESOURCE_LOCAL : non-JTA : Put persistence.xml beside your JPA entities in yourProjectEJB/ejbModule/META-INF
  • This one is used by a local SE Java app to create and pre-populated the derby database
  <persistence-unit name="stat.create.tables" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <class>entity..</class>
    <properties>
      <property name="eclipselink.jdbc.platform" value="oracle.toplink.platform.database.DerbyPlatform"/>
      <property name="eclipselink.jdbc.driver" value="org.apache.derby.jdbc.EmbeddedDriver"/>
      <property name="eclipselink.target-database" value="Derby"/>            
      <property name="eclipselink.jdbc.url" value="jdbc:derby:C:/opt/derby104/sun-appserv-samples;create=true"/>
      <property name="eclipselink.jdbc.user" value="APP"/>
      <property name="eclipselink.jdbc.password" value="APP"/>
      <property name="eclipselink.logging.level" value="FINEST"/>            
      <property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>
      <property name="eclipselink.ddl-generation.output-mode" value="database"/>
    </properties>
  </persistence-unit>

Start Server

  • Steps: Select the EAR and [Run on Server].
  • The first "Run on Server" may not start the server, in this case you "Start Server" and then "Run on Server".

Publish EAR

Perform CRUD operations: JPQL insert and query

Browser Output

Glassfish ear application screen.JPG



All of persistence.xml configuration, jpql query example - in progress ......


References

Originated on build 20080915 - Michael O'Brien

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