Post Subject : Tutorial on J2EE using JBOSS-4.x, Eclipse-3.x, Lomboz-3.x and
PostgreSQL-8.x on Windows XP
Ref. 1 : Tutorial for building J2EE Applications using JBOSS and ECLIPSE
(Chapter 5 : BMP Entity Bean)
http://www.tusc.com.au/tutorial/html/chap5.html
Ref. 2 : Tutorial on J2EE using JBOSS, ECLIPSE and Lomboz (Forum on Ref. 1)
http//www.jboss.org/index.html?module=bb&op=viewtopic&t=36910
Ref. 3 : Environment in use ;
- Windows XP SP2
- J2SDK 1.4.2_08
- Eclipse 3.0.2
- JBoss 4.0.2
- Lomboz 3.0.1 + emf-sdo-runtime-2.0.0
- PostgreSQL 8.0.3 (= DefaultDS)
Followings are some notes on Chapter 5 (BMP Entity Bean) in Ref. 1
* Chapter 4 (Statefull Session Bean) has been jumped over.
* Task numbers are based on Ref. 1.
* No change has been made to the server configuration file
(jboss402postgres.server) thus far.
Task 1 : Create the Customer BMP Entity Bean
- Before start the task, make a copy of "xdoclet.xml" under MyStoreMgr/META-INF
as a backup.
- On creation of "CustomerBean", check some points before proceeding further
steps.
a. make sure the XDoclet part;/**
| * @ejb.bean name="Customer"* jndi-name="CustomerBean"* type="BMP"
| **/
b. comment out "ejbCreate()" and "ejbPostCreate()" methods
public abstract class CustomerBean implements javax.ejb.EntityBean {
|
| // /**
| // *
| // * <!-- begin-user-doc -->
| // * The ejbCreate method.
| // * <!-- end-user-doc -->
| // *
| // * <!-- begin-xdoclet-definition -->
| // * @ejb.create-method
| // * <!-- end-xdoclet-definition -->
| // * @generated
| // */
| // public java.lang.String ejbCreate() throws javax.ejb.CreateException {
| // // EJB 2.0 spec says return null for CMP ejbCreate methods.
| // // TODO: YOU MUST INITIALIZE THE FIELDS FOR THE BEAN HERE.
| // // setMyField("Something");
| // // begin-user-code
| // return null;
| // // end-user-code
| // }
| //
| // /**
| // * <!-- begin-user-doc -->
| // * The container invokes this method immediately after it calls
ejbCreate.
| // * <!-- end-user-doc -->
| // *
| // * @generated
| // */
| // public void ejbPostCreate() throws javax.ejb.CreateException {
| // // begin-user-code
| // // end-user-code
| // }
|
| }
c. confirm no parts of "xdoclet.xml" are missed.
= the lower half of xdoclet.xml might disappear on the first creation.
= recover it from the backup file if any.
d. check xdoclet.xml for <!-- BEANS START --> section.
If no "fileset" for CustomerBean.java, make it as follows;
:
| <!-- BEANS START -->
| <fileset dir="${project.dir}/src/" defaultexcludes="yes">
| <include name="au/com/tusc/session/StoreAccessBean.java" />
| </fileset> <fileset dir="${project.dir}/src/"
defaultexcludes="yes">
| <include name="au/com/tusc/bmp/CustomerBean.java" />
| </fileset> <!-- BEANS END -->
| :
Task 2 : Create Customer's DAO Interface
: (as per the steps in Ref. 1)
Task 9 : Add a create method to the StoreAccess Bean
Task 10 : Add a Business Method in StoreAccess Bean
- After "Generate EJB Classes" (before "deploy");
= change <ejb-ref> tag under "session" in jboss.xml to <ejb-local-ref> as
shown in Ref. 1.
= add "ejb/" to CustomerLocal in <ejb-ref-name> tag under "session" in
ejb-jar.xml as follows;
:
| <ejb-local-ref >
<ejb-ref-name>ejb/CustomerLocal</ejb-ref-name>
<ejb-ref-type>Entity</ejb-ref-type>
| <local-home>au.com.tusc.bmp.CustomerLocalHome</local-home>
| <local>au.com.tusc.bmp.CustomerLocal</local>
| <ejb-link>Customer</ejb-link>
| </ejb-local-ref>
| :
- Start JBoss from "Lomboz J2EE View" tag in Eclipse.
Note : Use "Run Server" instead of "Debug Server"
= In case of error with "Debug Server",
: click "Stop the launched server" button
: exit Eclipse
: delete MyStorePgSQL.jar file under /sever/postgres/deploy
: start Eclipse again, and then JBoss with "Run Server"
=== On completion of CustomerBean.java, XDoclet sections of each file are as
follows;
- StoreAccessBean.java
Note : The lomboz sections are generated automatically.
/**
| *
| * <!-- begin-user-doc --> A generated session bean <!-- end-user-doc --> *
| <!-- lomboz.beginDefinition -->
| <?xml version="1.0" encoding="UTF-8"?>
| <lomboz:EJB xmlns:j2ee="http://java.sun.com/xml/ns/j2ee";
xmlns:lomboz="http://lomboz.objectlearn.com/xml/lomboz";>
| <lomboz:session>
| <lomboz:sessionEjb>
| <j2ee:display-name>StoreAccess</j2ee:display-name>
| <j2ee:ejb-name>StoreAccess</j2ee:ejb-name>
| <j2ee:ejb-class>au.com.tusc.session.StoreAccessBean</j2ee:ejb-class>
| <j2ee:session-type>Stateless</j2ee:session-type>
| <j2ee:transaction-type>Container</j2ee:transaction-type>
| </lomboz:sessionEjb>
| </lomboz:session>
| </lomboz:EJB>
| <!-- lomboz.endDefinition -->
| *
| * <!-- begin-xdoclet-definition -->
| * @ejb.bean name="StoreAccess"
| * jndi-name="StoreAccessBean"
| * type="Stateless"
| * transaction-type="Container"
| *
| * @ejb.dao class="au.com.tusc.session.StoreAccessDAO"
| * impl-class="au.com.tusc.dao.StoreAccessDAOImpl"
| *
| * @ejb.resource-ref res-ref-name="jdbc/DefaultDS"
| * res-type="javax.sql.Datasource"
| * res-auth="container"
| *
| * @jboss.resource-ref res-ref-name="jdbc/DefaultDS"
| * jndi-name="java:/DefaultDS"
| *
| * @ejb.ejb-ref ejb-name="Customer"
| * view-type="local"
| * ref-name="CustomerLocal"
| *
| * @jboss.ejb-ref-jndi ref-name="CustomerLocal"
| * jndi-name="CustomerLocal"
| *
| * @ejb.util generate="physical"
| *
| * <!-- end-xdoclet-definition -->
| * @generated
| *
| */
- CustomerBean.java
Note : The lomboz sections are generated automatically.
/**
| *
| * <!-- begin-user-doc --> You can insert your documentation for
'<em><b>CustomerBean</b></em>'. <!-- end-user-doc --> *
| <!-- begin-lomboz-definition -->
| <?xml version="1.0" encoding="UTF-8"?>
| <lomboz:EJB xmlns:j2ee="http://java.sun.com/xml/ns/j2ee";
xmlns:lomboz="http://lomboz.objectlearn.com/xml/lomboz";>
| <lomboz:entity>
| <lomboz:entityEjb>
| <j2ee:display-name>Customer</j2ee:display-name>
| <j2ee:ejb-name>Customer</j2ee:ejb-name>
| <j2ee:ejb-class>au.com.tusc.bmp.CustomerBean</j2ee:ejb-class>
| <j2ee:persistence-type>Bean</j2ee:persistence-type>
| <j2ee:cmp-version>2.x</j2ee:cmp-version>
| <j2ee:abstract-schema-name>mySchema</j2ee:abstract-schema-name>
| </lomboz:entityEjb>
| <lomboz:tableName></lomboz:tableName>
| <lomboz:dataSourceName></lomboz:dataSourceName>
| </lomboz:entity>
| </lomboz:EJB>
| <!-- end-lomboz-definition -->
| *
| * <!-- begin-xdoclet-definition -->
| *
| *
|
|
| /**
| * @ejb.bean name="Customer"
| * jndi-name="CustomerBean"
| * type="BMP"
| *
| * @ejb.dao class="au.com.tusc.bmp.CustomerDAO"
| * impl-class="au.com.tusc.dao.CustomerDAOImpl"
| *
| * @ejb.resource-ref res-ref-name="jdbc/DefaultDS"
| * res-type="javax.sql.DataSource"
| * res-auth="Container"
| *
| * @jboss.resource-ref res-ref-name="jdbc/DefaultDS"
| * jndi-name="java:/DefaultDS"
| *
| * @ejb.util generate="physical"
| *
| * <!-- end-xdoclet-defintion -->
| * @generated
| **/
- Also, ejb-jar.xml is;
<?xml version="1.0" encoding="UTF-8"?>
| <!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise
JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd";>
|
| <ejb-jar >
|
| <description><![CDATA[No Description.]]></description>
| <display-name>Generated by XDoclet</display-name>
|
| <enterprise-beans>
|
| <!-- Session Beans -->
| <session >
| <description><![CDATA[<!-- begin-user-doc --> A generated session
bean <!-- end-user-doc --> * <!-- lomboz.beginDefinition --> <?xml
version="1.0" encoding="UTF-8"?> <lomboz:EJB
xmlns:j2ee="http://java.sun.com/xml/ns/j2ee";
xmlns:lomboz="http://lomboz.objectlearn.com/xml/lomboz";> <lomboz:session>
<lomboz:sessionEjb> <j2ee:display-name>StoreAccess</j2ee:display-name>
<j2ee:ejb-name>StoreAccess</j2ee:ejb-name>
<j2ee:ejb-class>au.com.tusc.session.StoreAccessBean</j2ee:ejb-class>
<j2ee:session-type>Stateless</j2ee:session-type>
<j2ee:transaction-type>Container</j2ee:transaction-type> </lomboz:sessionEjb>
</lomboz:session> </lomboz:EJB> <!-- lomboz.endDefinition --> <!--
begin-xdoclet-definition -->]]></description>
|
| <ejb-name>StoreAccess</ejb-name>
|
| <home>au.com.tusc.session.StoreAccessHome</home>
| <remote>au.com.tusc.session.StoreAccess</remote>
| <local-home>au.com.tusc.session.StoreAccessLocalHome</local-home>
| <local>au.com.tusc.session.StoreAccessLocal</local>
| <ejb-class>au.com.tusc.session.StoreAccessSession</ejb-class>
| <session-type>Stateless</session-type>
| <transaction-type>Container</transaction-type>
|
| <ejb-local-ref >
| <ejb-ref-name>ejb/CustomerLocal</ejb-ref-name>
| <ejb-ref-type>Entity</ejb-ref-type>
| <local-home>au.com.tusc.bmp.CustomerLocalHome</local-home>
| <local>au.com.tusc.bmp.CustomerLocal</local>
| <ejb-link>Customer</ejb-link>
| </ejb-local-ref>
|
| <resource-ref >
| <res-ref-name>jdbc/DefaultDS</res-ref-name>
| <res-type>javax.sql.Datasource</res-type>
| <res-auth>container</res-auth>
| </resource-ref>
|
| </session>
|
| <!--
| To add session beans that you have deployment descriptor info for,
add
| a file to your XDoclet merge directory called session-beans.xml that
contains
| the <session></session> markup for those beans.
| -->
|
| <!-- Entity Beans -->
| <entity >
| <description><![CDATA[<!-- begin-user-doc --> You can insert your
documentation for '<em><b>CustomerBean</b></em>'.]]></description>
|
| <ejb-name>Customer</ejb-name>
|
| <home>au.com.tusc.bmp.CustomerHome</home>
| <remote>au.com.tusc.bmp.Customer</remote>
| <local-home>au.com.tusc.bmp.CustomerLocalHome</local-home>
| <local>au.com.tusc.bmp.CustomerLocal</local>
|
| <ejb-class>au.com.tusc.bmp.CustomerBMP</ejb-class>
| <persistence-type>Bean</persistence-type>
| <prim-key-class>au.com.tusc.bmp.CustomerPK</prim-key-class>
| <reentrant>False</reentrant>
|
| <resource-ref >
| <res-ref-name>jdbc/DefaultDS</res-ref-name>
| <res-type>javax.sql.DataSource</res-type>
| <res-auth>Container</res-auth>
| </resource-ref>
|
| </entity>
|
| <!--
| To add entity beans that you have deployment descriptor info for, add
| a file to your XDoclet merge directory called entity-beans.xml that
contains
| the <entity></entity> markup for those beans.
| -->
|
| <!-- Message Driven Beans -->
| <!--
| To add message driven beans that you have deployment descriptor info
for, add
| a file to your XDoclet merge directory called
message-driven-beans.xml that contains
| the <message-driven></message-driven> markup for those beans.
| -->
|
| </enterprise-beans>
|
| <!-- Relationships -->
|
| <!-- Assembly Descriptor -->
| <assembly-descriptor >
| <!--
| To add additional assembly descriptor info here, add a file to your
| XDoclet merge directory called assembly-descriptor.xml that contains
| the <assembly-descriptor></assembly-descriptor> markup.
| -->
|
| <!-- finder permissions -->
|
| <!-- finder permissions -->
|
| <!-- transactions -->
|
| <!-- finder transactions -->
| </assembly-descriptor>
|
| </ejb-jar>
- and jboss.xml is;
<?xml version="1.0" encoding="UTF-8"?>
| <!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 3.2//EN"
"http://www.jboss.org/j2ee/dtd/jboss_3_2.dtd";>
|
| <jboss>
|
| <unauthenticated-principal>nobody</unauthenticated-principal>
|
| <enterprise-beans>
|
| <!--
| To add beans that you have deployment descriptor info for, add
| a file to your XDoclet merge directory called jboss-beans.xml that
contains
| the <session></session>, <entity></entity> and
<message-driven></message-driven>
| markup for those beans.
| -->
|
| <entity>
| <ejb-name>Customer</ejb-name>
| <jndi-name>CustomerBean</jndi-name>
| <local-jndi-name>CustomerLocal</local-jndi-name>
| <resource-ref>
| <res-ref-name>jdbc/DefaultDS</res-ref-name>
| <jndi-name>java:/DefaultDS</jndi-name>
| </resource-ref>
|
| <method-attributes>
| </method-attributes>
|
| </entity>
|
| <session>
| <ejb-name>StoreAccess</ejb-name>
| <jndi-name>StoreAccessBean</jndi-name>
| <local-jndi-name>StoreAccessLocal</local-jndi-name>
| <ejb-local-ref>
| <ejb-ref-name>ejb/CustomerLocal</ejb-ref-name>
| <jndi-name>CustomerLocal</jndi-name>
| </ejb-local-ref>
| <resource-ref>
| <res-ref-name>jdbc/DefaultDS</res-ref-name>
| <jndi-name>java:/DefaultDS</jndi-name>
| </resource-ref>
|
| <method-attributes>
| </method-attributes>
| </session>
|
| </enterprise-beans>
|
| <resource-managers>
| </resource-managers>
|
| </jboss>
jbosszone
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