THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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An entity bean is defined as a representation of persistent data that has the ability to read from database and populate its fields with data. It can be updated and stored back to the database. There are two types: Bean-Managed Persistence(BMP) and Container-Managed Persistent(CMP). This article covers the migration of a BMP sample application. For this type of entity bean, actual code must be written to handle persistent operations such as loading, saving and finding data. The developer must use persistence API such as JDBC to select, insert, update, delete from a database.
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CREATE TABLE CUSTOMER(ID INTEGER NOT NULL PRIMARY KEY,NAME VARCHAR(45),BIRTHDATE DATE,SSS_NO VARCHAR(25),ADDRESS VARCHAR(60),ANNUAL_SALARY DOUBLE,LOAN_AMOUNT DOUBLE)
Configure Maven
You should set the maven.geronimo.home property in project.properties to point to your <geronimo_home> directory.
Step-by-step migration
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<?xml version="1.0" encoding="UTF-8"?>
<openejb-jar
xmlns="http://www.openejb.org/xml/ns/openejb-jar"
xmlns:naming="http://geronimo.apache.org/xml/ns/naming"
xmlns:security="http://geronimo.apache.org/xml/ns/security"
xmlns:sys="http://geronimo.apache.org/xml/ns/deployment"
configId="geronimo/CustomerEJB/1.0/car"
parentId="orggeronimo/apache/geronimo/SystemDatabasesystem-database/1.0/car">
<enterprise-beans>
<entity>
<ejb-name>CustomerEJB</ejb-name>
<jndi-name>CustomerHomeRemote</jndi-name>
<local-jndi-name>CustomerRemote</local-jndi-name>
<resource-ref>
<ref-name>jdbc/ibm-demo</ref-name>
<resource-link>SystemDatasource</resource-link>
</resource-ref>
</entity>
</enterprise-beans>
</openejb-jar> |
This plan sets orggeronimo/apache/geronimo/SystemDatabasesystem-database/1.0/car as the parent. What follows is the definition of the entity bean. The jndi-name element indicates the jndi name of the entity bean's home interface CustomerHomeRemote. This is the name that the Loan BMP sample application will lookup in the jndi context. The element local-jndi-name indicates the jndi name of the local interface, which in this case happens to be a remote interface, CustomerRemote. Next, a reference to the SystemDatasource is defined giving the application access to the database.
The Web Application client can be direclty directly deployed in Geronimo. This is because the build step packages both the JBoss jboss-web.xml and Geronimo geronimo-web.xml specific deployment plans in the war file. You can see both of these files in the <bmp_home>\src\webapp\WEB-INF directory.
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<web-app xmlns="http://geronimo.apache.org/xml/ns/web"
xmlns:naming="http://geronimo.apache.org/xml/ns/naming"
configId="geronimo/EntityDemoWebApp/1.0/car"
parentId="geronimo/CustomerEJB/1.0/car">
<context-root>entity-ejb</context-root>
<ejb-ref>
<ref-name>ejb/CustomerHome</ref-name>
<target-name>
geronimo.server:EJBModule=MDBDemo,geronimo/CustomerEJB/1.0/car,
J2EEApplication=null,J2EEServer=geronimo,
j2eeType=EntityBean,name=CustomerEJB
</target-name>
</ejb-ref>
</web-app> |
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