4-How to Develop Message-Driven Beans

XML files locates in the src/META-INF directory;
FILE: ejb-jar.xml

<!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>
<enterprise-beans>
<entity>
<ejb-name>OrderARSEJB</ejb-name>
<home>mdbex.OrderARSHome</home>
<remote>mdbex.OrderARS</remote>
<ejb-class>mdbex.OrderARSEJB</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.String</prim-key-class>
<reentrant>False</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>OrderARS</abstract-schema-name>
<cmp-field>
<field-name>orderId</field-name>
</cmp-field>
<cmp-field>
<field-name>studentId</field-name>
</cmp-field>
<cmp-field>
<field-name>orderDate</field-name>
</cmp-field>
<cmp-field>
<field-name>status</field-name>
</cmp-field>
<cmp-field>
<field-name>amount</field-name>
</cmp-field>
<primkey-field>orderId</primkey-field>
<query>
<query-method>
<method-name>findByStatus</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method-params>
</query-method>
<ejb-ql>
<![CDATA[SELECT OBJECT(o) FROM OrderARS AS o
WHERE o.status = ?1]]>
</ejb-ql>
</query>
<query>
<query-method>
<method-name>ejbSelectAllOrderAmounts</method-name>
<method-params>
</method-params>
</query-method>
<ejb-ql>
<![CDATA[SELECT o.amount FROM OrderARS AS o
WHERE o.orderId IS NOT NULL]]>
</ejb-ql>
</query>
</entity>
<message-driven>
<ejb-name>OrderVerifierMDB</ejb-name>
<ejb-class>mdbex.OrderVerifierMDB</ejb-class>
<transaction-type>Container</transaction-type>
<message-driven-destination>
<destination-type>javax.jms.Topic</destination-type>
<subscription-durability>NonDurable</subscription-durability>
</message-driven-destination>
</message-driven>
</enterprise-beans>
</ejb-jar>

FILE: weblogic-ejb-jar.xml
<?xml version="1.0"?>
<!DOCTYPE weblogic-ejb-jar PUBLIC
'-//BEA Systems, Inc.//DTD WebLogic 7.0.0 EJB//EN'
'http://www.bea.com/servers/wls700/dtd/weblogic-ejb-jar.dtd'>
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>OrderARSEJB</ejb-name>
<entity-descriptor>

<persistence>
<persistence-use>
<type-identifier>WebLogic_CMP_RDBMS</type-identifier>
<type-version>6.0</type-version>
<type-storage>META-INF/weblogic-cmp-rdbms-jar.xml</type-storage>
</persistence-use>
</persistence>

</entity-descriptor>
<jndi-name>mdbex/OrderARS</jndi-name>
</weblogic-enterprise-bean>
<weblogic-enterprise-bean>
<ejb-name>OrderVerifierMDB</ejb-name>
<message-driven-descriptor>
<pool>
<max-beans-in-free-pool>20</max-beans-in-free-pool>
<initial-beans-in-free-pool>5</initial-beans-in-free-pool>
</pool>
<destination-jndi-name>OrderVerifierTopic</destination-jndi-name>
</message-driven-descriptor>
<jndi-name>mdbex/OrderVerifier</jndi-name>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>

FILE: weblogic-rdbms-jar.xml
<!DOCTYPE weblogic-rdbms-jar PUBLIC
'-//BEA Systems, Inc.//DTD WebLogic 7.0.0 EJB RDBMS Persistence//EN'
'http://www.bea.com/servers/wls700/dtd/weblogic-rdbms20-persistence-700.dtd'>
<weblogic-rdbms-jar>
<weblogic-rdbms-bean>
<ejb-name>OrderARSEJB</ejb-name>
<data-source-name>styejbDB</data-source-name>
<table-map>
<table-name>orders</table-name>
<field-map>
<cmp-field>orderId</cmp-field>
<dbms-column>order_id</dbms-column>
</field-map>
<field-map>
<cmp-field>studentId</cmp-field>
<dbms-column>student_id</dbms-column>
</field-map>
<field-map>
<cmp-field>orderDate</cmp-field>
<dbms-column>order_date</dbms-column>
</field-map>
<field-map>
<cmp-field>status</cmp-field>
<dbms-column>status</dbms-column>
</field-map>
<field-map>
<cmp-field>amount</cmp-field>
<dbms-column>amount</dbms-column>
</field-map>
</table-map>
</weblogic-rdbms-bean>
</weblogic-rdbms-jar>