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The following is the deployment descriptor of the Java EE application client module that looks up an ejb and calls a method on it. The ejb converts the Indian Rupess (Rs.) into American Dollars ($). The client sends a double value which is Indian Rupees to ejb. The ejb returns equivalent American Dollars as double value.
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<?xml version="1.0" encoding="UTF-8"?>
<application-client xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/application-client_5.xsd"
version="5">
<ejb-ref>
<ejb-ref-name>ejb/Converter</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<remote>examples.appclient.Converter</remote>
</ejb-ref>
</application-client>
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Following is the corresponding deployment plan of the Java EE client module.
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<?xml version="1.0" encoding="UTF-8"?>
<application-client xmlns="http://geronimo.apache.org/xml/ns/j2ee/application-client-2.0"
xmlns:sys="http://geronimo.apache.org/xml/ns/deployment-1.2"
xmlns:naming="http://geronimo.apache.org/xml/ns/naming-1.2"
xmlns:security="http://geronimo.apache.org/xml/ns/security-2.0"
xmlns:connector="http://geronimo.apache.org/xml/ns/j2ee/connector-1.2">
<sys:client-environment>
<sys:moduleId>
<sys:groupId>Converter</sys:groupId>
<sys:artifactId>Converter-app-client</sys:artifactId>
<sys:version>3.0</sys:version>
<sys:type>jar</sys:type>
</sys:moduleId>
</sys:client-environment>
<sys:server-environment>
<sys:moduleId>
<sys:groupId>Converter</sys:groupId>
<sys:artifactId>Converter-app-client-server</sys:artifactId>
<sys:version>3.0</sys:version>
<sys:type>jar</sys:type>
</sys:moduleId>
</sys:server-environment>
<ejb-ref>
<ref-name>ejb/Converter</ref-name>
<naming:pattern>
<naming:groupId>Converter</naming:groupId>
<naming:artifactId>ConverterEAR</naming:artifactId>
<naming:version>5.0</naming:version>
<naming:module>ConverterEJB.jar</naming:module>
<naming:name>ConverterBean</naming:name>
</naming:pattern>
</ejb-ref>
</application-client>
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The below is the client code that looks up the ejb and calls the method on it.
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package examples.appclient.client;
import javax.naming.Context;
import javax.naming.InitialContext;
import examples.appclient.Converter;
public class ConverterClient {
//The remote interface of the ConverterBean packaged with the
//Java EE client jar
private static Converter converter;
private static double amount = 50;
public static void main(String[] args) {
amount = Double.parseDouble(args[0]);
doConversion();
}
public static void doConversion() {
try {
Context context = new InitialContext();
converter = (Converter)
context.lookup("java:comp/env/ejb/Converter");
double dollars = converter.getDollars(amount);
System.out.println("Rs " + amount + " is " + dollars + " Dollars.");
System.exit(0);
} catch (Exception ex) {
System.err.println("Caught an unexpected exception!");
ex.printStackTrace();
}
}
}
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The META-INF/MANIFEST.MF file should contain the following entry for the client to run.
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Manifest-Version: 1.0 Main-Class: examples.appclient.client.ConverterClient |
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