EJB embedded container sample #lab

CalculatorBean.java

package io.github.benas.labs.javaee.ejb;

import javax.ejb.Stateless;

@Stateless
public class CalculatorBean {

    public int add(int a, int b) {
        return a + b;
    }

    public int subtract(int a, int b) {
        return a - b;
    }

    public int multiply(int a, int b) {
        return a * b;
    }

    public int divide(int a, int b) {
        return a / b;
    }

    public int remainder(int a, int b) {
        return a % b;
    }
}

CalculatorTest.java

package io.github.benas.labs.javaee.ejb;

import javax.ejb.embeddable.EJBContainer;
import javax.naming.NamingException;

public class CalculatorTest {

    private static CalculatorBean calculator;

    public static void main(String[] args) throws NamingException {

        //Bootstrap the Embedded EJB Container, MBH : META-INF/ejb-jar.xml is mandatory for bootstrapping (even empty like in this case)
        EJBContainer ejbContainer = EJBContainer.createEJBContainer();

        Object object = ejbContainer.getContext().lookup("java:global/ejb/CalculatorBean");

        calculator = (CalculatorBean) object;

        System.out.println("calculator : 2 + 3 = " + calculator.add(2, 3));

        ejbContainer.close();

    }

}

ejb-jar.xml

<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar 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/ejb-jar_3_0.xsd"
         version="3.0">

</ejb-jar>

META-INF_ejb-jar.xml

<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar 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/ejb-jar_3_0.xsd"
         version="3.0">

</ejb-jar>

META-INF_MANIFEST.MF

Manifest-Version: 1.0

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>io.github.benas.labs</groupId>
        <artifactId>java-labs</artifactId>
        <version>1.0</version>
    </parent>

    <artifactId>ejb</artifactId>
    <version>1.0</version>
    <packaging>ejb</packaging>
    <name>EJB labs</name>


    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <openejb.version>4.6.0</openejb.version>
    </properties>

    <dependencies>

        <dependency>
            <groupId>org.apache.openejb</groupId>
            <artifactId>openejb-core</artifactId>
            <version>${openejb.version}</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-ejb-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <ejbVersion>3.2</ejbVersion>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>