1 Reply Latest reply on Sep 12, 2006 4:39 AM by hispeedsurfer

Missing comprehension in EJB3 and JBoss in Elcipse

hispeedsurfer Sep 3, 2006 9:22 AM

Hello,
I have installed the JBoss AS (jboss-4.0.4.GA) with EJB3 support(option: all). The EJB3Trail.ear works fine. Now I have try to build my first simple EJB3 Webapplication with Stateless SessionBean like the first EJB3Trail example.

The java files from EJB3Trail source are present: Calculator.java, StatelessCalculator.java, RemoteCalculator.java and StatelessCalculator2.java
The calculate.jsp as well.

What I have to do, running this example in JBoss Eclipse IDE 2.0

Hope anybody can help me

Thanks
Andreas

1. Re: Missing comprehension in EJB3 and JBoss in Elcipse

hispeedsurfer Sep 12, 2006 4:39 AM (in response to hispeedsurfer)

Hello,
her is my solution tot he problem above, solved with JBoss Seam and Facelets
1.) First I follow the discription http://wiki.jboss.org/wiki/Wiki.jsp?page=JBossSeamGettingStartedGuide and installed JBoss IDE and SEAM as described.

2.) Now the steps in Eclipse for an new ?Enterprise Application Project?
Project Name: statelessSb
J2EE Modules -> New Module: statelessSbEJB, statelessSbWeb
The Workspace is defined as V:\seam-workspace

Under Win CMD type as follow: (the same like 1.)
V:\seam-workspace\jboss-seam-1.0.1.GA\seam-gen>seam new-wtp-project statelessSb
V:\seam-workspace\jboss-seam-1.0.1.GA\seam-gen>seam new-stateless-action statelessSb StatelessCalculator
V:\seam-workspace\jboss-seam-1.0.1.GA\seam-gen>seam new-action-page statelessSb home StatelessCalculator

Now Refresh statelssSb, statelessSbEJB and statelessWeb in Eclipse and set ?Configure Buildpath? from statelessSbEJB (also see in 1.)

Code for home.xhtml:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
 xmlns:s="http://jboss.com/products/seam/taglib"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:f="http://java.sun.com/jsf"
 xmlns:h="http://java.sun.com/jsf/html">
<body>
<ui:composition template="/WEB-INF/layout/template.xhtml">

 <ui:define name="body">
 <h1>Seam Generated Page named: "Calculator"</h1>
 <h:form>
 <div>
 <fieldset>
 <div>
 <div><h:outputLabel for="start">Start age: </h:outputLabel></div>
 <div><h:inputText value="#{StatelessCalculator.start}"/><br /></div>
 </div>
 <div>
 <div><h:outputLabel>End age: </h:outputLabel></div>
 <div><h:inputText value="#{StatelessCalculator.end}"/><br /></div>
 </div>
 <div>
 <div><h:outputLabel>Growth Rate: </h:outputLabel></div>
 <div><h:inputText value="#{StatelessCalculator.growthrate}"/><br /></div>
 </div>
 <div>
 <div><h:outputLabel>saving: </h:outputLabel></div>
 <div><h:inputText value="#{StatelessCalculator.saving}"/><br /></div>
 </div>
 <div>
 <div><h:commandButton type="submit" value="Calculate" action="#{StatelessCalculator.calculate}"/></div>
 </div>
 <div>
 <div><h:outputText>Result: "#{StatelessCalculator.resultString}"</h:outputText></div>
 </div>

 </fieldset>
 </div>
 </h:form>
 </ui:define>

</ui:composition>
</body>
</html>

Code for StatelessCalculator.java:

package org.jboss.business;

import javax.ejb.Local;

@Local
public interface StatelessCalculator {

 //seam-gen method
 public String doAction();

 //add additional interface methods here
 public String calculate ();

 public double calculate(int start, int end, double growth, double saving);

 public int getEnd();

 public void setEnd(int end);

 public double getGrowthrate();

 public void setGrowthrate(double growthrate);

 public double getSaving();

 public void setSaving(double saving);

 public int getStart();

 public void setStart(int start);

 public double getResult();

 public void setResult(double result);

 public String getResultString();

 public void setResultString(String resultString);
}

Code for StatelessCalculatorAction.java:

package org.jboss.business;

import static org.jboss.seam.ScopeType.SESSION;

import java.io.Serializable;
import java.text.NumberFormat;

import javax.ejb.Stateless;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;

@Stateless
@Name("StatelessCalculator")
@Scope(SESSION)
public class StatelessCalculatorAction implements StatelessCalculator,
 Serializable {

 private int start = 25;
 private int end = 65;
 private double growthrate = 0.08;
 private double saving = 300.0;
 private double result = 0;
 private String resultString = null;
 /**
 *
 */
 private static final long serialVersionUID = 1L;

 // seam-gen method
 public String doAction() {
 return "success";
 }

 // add additional action methods
 public double calculate(int start, int end, double growth, double saving){
 double tmp = Math.pow(1. + growthrate / 12., 12. * (end - start) + 1);
 return saving * 12. * (tmp - 1) / growth;
 }

 public String calculate() {
 NumberFormat nf = NumberFormat.getInstance();
 nf.setMaximumFractionDigits(2);
 result = calculate(start, end, growthrate, saving);
 resultString = nf.format(result);
 return "success";
 }



 public int getEnd() {
 return end;
 }

 public void setEnd(int end) {
 this.end = end;
 }

 public double getGrowthrate() {
 return growthrate;
 }

 public void setGrowthrate(double growthrate) {
 this.growthrate = growthrate;
 }

 public double getSaving() {
 return saving;
 }

 public void setSaving(double saving) {
 this.saving = saving;
 }

 public int getStart() {
 return start;
 }

 public void setStart(int start) {
 this.start = start;
 }

 public double getResult() {
 return result;
 }

 public void setResult(double result) {
 this.result = result;
 }

 public String getResultString() {
 return resultString;
 }

 public void setResultString(String resultString) {
 this.resultString = resultString;
 }

}

Finally ADD the Project to JBoss Server, start and see the result by typing http://localhost:8080/statelessSb in browser

Have fun
Andreas