Calling BPEL/ESB Webservice from standalone java client

In this article a sample is give how we call BPEL/ESB process from a java standalone program. The example is based on the HelloWorld process that accepts a single string as input.

The reason why I wrote this example, is that I did not find a straight forward simple java program to do this. Examples are supplied with BPEL (no 102) but not exactly what I want.

To run the example, open in JDeveloper a new project and add the following java class into your project. Make sure you add the following libraries to your project to make to java program runnable.
Here is the property file, to make the connection to your SOA Server.

context.properties
orabpel.platform=ias_10g
java.naming.factory.initial=com.evermind.server.rmi.RMIInitialContextFactory
java.naming.provider.url=opmn:ormi://edison.eurotransplant.nl:6003:oc4j_soa/orabpel
java.naming.security.principal=oc4jadmin
java.naming.security.credentials=scanner1

Here is the class file.

RMIClient.java

package nl.orasoa.bpel;

import com.collaxa.xml.XMLHelper;
import com.oracle.bpel.client.Locator;
import com.oracle.bpel.client.NormalizedMessage;
import com.oracle.bpel.client.delivery.IDeliveryService;

import java.util.Map;
import java.util.Properties;

import org.w3c.dom.Element;

public class RMIClient
{
public static

void main(String[] args)
throws Exception
{
try
{
String who = "Marc";
System.out.println("Who is " + who);

// properties in the classpath
Properties props = new java.util.Properties();

java.net.URL url =
ClassLoader.getSystemResource("context.properties");
props.load(url.openStream());
System.out.println(props);

String xml =
"<HelloWorldProcessRequest
  xmlns=\"http://bpel.eurotransplant.nl/HelloWorld\">";
xml = xml + "<input>" + who + "</input>";
xml = xml + "</HelloWorldProcessRequest>";

Locator locator = new Locator("default", "bpel", props);

IDeliveryService deliveryService =
(IDeliveryService)
 locator.lookupService(IDeliveryService.SERVICE_NAME);

NormalizedMessage nm = new NormalizedMessage();
nm.addPart("payload", xml);

NormalizedMessage res =
deliveryService.request("HelloWorld", "process", nm);

Map payload = res.getPayload();

System.out.println("BPELProcess HelloWorld executed!<br>");
Element partEl = (Element) payload.get("payload");
System.out.println("The Result was " + XMLHelper.toXML(partEl));
}
catch (Exception e)
{
e.printStackTrace();
}
}
}