ClientJServiceFactoryFinder.java

package org.objectweb.jonas.ws;

import java.io.InputStream;
import java.util.Properties;

public class ClientJServiceFactoryFinder {

    private static Properties props;

    private static final String JONAS_SERVICE_FACTORY = "jonas.service.ws.factory.class";

    private ClientJServiceFactoryFinder() {
    }

    private static String factoryClassName = null;

    public static JServiceFactory getJOnASServiceFactory() throws WSServiceException {
        JServiceFactory factory = null;
        ClassLoader current = Thread.currentThread().getContextClassLoader();

        if (props == null) {
            props = new Properties();
            try {
                InputStream is = current.getResourceAsStream("jonas-client.properties");
                if (is != null) {
                    props.load(is);
                    factoryClassName = props.getProperty(JONAS_SERVICE_FACTORY);
                } else {
                    System.err.println("Cannot load jonas-client.properties from ClassLoader");
                }
            } catch (Exception e) {
                String err = "Error when trying to get jonas property '" + JONAS_SERVICE_FACTORY
                        + "' from jonas-client.properties";
                throw new WSServiceException(err, e);
            }
        }

        if (factoryClassName == null) {
            String err = "jonas property '" + JONAS_SERVICE_FACTORY + "' must be set! in jonas-client.properties";
            throw new WSServiceException(err);
        }

        // instanciation
        try {
            factory = (JServiceFactory) current.loadClass(factoryClassName).newInstance();
        } catch (ClassNotFoundException cnfe) {
            String err = "ClassNotFound '" + factoryClassName + "' in JOnAS ClassLoader";
            throw new WSServiceException(err);
        } catch (InstantiationException ie) {
            String err = "Instantiation error for new '" + factoryClassName + "'";
            throw new WSServiceException(err);
        } catch (IllegalAccessException ie) {
            String err = "Illegal Access for new '" + factoryClassName + "'";
            throw new WSServiceException(err);
        }

        return factory;

    }

}

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