application/src/main/java/eclipselink/example/mysports/application/admin/MoxyContextHelper.java

/*******************************************************************************
 * Copyright (c) 2010-2013 Oracle. All rights reserved.
 * This program and the accompanying materials are made available under the 
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 
 * which accompanies this distribution. 
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at 
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *  dclarke - EclipseLink 2.3 - MySports Demo Bug 344608
 ******************************************************************************/
package eclipselink.example.mysports.application.admin;

import static org.eclipse.persistence.jaxb.MarshallerProperties.MEDIA_TYPE;
import static org.eclipse.persistence.jaxb.UnmarshallerProperties.JSON_INCLUDE_ROOT;

import java.util.HashMap;
import java.util.Map;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

import org.eclipse.persistence.jaxb.JAXBContextFactory;
import org.eclipse.persistence.jaxb.JAXBContextProperties;
import org.eclipse.persistence.oxm.MediaType;

/**
 * Utility class that provides access to the admin server using JAX-RS calls.
 * 
 * @author dclarke
 * @since EclipseLink 2.4
 */
public class MoxyContextHelper {

    /**
     * Cached {@link JAXBContext} for marshaling {@link HostedLeagues} and
     * {@link League} from the admin server requests.
     */
    private static JAXBContext jaxbContext;

    public static JAXBContext getContext() throws JAXBException {
        if (jaxbContext == null) {
            Map<String, Object> props = new HashMap<String, Object>(1);
            props.put(JAXBContextProperties.OXM_METADATA_SOURCE, "eclipselink/example/mysports/application/admin/leagues-oxm.xml");
            jaxbContext = JAXBContextFactory.createContext(new Class[] { HostedLeagues.class }, props);
        }
        return jaxbContext;
    }
    
    public static Marshaller createMarshaller(MediaType mediaType) throws JAXBException {
        Marshaller marshaller = getContext().createMarshaller();
        marshaller.setProperty(MEDIA_TYPE, mediaType.getMediaType());
        return marshaller;
    }

    public static Unmarshaller createUnmarshaller(MediaType mediaType) throws JAXBException {
        Unmarshaller unmarshaller = getContext().createUnmarshaller();
        unmarshaller.setProperty(MEDIA_TYPE, mediaType.getMediaType());
        unmarshaller.setProperty(JSON_INCLUDE_ROOT, false);
        return unmarshaller;
    }


}