JacksonProvider.java

/*
 * ProActive Parallel Suite(TM):
 * The Open Source library for parallel and distributed
 * Workflows & Scheduling, Orchestration, Cloud Automation
 * and Big Data Analysis on Enterprise Grids & Clouds.
 *
 * Copyright (c) 2007 - 2017 ActiveEon
 * Contact: contact@activeeon.com
 *
 * This library is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation: version 3 of
 * the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * If needed, contact us to obtain a release under GPL Version 2 or 3
 * or a different license than the AGPL.
 */
package org.ow2.proactive_grid_cloud_portal.webapp;

import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;

import org.codehaus.jackson.map.AnnotationIntrospector;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.SerializationConfig;
import org.codehaus.jackson.map.introspect.JacksonAnnotationIntrospector;
import org.codehaus.jackson.xc.JaxbAnnotationIntrospector;


/**
 * Configuration class that allows to specialize the behaviour of
 * the JSon serialization made by the Jackson Provicer
 * Loaded by reflection somewhere in RestEasy.
 */
@Provider
@Produces(MediaType.APPLICATION_JSON)
public class JacksonProvider implements ContextResolver<ObjectMapper> {

    private static final ObjectMapper mapper = new ObjectMapper();

    public JacksonProvider() {
        AnnotationIntrospector introspector = new JaxbAnnotationIntrospector();
        AnnotationIntrospector secondary = new JacksonAnnotationIntrospector();
        mapper.setAnnotationIntrospector(new AnnotationIntrospector.Pair(introspector, secondary));
        mapper.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);
    }

    @Override
    public ObjectMapper getContext(Class<?> arg0) {
        return mapper;
    }

}