NodeMetadataSerializer.java

/* ==================================================================
 * NodeMetadataSerializer.java - 13/11/2016 11:56:39 AM
 * 
 * Copyright 2007-2016 SolarNetwork.net Dev Team
 * 
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of the GNU General Public License as 
 * published by the Free Software Foundation; either version 2 of 
 * the License, or (at your option) any later version.
 * 
 * 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 
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License 
 * along with this program; if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 
 * 02111-1307 USA
 * ==================================================================
 */

package net.solarnetwork.central.support;

import java.io.IOException;
import org.joda.time.DateTime;
import com.fasterxml.jackson.core.JsonGenerationException;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.std.StdSerializer;
import net.solarnetwork.central.domain.NodeMetadata;
import net.solarnetwork.domain.GeneralDatumMetadata;

/**
 * JSON serializer for {@link NodeMetadata}.
 * 
 * @author matt
 * @version 1.0
 */
public class NodeMetadataSerializer extends StdSerializer<NodeMetadata> {

	public NodeMetadataSerializer() {
		super(NodeMetadata.class);
	}

	@Override
	public void serialize(NodeMetadata meta, JsonGenerator generator, SerializerProvider provider)
			throws IOException, JsonGenerationException {
		if ( meta == null ) {
			generator.writeNull();
			return;
		}
		generator.writeStartObject();
		Long l = meta.getNodeId();
		if ( l != null ) {
			generator.writeNumberField("nodeId", l);
		}

		DateTime dt = meta.getCreated();
		if ( dt != null ) {
			generator.writeObjectField("created", dt);
		}

		dt = meta.getUpdated();
		if ( dt != null ) {
			generator.writeObjectField("updated", dt);
		}

		GeneralDatumMetadata metadata = meta.getMetadata();
		if ( metadata != null ) {
			JsonUtils.writeMetadata(generator, metadata);
		}

		generator.writeEndObject();

	}

}