CosmEventTransformer.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.openhab.persistence.cosm.internal;

import flexjson.JSONContext;
import flexjson.transformer.AbstractTransformer;

/**
 * This class defines what kind of content should be written for a {@link CosmEventBean}.
 *
 * @author Dmitry Krasnov
 * @since 1.1.0
 */
public class CosmEventTransformer extends AbstractTransformer {

    public void transform(Object obj) {
        if (obj instanceof CosmEventBean) {
            CosmEventBean pachubeEventBean = (CosmEventBean) obj;
            JSONContext context = getContext();
            context.writeOpenObject();

            context.writeName("id");
            context.write("\"" + pachubeEventBean.getId() + "\"");
            context.writeComma();
            context.writeName("current_value");
            context.write("\"" + pachubeEventBean.getValue() + "\"");
            if (null != pachubeEventBean.getMaxValue() && !pachubeEventBean.getMaxValue().isEmpty()) {
                context.writeComma();
                context.writeName("max_value");
                context.write("\"" + pachubeEventBean.getMaxValue() + "\"");
            }
            if (null != pachubeEventBean.getMinValue() && !pachubeEventBean.getMinValue().isEmpty()) {
                context.writeComma();
                context.writeName("min_value");
                context.write("\"" + pachubeEventBean.getMinValue() + "\"");
            }
            context.writeCloseObject();
        }
    }

}