org.n52.tamis.core.json.deserialize.capabilities.CapabilitiesDeserializer.java Source code

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Here is the source code for org.n52.tamis.core.json.deserialize.capabilities.CapabilitiesDeserializer.java

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/**
 * Copyright (C) 2016-2016 52North Initiative for Geospatial Open Source
 * Software GmbH
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License version 2 as publishedby the Free
 * Software Foundation.
 *
 * If the program is linked with libraries which are licensed under one of the
 * following licenses, the combination of the program with the linked library is
 * not considered a "derivative work" of the program:
 *
 *     - Apache License, version 2.0
 *     - Apache Software License, version 1.0
 *     - GNU Lesser General Public License, version 3
 *     - Mozilla Public License, versions 1.0, 1.1 and 2.0
 *     - Common Development and Distribution License (CDDL), version 1.0
 *
 * Therefore the distribution of the program linked with libraries licensed under
 * the aforementioned licenses, is permitted by the copyright holders if the
 * distribution is compliant with both the GNU General Public License version 2
 * and the aforementioned licenses.
 *
 * 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.
 */
package org.n52.tamis.core.json.deserialize.capabilities;

import java.io.IOException;

import org.n52.tamis.core.javarepresentations.capabilities.Capabilities_Tamis;
import org.n52.tamis.core.urlconstants.URL_Constants_TAMIS;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.ObjectCodec;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonNode;

/**
 * Class to deserialize the extended capabilities document returned by the WPS
 * proxy.
 * 
 * @author Christian Danowski (contact: c.danowski@52north.org)
 *
 */
public class CapabilitiesDeserializer extends JsonDeserializer<Object> {

    Logger logger = LoggerFactory.getLogger(CapabilitiesDeserializer.class);

    /*
     * The service id constant is (temporarily) used, if there is only one
     * single WPS instance. TODO how to address multiple WPS instances properly?
     */
    private static final String SERVICE_ID_CONSTANT = "1";

    /**
     * Parses the extended capabilities document and creates the shortened
     * document as instance of {@link Capabilities_Tamis}.
     */
    @Override
    public Capabilities_Tamis deserialize(JsonParser jsonParser, DeserializationContext desContext)
            throws IOException, JsonProcessingException {
        logger.info("Start deserialization of extended WPS capabilities document.");

        // initialization
        ObjectCodec codec = jsonParser.getCodec();
        JsonNode node = codec.readTree(jsonParser);

        // create empty shortened CapabilitiesDocument.
        Capabilities_Tamis capabilities_short = new Capabilities_Tamis();

        /*
         * id
         * 
         * TODO FIXME how to determine the id?
         */
        JsonNode capabilitiesNode = node.get("Capabilities");
        JsonNode serviceIdentificationNode = capabilitiesNode.get("ServiceIdentification");

        capabilities_short.setId(SERVICE_ID_CONSTANT);

        /*
         * label
         */
        String title = serviceIdentificationNode.get("Title").asText();

        capabilities_short.setLabel(title);

        /*
         * type
         */
        String serviceType = serviceIdentificationNode.get("ServiceType").asText();

        capabilities_short.setType(serviceType);

        /*
         * url
         * 
         * url is not set here! Insteadt URL will be set by
         * CapabilitiesForwarder, since there the baseURL can be extracted from
         * the HttpServletRequest object.
         */

        /*
         * e-mail contact
         */
        JsonNode serviceContact = capabilitiesNode.get("ServiceProvider").get("ServiceContact");
        JsonNode contactInfo = serviceContact.get("ContactInfo");

        if (contactInfo.has("Address")) {
            JsonNode address = contactInfo.get("Address");

            if (address.has("ElectronicMailAddress")) {
                String mailAdress = address.get("ElectronicMailAddress").asText();
                capabilities_short.setContact(mailAdress);
            }
        }

        else if (serviceContact.has("IndividualName"))
            capabilities_short.setContact(serviceContact.get("IndividualName").asText());

        else
            capabilities_short.setContact("N/A");

        logger.info("Deserialization ended! The following capabilities instance was created: {}",
                capabilities_short);

        return capabilities_short;
    }

}