/**
* Copyright (C) 2012-2017 52°North 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 published
* by 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.sos.binding.rest.resources.offerings;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import net.opengis.sos.x20.CapabilitiesDocument;
import net.opengis.sos.x20.CapabilitiesType;
import net.opengis.sos.x20.ObservationOfferingType;
import net.opengis.swes.x20.AbstractContentsType.Offering;
import org.apache.xmlbeans.XmlException;
import org.apache.xmlbeans.XmlObject;
import org.n52.sos.binding.rest.requests.RequestHandler;
import org.n52.sos.binding.rest.requests.ResourceNotFoundResponse;
import org.n52.sos.binding.rest.requests.RestRequest;
import org.n52.sos.binding.rest.requests.RestResponse;
import org.n52.sos.ogc.ows.OwsExceptionReport;
import org.n52.sos.request.GetCapabilitiesRequest;
/**
* @author <a href="mailto:e.h.juerrens@52north.org">Eike Hinderk Jürrens</a>
*
*/
public class OfferingsRequestHandler extends RequestHandler {
@Override
public RestResponse handleRequest(RestRequest request) throws OwsExceptionReport, XmlException, IOException
{
if (request != null && request instanceof OfferingsRequest){
// 0 submit request to SOS core
GetCapabilitiesRequest getCapabilitiesRequest = ((OfferingsRequest) request).getGetCapabilitiesRequest();
// 1 handle core response
XmlObject xb_getCapabilitiesResponse = executeSosRequest(getCapabilitiesRequest);
if (xb_getCapabilitiesResponse instanceof CapabilitiesDocument)
{
CapabilitiesDocument xb_capaCapabilitiesDocument = (CapabilitiesDocument) xb_getCapabilitiesResponse;
CapabilitiesType xb_sosCapabilities = xb_capaCapabilitiesDocument.getCapabilities();
boolean isByIdRequest = request instanceof OfferingByIdRequest;
List<String> offeringIdentifiers = new ArrayList<String>();
if (isOfferingArrayAvailable(xb_sosCapabilities))
{
// 1.1 if by id: get observation offering for id
Offering[] xb_offerings = xb_sosCapabilities.getContents().getContents().getOfferingArray();
for (Offering xb_offering : xb_offerings)
{
ObservationOfferingType xb_observationOffering = getObservationOfferingFromOffering(xb_offering);
if (xb_observationOffering.isSetIdentifier())
{
if (isByIdRequest && hasOfferingTheCorrectIdForByIdRequest(request, xb_observationOffering))
{
return new OfferingByIdResponse(getObservationOfferingFromOffering(xb_offering));
}
else if (!isByIdRequest)
{
offeringIdentifiers.add(xb_observationOffering.getIdentifier());
}
}
}
}
// 2 return response
if (isByIdRequest && offeringIdentifiers.isEmpty())
{
return new ResourceNotFoundResponse(bindingConstants.getResourceOfferings(),
((OfferingByIdRequest)request).getOfferingIdentifier());
}
return new OfferingsResponse(offeringIdentifiers);
}
}
throw logRequestTypeNotSupportedByThisHandlerAndCreateException(request,this.getClass().getName());
}
private boolean hasOfferingTheCorrectIdForByIdRequest(RestRequest request,
ObservationOfferingType xb_observationOffering)
{
return xb_observationOffering.getIdentifier().equalsIgnoreCase(((OfferingByIdRequest)request).getOfferingIdentifier());
}
private boolean isOfferingArrayAvailable(CapabilitiesType xb_sosCapabilities)
{
return xb_sosCapabilities.isSetContents() &&
xb_sosCapabilities.getContents() != null
&& xb_sosCapabilities.getContents().getContents() != null
&& xb_sosCapabilities.getContents().getContents().getOfferingArray() != null;
}
}