/*
* Copyright 1998-2014 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
* Access and use of this software shall impose the following obligations
* and understandings on the user. The user is granted the right, without
* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
* documentation for any purpose whatsoever, provided that this entire
* notice appears in all copies of the software, derivative works and
* supporting documentation. Further, UCAR requests that the user credit
* UCAR/Unidata in any publications that result from the use of this
* software or in any product that includes this software. The names UCAR
* and/or Unidata, however, may not be used in any advertising or publicity
* to endorse or promote any products or commercial entity unless specific
* written permission is obtained from UCAR/Unidata. The user also
* understands that UCAR/Unidata is not obligated to provide the user with
* any support, consulting, training or assistance of any kind with regard
* to the use, operation and performance of this software nor to provide
* the user with any updates, revisions, new versions or "bug fixes."
*
* THIS SOFTWARE IS PROVIDED BY UCAR/UNIDATA "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL UCAR/UNIDATA BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package thredds.server.cdmremote.view;
import java.io.IOException;
import java.io.InputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.jdom2.Document;
import org.jdom2.output.Format;
import org.jdom2.output.XMLOutputter;
import org.jdom2.transform.XSLTransformer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import thredds.server.cdmremote.params.CdmrfQueryBean;
import ucar.nc2.constants.FeatureType;
import ucar.nc2.ft.FeatureDatasetPoint;
import ucar.nc2.ft.point.writer.FeatureDatasetPointXML;
/**
* @author mhermida
*
*/
public final class CdmrfTextViewFactory {
private static final Logger log = LoggerFactory.getLogger(CdmrfTextViewFactory.class);
private static CdmrfTextViewFactory INSTANCE;
private CdmrfTextViewFactory(){}
public static CdmrfTextViewFactory getInstance(){
if(INSTANCE == null){
INSTANCE = new CdmrfTextViewFactory();
}
return INSTANCE;
}
public String getFormViewForDataset(HttpServletRequest req, HttpServletResponse res, FeatureDatasetPoint fdp, String absPath, CdmrfQueryBean query) throws IOException {
FeatureDatasetPointXML xmlWriter = new FeatureDatasetPointXML(fdp, absPath);
CdmrfQueryBean.RequestType reqType = query.getRequestType();
String infoString;
try {
if (reqType == CdmrfQueryBean.RequestType.capabilities) {
Document doc = xmlWriter.getCapabilitiesDocument();
XMLOutputter fmt = new XMLOutputter(Format.getPrettyFormat());
infoString = fmt.outputString(doc);
} else if (reqType == CdmrfQueryBean.RequestType.stations) {
Document doc = xmlWriter.makeStationCollectionDocument(query.getLatLonRect(), query.getStnNames());
XMLOutputter fmt = new XMLOutputter(Format.getPrettyFormat());
infoString = fmt.outputString(doc);
} else if (reqType == CdmrfQueryBean.RequestType.form) {
String xslt = fdp.getFeatureType() == FeatureType.STATION ? "ncssSobs.xsl" : "fmrcPoint.xsl";
InputStream is = getXSLT(xslt);
Document doc = xmlWriter.getCapabilitiesDocument();
XSLTransformer transformer = new XSLTransformer(is);
Document html = transformer.transform(doc);
XMLOutputter fmt = new XMLOutputter(Format.getPrettyFormat());
infoString = fmt.outputString(html);
} else {
return null;
}
} catch (Exception e) {
log.error("SobsServlet internal error on "+fdp.getLocation(), e);
res.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "SobsServlet internal error");
return null;
}
return infoString;
}
private InputStream getXSLT(String xslName) {
return getClass().getResourceAsStream("/resources/xsl/" + xslName);
}
}