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/*
* This file is part of %PACKAGENAME%.
*
* %PACKAGENAME% is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* %PACKAGENAME% 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with %PACKAGENAME%. If not, see <http://www.gnu.org/licenses/>.
*
* For more information please see <http://www.%PACKAGENAME%.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*
* Copyright 2009 Jacobs University Bremen, Peter Baumann.
*/
package wcs.server.servlet;
import wcs.server.core.*;
import java.io.StringReader;
import java.io.StringWriter;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Unmarshaller;
import net.opengis.ows.v_1_0_0.ExceptionReport;
import net.opengis.wcs.v_1_1_0.Capabilities;
import net.opengis.wcs.v_1_1_0.CoverageDescriptions;
import net.opengis.wcs.v_1_1_0.DescribeCoverage;
import net.opengis.wcs.v_1_1_0.GetCapabilities;
import net.opengis.wcs.v_1_1_0.GetCoverage;
/**
* The Web Coverage Service (WCS)
* This class provides methods for each of the WCS operations:
* - GetCapabilities
* - DescribeCoverage
* - GetCoverage
*/
public class WCS {
private static Boolean ok;
private static Boolean printOutput;
private static Boolean printLog;
private static String metaDbPath;
/**
* Public minimal constructor
* @param metadataDbPath path to the "dbparams.properties" file
*/
public WCS(String metadataDbPath)
{
printLog = true;
printOutput = true;
ok = true;
metaDbPath = metadataDbPath;
}
/**
* Record a log message
* @param msg Text of the message
*/
public static void log(String msg)
{
if (printLog)
System.err.println(msg);
}
/**
* WCS GetCapabilities operation
*/
public String GetCapabilities(String stringXml)
{
String output = "Default output. ";
String errmsg = "No error. ";
ok = false;
try
{
// read the input XML
log(">>> Reading the input XML file ... ");
JAXBContext context = JAXBContext.newInstance("net.opengis.wcs.v_1_1_0");
Unmarshaller unmarshaller = context.createUnmarshaller() ;
Object xml = unmarshaller.unmarshal(new StringReader(stringXml));
// Find out which class to execute ...
log(">>> It is a " + xml.getClass().getSimpleName() + " request.");
log(">>> Compiling data into XML format for GetCapabilities ... ");
GetCapabilities input = (GetCapabilities) xml;
Capabilities cap = new executeGetCapabilities(input,metaDbPath).get();
// Write the output
javax.xml.bind.JAXBContext jaxbCtx = javax.xml.bind.JAXBContext.newInstance(cap.getClass().getPackage().getName());
javax.xml.bind.Marshaller marshaller = jaxbCtx.createMarshaller();
marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_ENCODING, "UTF-8"); //NOI18N
marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
StringWriter strWriter = new StringWriter();
marshaller.marshal(cap, strWriter);
output = strWriter.toString();
log(">>> Done! User has the GetCapabilities result !");
ok = true;
}
catch (javax.xml.bind.JAXBException ex) {
java.util.logging.Logger.getLogger("global").log(java.util.logging.Level.SEVERE, null, ex); //NOI18N
ex.printStackTrace();
errmsg = ex.toString();
log("ERROR 1 ");
}
catch (WCSException e)
{
log("*** GOT WCS EXCEPTION !");
ExceptionReport report = e.getReport();
try
{
javax.xml.bind.JAXBContext jaxbCtx = javax.xml.bind.JAXBContext.newInstance(report.getClass().getPackage().getName());
javax.xml.bind.Marshaller marshaller = jaxbCtx.createMarshaller();
marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_ENCODING, "UTF-8"); //NOI18N
marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
marshaller.marshal(report, System.err);
StringWriter strWriter = new StringWriter();
marshaller.marshal(report, strWriter);
output = strWriter.toString();
ok = true;
log("Done with the Error Report !");
}
catch (Exception e2)
{
e2.printStackTrace();
errmsg = e2.toString();
log("ERROR 2");
}
}
catch (Exception e)
{
e.printStackTrace();
errmsg = e.toString();
log("ERROR 3");
}
if (ok == false)
output = errmsg;
if (printOutput)
System.out.println("*****************\nOUTPUT IS \n" + output);
return output;
}
/**
* WCS GetCoverage operation
*/
public String GetCoverage(String stringXml)
{
String output = "Default output. ";
String errmsg = "No error. ";
ok = false;
try
{
// read the input XML
log(">>> Reading the input XML file ... ");
JAXBContext context = JAXBContext.newInstance("net.opengis.wcs.v_1_1_0");
Unmarshaller unmarshaller = context.createUnmarshaller() ;
Object xml = unmarshaller.unmarshal(new StringReader(stringXml));
log(">>> It is a " + xml.getClass().getSimpleName() + " request.");
//Convert the WCS into WCPS
log(">>> Converting to WCPS ... please wait");
GetCoverage wcs = (GetCoverage) xml;
ProcessCoverage wcps = new convertGetCoverage(wcs, metaDbPath).get();
// Write the output WCPS request
log(">>> Writing the WCPS XML request ...");
javax.xml.bind.JAXBContext jaxbCtx = javax.xml.bind.JAXBContext.newInstance(wcps.getClass().getPackage().getName());
javax.xml.bind.Marshaller marshaller = jaxbCtx.createMarshaller();
marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_ENCODING, "UTF-8"); //NOI18N
marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
StringWriter strWriter = new StringWriter();
marshaller.marshal(wcps, strWriter);
output = strWriter.toString();
log(">>> Done! User has his WCPS request !");
ok = true;
}
catch (WCSException e)
{
ExceptionReport report = e.getReport();
try
{
javax.xml.bind.JAXBContext jaxbCtx = javax.xml.bind.JAXBContext.newInstance(report.getClass().getPackage().getName());
javax.xml.bind.Marshaller marshaller = jaxbCtx.createMarshaller();
marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_ENCODING, "UTF-8"); //NOI18N
marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
marshaller.marshal(report, System.err);
StringWriter strWriter = new StringWriter();
marshaller.marshal(report, strWriter);
output = strWriter.toString();
ok = true;
log("Done with the Error Report !");
}
catch (Exception e2)
{
e2.printStackTrace();
errmsg = e2.toString();
log("ERROR 4");
}
}
catch (Exception e)
{
e.printStackTrace();
errmsg = e.toString();
log("ERROR 5");
}
if (ok == false)
output = errmsg;
if (printOutput)
System.out.println("*****************\nOUTPUT IS \n" + output);
return output;
}
/**
* WCS DescribeCoverage operation
*/
public String DescribeCoverage(String stringXml)
{
String output = "Default output. ";
String errmsg = "No error. ";
ok = false;
try
{
// read the input XML
log(">>> Reading the input XML file ... ");
JAXBContext context = JAXBContext.newInstance("net.opengis.wcs.v_1_1_0");
Unmarshaller unmarshaller = context.createUnmarshaller() ;
Object xml = unmarshaller.unmarshal(new StringReader(stringXml));
log(">>> It is a " + xml.getClass().getSimpleName() + " request.");
log(">>> Querying the WCPS architecture for the details on this coverage ...");
DescribeCoverage input = (DescribeCoverage) xml;
CoverageDescriptions covs = new executeDescribeCoverage(input, metaDbPath).get();
// Write the output file
javax.xml.bind.JAXBContext jaxbCtx = javax.xml.bind.JAXBContext.newInstance(covs.getClass().getPackage().getName());
javax.xml.bind.Marshaller marshaller = jaxbCtx.createMarshaller();
marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_ENCODING, "UTF-8"); //NOI18N
marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
StringWriter strWriter = new StringWriter();
marshaller.marshal(covs, strWriter);
output = strWriter.toString();
log(">>> Done! User has the DescribeCoverage result !");
ok = true;
}
catch (WCSException e)
{
ExceptionReport report = e.getReport();
try {
javax.xml.bind.JAXBContext jaxbCtx = javax.xml.bind.JAXBContext.newInstance(report.getClass().getPackage().getName());
javax.xml.bind.Marshaller marshaller = jaxbCtx.createMarshaller();
marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_ENCODING, "UTF-8"); //NOI18N
marshaller.setProperty(javax.xml.bind.Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
marshaller.marshal(report, System.err);
StringWriter strWriter = new StringWriter();
marshaller.marshal(report, strWriter);
output = strWriter.toString();
ok = true;
log("Done with the Error Report !");
}
catch (Exception e2)
{
e2.printStackTrace();
errmsg = e2.toString();
log("ERROR 6");
}
}
catch (Exception e)
{
e.printStackTrace();
errmsg = e.toString();
log("ERROR 7");
}
if (ok == false)
output = errmsg;
if (printOutput)
System.out.println("*****************\nOUTPUT IS \n" + output);
return output;
}
}
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