/*
* Geotoolkit - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2012, Geomatys
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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.
*/
package org.geotoolkit.wps.converters.inputs.references;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Map;
import javax.xml.bind.JAXBException;
import javax.xml.stream.XMLStreamException;
import org.apache.sis.storage.DataStoreException;
import org.geotoolkit.data.FeatureCollection;
import org.geotoolkit.data.FeatureIterator;
import org.geotoolkit.feature.xml.XmlFeatureReader;
import org.apache.sis.util.UnconvertibleObjectException;
import org.geotoolkit.wps.converters.WPSConvertersUtils;
import org.geotoolkit.wps.io.WPSMimeType;
import org.geotoolkit.wps.xml.Reference;
import org.opengis.feature.Feature;
import org.opengis.util.FactoryException;
/**
* Implementation of ObjectConverter to convert a reference into a Feature.
*
* @author Quentin Boileau (Geomatys).
* @author Theo Zozime
*/
public final class ReferenceToFeatureConverter extends AbstractReferenceInputConverter<Feature> {
private static ReferenceToFeatureConverter INSTANCE;
private ReferenceToFeatureConverter() {
}
public static synchronized ReferenceToFeatureConverter getInstance() {
if (INSTANCE == null) {
INSTANCE = new ReferenceToFeatureConverter();
}
return INSTANCE;
}
@Override
public Class<Feature> getTargetClass() {
return Feature.class;
}
@Override
public Feature convert(Reference source, final Map<String, Object> params) throws UnconvertibleObjectException {
final String mime = source.getMimeType() != null ? source.getMimeType() : WPSMimeType.TEXT_XML.val();
final InputStream stream = getInputStreamFromReference(source);
//XML
if (mime.equalsIgnoreCase(WPSMimeType.TEXT_XML.val()) || mime.equalsIgnoreCase(WPSMimeType.APP_GML.val())
|| mime.equalsIgnoreCase(WPSMimeType.TEXT_GML.val())) {
XmlFeatureReader fcollReader = null;
try {
fcollReader = getFeatureReader(source);
final FeatureCollection fcoll = (FeatureCollection) fcollReader.read(stream);
if (fcoll.size() == 1) {
Feature feat = null;
final FeatureIterator ite = fcoll.iterator();
try {
if (ite.hasNext()) {
feat = (Feature) WPSConvertersUtils.fixFeature(ite.next());
}
} finally {
ite.close();
}
return feat;
} else {
throw new UnconvertibleObjectException("Stream contain more than one Feature.");
}
} catch (FactoryException ex) {
throw new UnconvertibleObjectException("Invalid reference input : can't spread CRS.", ex);
} catch (IllegalArgumentException ex) {
throw new UnconvertibleObjectException("Unable to read the feature with the specified schema.", ex);
} catch (JAXBException ex) {
throw new UnconvertibleObjectException("Invalid reference input : can't read reference schema.", ex);
} catch (MalformedURLException ex) {
throw new UnconvertibleObjectException("Invalid reference input : Malformed schema or resource.", ex);
} catch (IOException ex) {
throw new UnconvertibleObjectException("Invalid reference input : IO.", ex);
} catch (XMLStreamException ex) {
throw new UnconvertibleObjectException("Invalid reference input.", ex);
} finally {
if (fcollReader != null) {
fcollReader.dispose();
}
}
} else if (mime.equalsIgnoreCase(WPSMimeType.APP_GEOJSON.val())) {
try {
return WPSConvertersUtils.readFeatureFromJson(URI.create(source.getHref()));
} catch (DataStoreException | URISyntaxException | IOException ex) {
throw new UnconvertibleObjectException(ex);
}
}
else
throw new UnconvertibleObjectException("Unsupported mime-type for " + this.getClass().getName() + " : " + source.getMimeType());
}
}