org.kalypso.ogc.sensor.deegree.ObservationLinkMarshaller.java Source code

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Here is the source code for org.kalypso.ogc.sensor.deegree.ObservationLinkMarshaller.java

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/*----------------    FILE HEADER KALYPSO ------------------------------------------
 *
 *  This file is part of kalypso.
 *  Copyright (C) 2004 by:
 *
 *  Technical University Hamburg-Harburg (TUHH)
 *  Institute of River and coastal engineering
 *  Denickestrae 22
 *  21073 Hamburg, Germany
 *  http://www.tuhh.de/wb
 *
 *  and
 *
 *  Bjoernsen Consulting Engineers (BCE)
 *  Maria Trost 3
 *  56070 Koblenz, Germany
 *  http://www.bjoernsen.de
 *
 *  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.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact:
 *
 *  E-Mail:
 *  belger@bjoernsen.de
 *  schlienger@bjoernsen.de
 *  v.doemming@tuhh.de
 *
 *  ---------------------------------------------------------------------------*/
package org.kalypso.ogc.sensor.deegree;

import javax.xml.namespace.QName;

import org.apache.commons.lang3.StringUtils;
import org.kalypso.commons.xml.NS;
import org.kalypso.zml.obslink.TimeseriesLinkType;
import org.kalypsodeegree_impl.gml.schema.schemata.DeegreeUrlCatalog;
import org.kalypsodeegree_impl.io.sax.marshaller.IGmlMarshaller;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.AttributesImpl;

/**
 * @author Gernot Belger
 */
public class ObservationLinkMarshaller implements IGmlMarshaller<TimeseriesLinkType> {
    private static final String PREFIX_XLINK = "xlink"; //$NON-NLS-1$

    private static final String QNAME_XLINK_PREFIX = PREFIX_XLINK + ":"; //$NON-NLS-1$

    String QNAME_OBSLINK_PREFIX = DeegreeUrlCatalog.PREFIX_OBSLINK + ":"; //$NON-NLS-1$

    private final XMLReader m_reader;

    public ObservationLinkMarshaller(final XMLReader reader) {
        m_reader = reader;
    }

    @Override
    public void marshall(final TimeseriesLinkType element) throws SAXException {
        /* Basic names */
        final QName elementName = ObservationLinkHandler.TYPE_NAME;
        final String namespaceURI = elementName.getNamespaceURI();
        final String qname = QNAME_OBSLINK_PREFIX + elementName.getLocalPart();

        /* Build attributes */
        final AttributesImpl attributes = new AttributesImpl();
        addAttribute(attributes, "href", element.getHref()); //$NON-NLS-1$
        addAttribute(attributes, "actuate", element.getActuate()); //$NON-NLS-1$
        addAttribute(attributes, "arcrole", element.getArcrole()); //$NON-NLS-1$
        //    addAttribute( attributes, "linktype", element.getLinktype() ); //$NON-NLS-1$
        addAttribute(attributes, "role", element.getRole()); //$NON-NLS-1$
        addAttribute(attributes, "show", element.getShow()); //$NON-NLS-1$
        //    addAttribute( attributes, "timeaxis", element.getTimeaxis() ); //$NON-NLS-1$
        addAttribute(attributes, "title", element.getTitle()); //$NON-NLS-1$
        addAttribute(attributes, "type", element.getType()); //$NON-NLS-1$
        //    addAttribute( attributes, "valueaxis", element.getValueaxis() ); //$NON-NLS-1$

        /* write it */
        final ContentHandler contentHandler = m_reader.getContentHandler();
        contentHandler.startPrefixMapping(DeegreeUrlCatalog.PREFIX_OBSLINK, namespaceURI); //$NON-NLS-1$
        contentHandler.startPrefixMapping(PREFIX_XLINK, NS.XLINK); //$NON-NLS-1$
        contentHandler.startElement(namespaceURI, elementName.getLocalPart(), qname, attributes);
        contentHandler.endElement(namespaceURI, elementName.getLocalPart(), qname);
    }

    private void addAttribute(final AttributesImpl attributes, final String name, final String value) {
        if (StringUtils.isEmpty(value))
            return;

        final String qname = QNAME_XLINK_PREFIX + name; //$NON-NLS-1$

        attributes.addAttribute(NS.XLINK, name, qname, "string", value); //$NON-NLS-1$
    }
}