001/*
002 *                    BioJava development code
003 *
004 * This code may be freely distributed and modified under the
005 * terms of the GNU Lesser General Public Licence.  This should
006 * be distributed with the code.  If you do not have a copy,
007 * see:
008 *
009 *      http://www.gnu.org/copyleft/lesser.html
010 *
011 * Copyright for this code is held jointly by the individual
012 * authors.  These should be listed in @author doc comments.
013 *
014 * For more information on the BioJava project and its aims,
015 * or to join the biojava-l mailing list, visit the home page
016 * at:
017 *
018 *      http://www.biojava.org/
019 *
020 */
021
022package org.biojava.bio.program.xff;
023
024import org.biojava.bio.seq.io.ParseException;
025import org.biojava.utils.stax.DelegationManager;
026import org.biojava.utils.stax.StAXContentHandler;
027import org.biojava.utils.stax.StringElementHandlerBase;
028import org.xml.sax.Attributes;
029import org.xml.sax.SAXException;
030
031/**
032 * StAX handler for xff:prop detail elements.  prop details are simple
033 * tag-value text, and they are added directly as properties of the feature.
034 *
035 * @author Thomas Down
036 * @since 1.2
037 */
038
039public class PropDetailHandler extends StringElementHandlerBase {
040    public static final XFFPartHandlerFactory PROPDETAIL_HANDLER_FACTORY = new XFFPartHandlerFactory() {
041            public StAXContentHandler getPartHandler(XFFFeatureSetHandler xffenv) {
042                return new PropDetailHandler(xffenv);
043            }
044        } ;
045
046    private String key;
047    private XFFFeatureSetHandler xffenv;
048
049    public PropDetailHandler(XFFFeatureSetHandler xffenv) {
050        super();
051        this.xffenv = xffenv;
052    }
053
054    public void startElement(String nsURI,
055                             String localName,
056                             String qName,
057                             Attributes attrs,
058                             DelegationManager dm)
059         throws SAXException
060    {
061        key = attrs.getValue("key");
062        if (key == null) {
063            throw new SAXException("No key attribute for xff:prop");
064        }
065        super.startElement(nsURI, localName, qName, attrs, dm);
066    }
067
068    protected void setStringValue(String s)
069        throws SAXException
070    {
071        try {
072            xffenv.getFeatureListener().addFeatureProperty(key, s);
073        } catch (ParseException pex) {
074            throw new SAXException(pex);
075        }
076    }
077}