    001/* ========================================================================
    002 * JCommon : a free general purpose class library for the Java(tm) platform
    003 * ========================================================================
    004 *
    005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
    006 *
    007 * Project Info:  http://www.jfree.org/jcommon/index.html
    008 *
    009 * This library is free software; you can redistribute it and/or modify it
    010 * under the terms of the GNU Lesser General Public License as published by
    011 * the Free Software Foundation; either version 2.1 of the License, or
    012 * (at your option) any later version.
    013 *
    014 * This library is distributed in the hope that it will be useful, but
    015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
    017 * License for more details.
    018 *
    019 * You should have received a copy of the GNU Lesser General Public
    020 * License along with this library; if not, write to the Free Software
    021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
    022 * USA.
    023 *
    024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
    025 * in the United States and other countries.]
    026 *
    027 * --------------------
    028 * URLClassFactory.java
    029 * --------------------
    030 * (C)opyright 2003, 2004, by Thomas Morgner and Contributors.
    031 *
    032 * Original Author:  Thomas Morgner;
    033 * Contributor(s):   David Gilbert (for Object Refinery Limited);
    034 *
    035 * $Id: URLObjectDescription.java,v 1.3 2005/11/14 11:04:43 mungady Exp $
    036 *
    037 * Changes (from 19-Feb-2003)
    038 * -------------------------
    039 * 19-Feb-2003 : Added standard header and Javadocs (DG);
    040 * 29-Apr-2003 : Distilled from the JFreeReport project and moved into JCommon
    041 *
    042 */
    043
    044package org.jfree.xml.factory.objects;
    045
    046import java.net.URL;
    047
    048import org.jfree.io.IOUtils;
    049import org.jfree.util.Log;
    050import org.jfree.xml.Parser;
    051
    052/**
    053 * An object-description for a <code>URL</code> object.
    054 *
    055 * @author Thomas Morgner
    056 */
    057public class URLObjectDescription extends AbstractObjectDescription {
    058
    059    /**
    060     * Creates a new object description.
    061     */
    062    public URLObjectDescription() {
    063        super(URL.class);
    064        setParameterDefinition("value", String.class);
    065    }
    066
    067    /**
    068     * Creates an object based on this description.
    069     *
    070     * @return The object.
    071     */
    072    public Object createObject() {
    073        final String o = (String) getParameter("value");
    074        final String baseURL = getConfig().getConfigProperty(Parser.CONTENTBASE_KEY);
    075        try {
    076            try {
    077                final URL bURL = new URL(baseURL);
    078                return new URL(bURL, o);
    079            }
    080            catch (Exception e) {
    081                Log.warn("BaseURL is invalid: ", e);
    082            }
    083            return new URL(o);
    084        }
    085        catch (Exception e) {
    086            return null;
    087        }
    088    }
    089
    090    /**
    091     * Sets the parameters of this description object to match the supplied object.
    092     *
    093     * @param o  the object (should be an instance of <code>URL</code>).
    094     *
    095     * @throws ObjectFactoryException if the object is not an instance of <code>URL</code>.
    096     */
    097    public void setParameterFromObject(final Object o) throws ObjectFactoryException {
    098        if (!(o instanceof URL)) {
    099            throw new ObjectFactoryException("Is no instance of java.net.URL");
    100        }
    101
    102        final URL comp = (URL) o;
    103        final String baseURL = getConfig().getConfigProperty(Parser.CONTENTBASE_KEY);
    104        try {
    105            final URL bURL = new URL(baseURL);
    106            setParameter("value", IOUtils.getInstance().createRelativeURL(comp, bURL));
    107        }
    108        catch (Exception e) {
    109            Log.warn("BaseURL is invalid: ", e);
    110        }
    111        setParameter("value", comp.toExternalForm());
    112    }
    113
    114}