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:
044: package org.jfree.xml.factory.objects;
045:
046: import java.net.URL;
047:
048: import org.jfree.io.IOUtils;
049: import org.jfree.util.Log;
050: import org.jfree.xml.Parser;
051:
052: /**
053: * An object-description for a <code>URL</code> object.
054: *
055: * @author Thomas Morgner
056: */
057: public 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(
075: Parser.CONTENTBASE_KEY);
076: try {
077: try {
078: final URL bURL = new URL(baseURL);
079: return new URL(bURL, o);
080: } catch (Exception e) {
081: Log.warn("BaseURL is invalid: ", e);
082: }
083: return new URL(o);
084: } catch (Exception e) {
085: return null;
086: }
087: }
088:
089: /**
090: * Sets the parameters of this description object to match the supplied object.
091: *
092: * @param o the object (should be an instance of <code>URL</code>).
093: *
094: * @throws ObjectFactoryException if the object is not an instance of <code>URL</code>.
095: */
096: public void setParameterFromObject(final Object o)
097: throws ObjectFactoryException {
098: if (!(o instanceof URL)) {
099: throw new ObjectFactoryException(
100: "Is no instance of java.net.URL");
101: }
102:
103: final URL comp = (URL) o;
104: final String baseURL = getConfig().getConfigProperty(
105: Parser.CONTENTBASE_KEY);
106: try {
107: final URL bURL = new URL(baseURL);
108: setParameter("value", IOUtils.getInstance()
109: .createRelativeURL(comp, bURL));
110: } catch (Exception e) {
111: Log.warn("BaseURL is invalid: ", e);
112: }
113: setParameter("value", comp.toExternalForm());
114: }
115:
116: }
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