Christoph, Could you add an entry at Bugzilla and create an attachement containing your generator and an example showing its features? If you do it I will take care of it and add it to the scratchpad.
Cheers, Reinhard > -----Original Message----- > From: Christoph Gaffga [mailto:[EMAIL PROTECTED] > Sent: Wednesday, September 10, 2003 12:29 AM > To: [EMAIL PROTECTED] > Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED] > Subject: Re: EJB + Cocoon, "Best Practices" / Betwixt > > > > that invokes the EJB and returns the DTO. It then passes the DTO to > Betwixt > > which converts it to SAX events. I posted the BeanGenerator on the > > list a > > Perheaps you are also interested in a BetwixtTransformer, > analoge to CastorTransformer? I post it here, perheaps anyone > can put it in the scratchpad? > > regards > Christoph > > > org.apache.cocoon.tranformation.BetwixtTransformer: > --------------------------------------------------- > > /* > > ============================================================== > ============== > The Apache Software License, Version 1.1 > > ============================================================== > ============== > Copyright (C) 1999-2003 The Apache Software Foundation. All > rights reserved. Redistribution and use in source and binary > forms, with or without > modifica- > tion, are permitted provided that the following conditions > are met: 1. Redistributions of source code must retain the > above copyright notice, > this list of conditions and the following disclaimer. > 2. Redistributions in binary form must reproduce the above > copyright notice, > this list of conditions and the following disclaimer in > the documentation > and/or other materials provided with the distribution. > 3. The end-user documentation included with the > redistribution, if any, must > include the following acknowledgment: "This product > includes software > developed by the Apache Software Foundation > (http://www.apache.org/)." > Alternately, this acknowledgment may appear in the > software itself, if > and wherever such third-party acknowledgments normally > appear. 4. The names "Apache Cocoon" and "Apache Software > Foundation" must not be > used to endorse or promote products derived from this > software without > prior written permission. For written permission, please contact > [EMAIL PROTECTED] > 5. Products derived from this software may not be called > "Apache", nor may > "Apache" appear in their name, without prior written > permission of the > Apache Software Foundation. > THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR > IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE > IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A > PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE > APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE > FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, > OR CONSEQUENTIAL DAMAGES > (INCLU- > DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS > OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS > INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF > LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT > (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY > OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE > POSSIBILITY OF SUCH DAMAGE. This software consists of > voluntary contributions made by many individuals on behalf > of the Apache Software Foundation and was originally > created by Stefano Mazzocchi <[EMAIL PROTECTED]>. For more > information on the Apache Software Foundation, please see > <http://www.apache.org/>. */ > > package org.apache.cocoon.transformation; > > import java.lang.reflect.Proxy; > import java.util.Collection; > import java.util.Iterator; > import java.util.Map; > > import org.apache.avalon.framework.configuration.Configurable; > import org.apache.avalon.framework.configuration.Configuration; > import > org.apache.avalon.framework.configuration.ConfigurationException; > import org.apache.avalon.framework.parameters.Parameters; > import org.apache.cocoon.environment.Context; > import org.apache.cocoon.environment.ObjectModelHelper; > import org.apache.cocoon.environment.Request; > import org.apache.cocoon.environment.Session; > import org.apache.cocoon.environment.SourceResolver; > import org.apache.commons.betwixt.XMLIntrospector; > import org.apache.commons.betwixt.io.SAXBeanWriter; > import org.apache.commons.betwixt.strategy.ClassNormalizer; > import org.apache.commons.logging.impl.LogKitLogger; > import org.xml.sax.Attributes; > import org.xml.sax.SAXException; > > /** > * Betwixt transformer marshals a object from the Sitemap, > Session, Request or > * the Conext into a series of SAX events. > * > * Configuation: The betwixt transformer can be configured to > not output element > * reference ids. The default setting is to output reference IDs. > * <pre> > * <map:transformer name="betwixt" > src="org.apache.cocoon.transformation.BetwixtTransformer" > * <ref-ids>true</ref-ids> > * </map:transformer> > * </pre> > * > * A sample for the use: > * <pre> > * <root > xmlns:betwixt="http://apache.org/cocoon/betwixt-transfomer"> > * <betwixt:include name="invoice" /> > * <betwixt:include name="product" scope="sitemap" /> > * <betwixt:include name="product2" > element="other-product" /> > * </root> > * </pre> > * The <code>BetwixtTransfomer</code> support only one > Element <code>betwixt:include</code>. > * This element is replaced with the marshalled object. The > Object given through the > * attribute <code>name</code> will be searched in the > <code>request</code>, <code>session</code>, > * <code>context</code> and at least in <code>sitemap</code>. > * If the scope is explicitly given, the object will ge > located only there. > * The attribute <code>element</code> can be given to specify > an alternativ > * root element for the object. Collections are marshalled by > marshalling > * each object it contains. > * > * @see <a > href="http://jakarta.apache.org/commons/betwixt/";>Betwixt > Projekt Homepage</a> > * @author <a href="mailto:[EMAIL PROTECTED]">Christoph > Gaffga</a> */ public class BetwixtTransformer extends > AbstractTransformer implements Configurable { > private static final String BETWIXT_NSURI = > "http://apache.org/cocoon/betwixt-transfomer";; > > private final static String CMD_INCLUDE = "include"; > private final static String ATTR_NAME = "name"; > private final static String ATTR_SCOPE = "scope"; > private final static String SCOPE_SITEMAP = "sitemap"; > private final static String SCOPE_SESSION = "session"; > private final static String SCOPE_REQUEST = "request"; > private final static String SCOPE_CONTEXT = "context"; > private final static String ATTR_ELEMENT = "element"; > private final static String CONF_REFIDS = "ref-ids"; > > // Introspector to share XMLBeanInfo cache > private static XMLIntrospector introspector; > > private boolean refIds = true; > > private Map objectModel = null; > private boolean inBetwixtElement = false; > private SAXBeanWriter beanWriter = null; > > public void configure(Configuration conf) throws > ConfigurationException { > final String refIds = conf.getChild(CONF_REFIDS).getValue("true"); > this.refIds = "false".equals(refIds) || "no".equals(refIds); > } > > public void setup(SourceResolver resolver, Map objectModel, > String src, Parameters par) { > this.objectModel = objectModel; > } > > public void recycle() { > this.objectModel = null; > this.inBetwixtElement = false; > } > > public void endElement(String uri, String name, String raw) > throws SAXException { > if (BETWIXT_NSURI.equals(uri)) { > this.inBetwixtElement = false; > } else { > super.endElement(uri, name, raw); > } > } > > public void startElement(String uri, String name, String > raw, Attributes > attr) throws > SAXException { > if (BETWIXT_NSURI.equals(uri)) { > this.inBetwixtElement = true; > process(name, attr); > } else { > super.startElement(uri, name, raw, attr); > } > } > > public void characters(char[] ch, int start, int len) > throws SAXException { > if (!this.inBetwixtElement) { > super.characters(ch, start, len); > } > } > > private void process(String command, Attributes attr) > throws SAXException { > if (CMD_INCLUDE.equals(command)) { > final String scope = attr.getValue(ATTR_SCOPE); > final String name = attr.getValue(ATTR_NAME); > if (name == null) { > throw new SAXException("Required attribute name is > missing on element " + CMD_INCLUDE); > } > > final String element = attr.getValue(ATTR_ELEMENT); > if (element == null) { > throw new SAXException("Attribute " + ATTR_ELEMENT + > " can not be > empty"); > } > > Object bean = null; > if (scope == null || SCOPE_REQUEST.equals(scope)) { > final Request request = > ObjectModelHelper.getRequest(objectModel); > bean = request.getAttribute(name); > } > if ( (scope == null && bean == null) || > SCOPE_SESSION.equals(scope)) { > final Session session = > ObjectModelHelper.getRequest(objectModel).getSession(false); > if (session != null) { > bean = session.getAttribute(name); > } > } > if ( (scope == null && bean == null) || > SCOPE_CONTEXT.equals(scope)) { > final Context context = > ObjectModelHelper.getContext(objectModel); > if (context != null) { > bean = context.getAttribute(name); > } > } > if ( (scope == null && bean == null) || > SCOPE_SITEMAP.equals(scope)) { > bean = objectModel.get(name); > } > > if (bean != null) { > includeBean(name, bean, element); > } else { > getLogger().warn("Bean " + name + " could not be found"); > } > } else { > throw new SAXException("Unknown command: " + command); > } > } > > private void includeBean(String name, Object bean, String element) { > try { > if (this.beanWriter == null) { > this.beanWriter = new SAXBeanWriter(this.contentHandler); > synchronized (this.introspector) { > if (this.introspector == null) { > this.introspector = this.beanWriter.getXMLIntrospector(); > this.introspector.setLog(new LogKitLogger("betwixt")); > /* The following is needed for EJB */ > this.introspector.setClassNormalizer(new > ClassNormalizer() { > public Class normalize(Class clazz) { > if (Proxy.isProxyClass(clazz) && > clazz.getInterfaces().length > 0) { > return clazz.getInterfaces()[0]; > } > return super.normalize(clazz); > } > }); > > } else { > this.beanWriter.setXMLIntrospector(this.introspector); > } > } > beanWriter.getBindingConfiguration().setMapIDs(this.refIds); > } > > if (bean instanceof Collection) { > Iterator i = ( (Collection) bean).iterator(); > while (i.hasNext()) { > if (element == null) { > beanWriter.write(bean); > } else { > beanWriter.write(element, bean); > } > } > } else { > if (element == null) { > beanWriter.write(bean); > } else { > beanWriter.write(element, bean); > } > } > } catch (Exception e) { > getLogger().warn("Failed to marshal bean " + name, e); > } > } > > } > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] >
