Seam and Richfaces : Drag and Drop Problem

[davidetaibi]

I use sem-gem to generate a new eclipse project (seam setup, seam new-project), then I added a new action testdnd to perform drag and drop operation.
This is the code

import java.util.ArrayList;
import java.util.List;

import javax.ejb.Stateless;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.log.Log;
import org.jboss.seam.core.FacesMessages;
import org.ajax4jsf.dnd.event.DropEvent;

@Stateless
@Name("testdnd")
public class TestdndBean implements Testdnd {

 @Logger private Log log;

 @In FacesMessages facesMessages;

 public void testdnd()
 {
 //implement your business logic here
 log.info("testdnd.testdnd() action called");
 facesMessages.add("testdnd");
 }

 public void processDrop(DropEvent dropEvent) {
 System.out.println("PROCESSDROP CALLED");
 }

 public List getValori(){
 ArrayList al=new ArrayList();
 al.add("a");
 al.add("b");
 al.add("c");
 return al;
 }
 //add additional action methods

}

here the local interface

import java.util.List;
import org.ajax4jsf.dnd.event.DropEvent;
import javax.ejb.Local;

@Local
public interface Testdnd {

 //seam-gen method
 public void testdnd();

 public void processDrop(DropEvent dropEvent);

 public List getValori();
}

and here the page that use the bean

<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
 xmlns:s="http://jboss.com/products/seam/taglib"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:rich="http://richfaces.ajax4jsf.org/rich"
 xmlns:a="https://ajax4jsf.dev.java.net/ajax"
 template="layout/template.xhtml">

<ui:define name="body">

 <h:messages globalOnly="true" styleClass="message"/>

 <rich:dragIndicator id="indicator" />
 <h:form id="mapping">
 <div style="float: left; width: 60%;">
 <rich:panel id="feedColumns">
 <f:facet name="header">Your Columns</f:facet>
 <rich:dataTable value="#{testdnd.valori}" var="fm"
 styleClass="datatable" rowClasses="rowOdd,rowEven" style="width: 100%;">
 <h:column>
 <f:facet name="header">Your Column</f:facet>
 </h:column>
 <h:column>
 <f:facet name="header">Example Data(Drag me!)</f:facet>
 <a:outputPanel style="border:1px solid grey;padding:2px;"
 layout="block">
 <rich:dragSupport dragIndicator=":indicator" dragType="column"
 dragValue="#{fm}">
 <rich:dndParam name="label" value="#{fm}" />
 </rich:dragSupport>
 <span style="float: right"><strong>#{fm}</strong></span> <em>#{fm}</em>
 </a:outputPanel>
 </h:column>
 </rich:dataTable>
 </rich:panel>
 </div>
 <div>
 <rich:panel id="cdmFields">
 <f:facet name="header">
 <h:outputText value="CDM Fields" />
 </f:facet>

 <rich:dataGrid value="#{testdnd.valori}"
 var="fm" columns="2">
 <h:column>
 <a:outputPanel style="border:1px solid red;padding:2px;" layout="block">
 <rich:dropSupport acceptedTypes="column" dropValue="#{fm}"
 dropListener="#{testdnd.processDrop}" reRender="cdmFields,messages,mappedColumns,feedColumns">
 </rich:dropSupport>
 #{fm}
 </a:outputPanel>
 </h:column>
 </rich:dataGrid>
 </rich:panel>
 </div>
 </h:form>

</ui:define>

</ui:composition>

If I use the method processDrop without the DropEvent parameter all works well, but using the previous code I obtain this error :

javax.servlet.ServletException: /testdnd.xhtml @63,104 dropListener="#{testdnd.processDrop}": Method not found: TestdndBean.processDrop(org.ajax4jsf.dnd.event.DropEvent)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:152)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63)
 at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:595)
17:46:50,968 ERROR [ExceptionFilter] exception root cause
javax.faces.el.MethodNotFoundException: /testdnd.xhtml @63,104 dropListener="#{testdnd.processDrop}": Method not found: TestdndBean.processDrop(org.ajax4jsf.dnd.event.DropEvent)
 at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:71)
 at org.richfaces.component.UIDropSupport.broadcast(UIDropSupport.java:79)
 at org.ajax4jsf.ajax.repeat.UIDataAdaptor.broadcast(UIDataAdaptor.java:1056)
 at org.ajax4jsf.framework.ajax.AjaxViewRoot.processEvents(AjaxViewRoot.java:180)
 at org.ajax4jsf.framework.ajax.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:156)
 at org.ajax4jsf.framework.ajax.JsfOneOneInvoker.invokeOnRegionOrRoot(JsfOneOneInvoker.java:62)
 at org.ajax4jsf.framework.ajax.AjaxContext.invokeOnRegionOrRoot(AjaxContext.java:176)
 at org.ajax4jsf.framework.ajax.AjaxViewRoot.processDecodes(AjaxViewRoot.java:267)
 at org.apache.myfaces.lifecycle.LifecycleImpl.applyRequestValues(LifecycleImpl.java:219)
 at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:71)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63)
 at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:595)
17:46:51,078 ERROR [DebugPageHandler] redirecting to debug page
javax.faces.el.MethodNotFoundException: /testdnd.xhtml @63,104 dropListener="#{testdnd.processDrop}": Method not found: TestdndBean.processDrop(org.ajax4jsf.dnd.event.DropEvent)
 at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:71)
 at org.richfaces.component.UIDropSupport.broadcast(UIDropSupport.java:79)
 at org.ajax4jsf.ajax.repeat.UIDataAdaptor.broadcast(UIDataAdaptor.java:1056)
 at org.ajax4jsf.framework.ajax.AjaxViewRoot.processEvents(AjaxViewRoot.java:180)
 at org.ajax4jsf.framework.ajax.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:156)
 at org.ajax4jsf.framework.ajax.JsfOneOneInvoker.invokeOnRegionOrRoot(JsfOneOneInvoker.java:62)
 at org.ajax4jsf.framework.ajax.AjaxContext.invokeOnRegionOrRoot(AjaxContext.java:176)
 at org.ajax4jsf.framework.ajax.AjaxViewRoot.processDecodes(AjaxViewRoot.java:267)
 at org.apache.myfaces.lifecycle.LifecycleImpl.applyRequestValues(LifecycleImpl.java:219)
 at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:71)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63)
 at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:595)

Even if in this simple example the method processDrop don't use the DropEvent parameter I am interested to use it for some check operation.

I have used the latest version of seam from cvs (downloaded today).

Please help me!!

[stu2]

I'm also using DnD from Richfaces, and just like you started with a simple example to explore it. It's working fine for me (also latest Seam from CVS) so I'll post what I have in case it helps you out.

Here's the xhtml:

<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
 xmlns:s="http://jboss.com/products/seam/taglib"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:a="https://ajax4jsf.dev.java.net/ajax"
 xmlns:rich="http://richfaces.ajax4jsf.org/rich"
 template="/themes/#{globalPrefs.themeName}/template.xhtml">

 <ui:define name="content">
 <h1>Drag and Drop exploration</h1>

<a:outputPanel id="messages">
 <h:messages styleClass="message" />
</a:outputPanel>
 <rich:dragIndicator id="indicator" />
 <h:form id="dand">

 <h:panelGrid columnClasses="panelc" columns="4" width="100%">

 <rich:panel>
 <f:facet name="header">
 <h:outputText value="Source List!" />
 </f:facet>
 <h:dataTable id="src" columns="1" value="#{dand.genders}" var="fm">
 <h:column>
 <a:outputPanel style="border:1px solid gray;padding:2px;"
 layout="block">
 <rich:dragSupport dragIndicator=":indicator"
 dragType="gender" dragValue="#{fm}">
 <rich:dndParam name="label" value="#{fm}" />
 </rich:dragSupport>
 #{fm}
 </a:outputPanel>
 </h:column>
 </h:dataTable>
 </rich:panel>

 <rich:panel>
 <f:facet name="header">
 <h:outputText value="CDM Fields" />
 </f:facet>

 <h:dataTable id="cdmtable" columns="1"
 value="#{dand.fields}" var="fm">
 <h:column>
 <a:outputPanel style="border:1px solid gray;padding:2px;"
 layout="block">
 <rich:dropSupport acceptedTypes="gender" dropValue="#{fm}"
 dropListener="#{dand.dragged}" reRender="messages">
 </rich:dropSupport>
 #{fm}
 </a:outputPanel>
 </h:column>
 </h:dataTable>
 </rich:panel>

</h:panelGrid>
 </h:form>

 </ui:define>
</ui:composition>

Here's the SLSB:

package com.fb.core.action;

import java.util.ArrayList;
import java.util.EnumSet;
import java.util.List;

import javax.ejb.Stateless;

import org.ajax4jsf.dnd.Dropzone;
import org.ajax4jsf.dnd.event.DropEvent;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.datamodel.DataModel;
import org.jboss.seam.framework.EntityController;

import com.fb.core.model.cdm.CdmField;
import com.fb.core.model.cdm.Gender;

@Stateless
@Name("dand")
public class DandDAction extends EntityController implements DanD {

 private static final long serialVersionUID = -5492165330283497323L;

 @DataModel
 private final List<CdmField> fields;
 @DataModel
 private final List<Gender> genders;

 public DandDAction() {
 fields = new ArrayList<CdmField>();
 fields.addAll(EnumSet.allOf(CdmField.class));
 genders = new ArrayList<Gender>();
 genders.addAll(EnumSet.allOf(Gender.class));
 }

 public void dragged(DropEvent dropEvent) {
 Dropzone dropzone = (Dropzone) dropEvent.getComponent();
 addFacesMessage("Dragged #0 with dragType #1 onto dropValue #2",
 dropEvent.getDragValue(), dropEvent.getDragType(), dropzone.getDropValue());
 }

 public List<CdmField> getFields() {
 return fields;
 }

 public List<Gender> getGenders() {
 return genders;
 }

}

There wasn't really much else to it. The two lists in the SLSB just contain enums.

[davidetaibi]

Thank you for your post but I try your example (I create the two enumerations too) and I have the same error:

javax.servlet.ServletException: /test2.xhtml @52,58 dropListener="#{dand.dragged}": Method not found: DandDAction.dragged(org.ajax4jsf.dnd.event.DropEvent)

I'm using this web.xml file:

<?xml version="1.0" ?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
 version="2.4">

 <!-- Ajax4jsf (must come first!) -->

 <filter>
 <display-name>Ajax4jsf Filter</display-name>
 <filter-name>ajax4jsf</filter-name>
 <filter-class>org.ajax4jsf.Filter</filter-class>
 </filter>

 <filter-mapping>
 <filter-name>ajax4jsf</filter-name>
 <url-pattern>*.seam</url-pattern>
 </filter-mapping>

 <context-param>
 <param-name>org.ajax4jsf.VIEW_HANDLERS</param-name>
 <param-value>org.jboss.seam.ui.facelet.SeamFaceletViewHandler</param-value>
 </context-param>

 <context-param>
 <param-name>org.ajax4jsf.SKIN</param-name>
 <param-value>blueSky</param-value>
 </context-param>

 <!-- Seam -->

 <listener>
 <listener-class>org.jboss.seam.servlet.SeamListener</listener-class>
 </listener>

 <filter>
 <filter-name>Seam Filter</filter-name>
 <filter-class>org.jboss.seam.web.SeamFilter</filter-class>
 </filter>

 <filter-mapping>
 <filter-name>Seam Filter</filter-name>
 <url-pattern>/*</url-pattern>
 </filter-mapping>

 <servlet>
 <servlet-name>Seam Resource Servlet</servlet-name>
 <servlet-class>org.jboss.seam.servlet.ResourceServlet</servlet-class>
 </servlet>

 <servlet-mapping>
 <servlet-name>Seam Resource Servlet</servlet-name>
 <url-pattern>/seam/resource/*</url-pattern>
 </servlet-mapping>

 <!-- MyFaces -->

 <listener>
 <listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
 </listener>

 <!-- Facelets development mode (disable in production) -->

 <context-param>
 <param-name>facelets.DEVELOPMENT</param-name>
 <param-value>true</param-value>
 </context-param>

 <!-- JSF -->

 <context-param>
 <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
 <param-value>client</param-value>
 </context-param>

 <context-param>
 <param-name>javax.faces.DEFAULT_SUFFIX</param-name>
 <param-value>.xhtml</param-value>
 </context-param>

 <servlet>
 <servlet-name>Faces Servlet</servlet-name>
 <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
 <load-on-startup>1</load-on-startup>
 </servlet>

 <servlet-mapping>
 <servlet-name>Faces Servlet</servlet-name>
 <url-pattern>*.seam</url-pattern>
 </servlet-mapping>

 <security-constraint>
 <display-name>Restrict raw XHTML Documents</display-name>
 <web-resource-collection>
 <web-resource-name>XHTML</web-resource-name>
 <url-pattern>*.xhtml</url-pattern>
 </web-resource-collection>
 <auth-constraint>
 <role-name>NONE</role-name>
 </auth-constraint>
 </security-constraint>

</web-app>

that is automatically generated by seam-gen, and:

ajax4jsf-1.1.1-SNAPSHOT.jar
richfaces-3.0.1-SNAPSHOT.jar
myfaces-1.1.4

I don't have any idea about the problem, if you can send me your simple example also by email I appreciate very much.

[hispeedsurfer]

Hi,

have the same problem.

javax.faces.el.MethodNotFoundException: /specialreleaseeditor.xhtml @107,140 dropListener="#{requestlist.processDrop}": Method not found: RequestListBean:5c4o1y-w4tnnw-f0o94j20-1-f0opgfby-1s.processDrop(org.ajax4jsf.dnd.event.DropEvent)

@stu2
What your DanD inferface looks like?

@Stateful
@Scope(ScopeType.CONVERSATION)
@Name("requestlist")
@SuppressWarnings("unchecked")
public class RequestListBean extends AbstractChildListBean<Request, SpecialRelease> implements
 RequestList {
 public void processDrop(DropEvent dropEvent) {
 Dropzone dropzone = (Dropzone) dropEvent.getComponent();

 }

}

package de.bosch.ecp.business;

import java.util.List;

import javax.ejb.Local;

import org.ajax4jsf.dnd.event.DropEvent;
import org.ajax4jsf.dnd.event.DropListener;

import de.bosch.ecp.abstracts.AbstractChildList;
import de.bosch.ecp.model.Request;
import de.bosch.ecp.model.SpecialRelease;

@Local
public interface RequestList extends AbstractChildList<Request, SpecialRelease>{
 public void processDrop(DropEvent dropEvent);
}

If I implement DropListener in RequestlistBean problem is the same as well.

Use jboss-seam-1.2.1.GA seam-gen,
ajax4jsf-1.1.1-SNAPSHOT.jar
richfaces-3.0.1-20070414.000828-14.jar
tomahawk-1.1.5-SNAPSHOT.jar

in WEB-INF\lib folder

[hispeedsurfer]

Hi davidetaibi

Look in deploy\jbossweb-tomcat55.sar\META-INF\jboss-service.xml

set UseJBossWebLoader=true

Now it works

[ghiormar]

this also happened to me.
but when i set UseJBossWebLoader=true

but now my backing bean dosen't find the ajax4jsf.jar and richfaces.jar in my WEB-INF\lib folder, and fails to deploy.
It fails when it has to to call processDrop with org.ajax4jsf.dnd.event.DropEvent argument.
I tried to put the jars in the server/deploy/lib but now it gets

2007-04-23 16:04:21,090 WARN [org.apache.myfaces.config.FacesConfigurator] More than one managed
bean w/ the name of 'a4j' - only keeping the last
2007-04-23 16:04:21,090 WARN [org.apache.myfaces.config.FacesConfigurator] More than one managed
bean w/ the name of 'a4jSkin' - only keeping the last
2007-04-23 16:04:21,090 WARN [org.apache.myfaces.config.FacesConfigurator] More than one managed
bean w/ the name of 'ajaxContext' - only keeping the last

when i deploy the first time it works fine. but when i redeploy the time stamp on the jar in WEB-INF/lib change and if i don't copy them againg to server/deploy/lib i get:

javax.servlet.ServletException: loader constraints violated when linking org/ajax4jsf/dnd/Draggable class

my question is how can i get around this?

[davidetaibi]

Setting UseJBossWebLoader=true I solved my problem thank you very much!

[davidetaibi]

I've another problem now. When I try to use this code

public void processDrop(DropEvent dropEvent) {
 Dropzone dropzone = (Dropzone) dropEvent.getComponent();
 moveItem(dropEvent.getDragValue(), dropzone.getDropValue());

 }

private void moveItem(Object dragValue, Object dropValue) {
 System.out.println("DROP VALUE:"+dropValue.toString());

 System.out.println("DRAG VALUE:"+dragValue.toString());
 }

If I use only the second system.out all work fine, but when I use also the first I obtain the following exception:

javax.servlet.ServletException: loader constraints violated when linking org/ajax4jsf/dnd/Draggable class
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:152)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63)
 at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)

I cannot access the dropValue object, this is very important for me because I have to compare the drag object with the drop object in the drop zone.

[ghiormar]

Is you're drop zone the same as the drag zone?
I was getting the same error when i didn't set the types right. you should drop then to a diffrent container in this case.

[a.moreno.jimenez]

Hi all,

I had the same loader constraints violated when linking org/ajax4jsf/dnd/Draggable after setting the JBoss Loader. It seems to me that there was some kind of mix-up between my library jars in the war WEB-INF/lib and the ones in the server lib directory (I know, I shouldn't do such things).

Everything was solved for me when I moved all jars to the EAR directory, and added the modules/java entries to the application.xml file.

btw, richfaces rocks!!! :)