5 Replies Latest reply on Jul 13, 2007 10:35 AM by pmuir

drag and drop problems with parameters

leeovan Jul 11, 2007 4:53 PM

hello ive been trying to get the drag and drop working for a while now and have run into a few problems.

I have created a bean based on the one i found in the rich faces source


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

import org.jboss.seam.annotations.Name;

@Name("dndBean")
public class DragAndDropBean {


 private List<String> types = new ArrayList<String>();

 private Object dragValue;

 private Object testParam;

 private List<String> container = new ArrayList<String>();

 private List<String> sourceList = new ArrayList<String>();



 public DragAndDropBean() {
 super();

 types.add("PHP");
 types.add("JAVA");


 sourceList.add("item1");
 sourceList.add("item2");
 }

 public void processDrop(org.ajax4jsf.dnd.event.DropEvent event) {
 System.out.println("Bean.processDrop()");
 this.dragValue = event.getDragValue();
 }

 public void processDrag(org.ajax4jsf.dnd.event.DragEvent dragEvent) {
 System.out.println("Bean.processDrag()");
 }

 public List getTypes() {
 return types;
 }

 public String dragAction() {
 System.out.println("Bean.dragAction()");
 return null;
 }

 public String dropAction() {
 System.out.println("Bean.dropAction()");
 return null;
 }

 public Object getDragValue() {
 return dragValue;
 }

 public Object getTestParam() {
 return testParam;
 }

 public void setTestParam(Object testParam) {
 this.testParam = testParam;
 System.out.println("Bean.setTestParam()" + testParam);
 }

 public List<String> getContainer() {
 return container;
 }

 public void setContainer(List<String> container) {
 this.container = container;
 System.out.println("Bean.setContainer()" + container);
 }

 public List<String> getSourceList() {
 return sourceList;
 }

 public void setSourceList(List<String> sourceList) {
 this.sourceList = sourceList;
 System.out.println("Bean.setSourceList()" + sourceList);
 }

 public void reset(){
 System.out.println("RESET");
 }
}

and this is the front


<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"
 id="testComponent"
 styleClass="edit">

 <rich:dragIndicator id="indicator"></rich:dragIndicator>

<h:form id="form">

 <h:panelGrid columnClasses="panelc" columns="2" width="50%">

 <rich:panel style="width:100px">
 <f:facet name="header">
 <h:outputText value="Source List" />
 </f:facet>

 <h:dataTable id="src" columns="1" value="#{dndBean.sourceList}"
 var="source" >

 <h:column>
 <a:outputPanel style="border:1px solid gray;padding:2px;"
 layout="block">


 <rich:dragSupport dragType="employee"
 dragValue="#{source}"


 >

 <rich:dndParam name="label" value="#{source}" />

 </rich:dragSupport>



 <h:outputText value="#{source}"></h:outputText>
 </a:outputPanel>
 </h:column>

 </h:dataTable>


 </rich:panel>

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

 <rich:dropSupport id="php"
 reRender="src, php, destinationtable"
 acceptedTypes="employee"
 dropValue="employee"
 dropListener="#{dndBean.processDrop}"
 >
 </rich:dropSupport>
 <h:dataTable id="destinationtable" columns="1" value="#{dndBean.container}" var="destination">
 <h:column>
 <h:outputText value="#{destination}"></h:outputText>
 </h:column>
 </h:dataTable>


 </rich:panel>
 </h:panelGrid>
 <a:commandButton action="#{dndBean.reset}" value="Start Over"
 reRender="src,destinationtable" />
</h:form>

 </ui:composition>

now here comes the problem. i cant seem to find the method i call on the dropListener="#{dndBean.processDrop} section.. if i change this to dropListener="#{dndBean.dropAction} i get the correct output.. here is the actual stack trace. looks like its a problem with passing parameters..


21:36:45,421 ERROR [ExceptionFilter] uncaught exception
javax.servlet.ServletException: /DragAndDropComponent.xhtml @62,20 dropListener="#{dndBean.processDrop}": Method not found: uk.co.anotion.entity.jobs.DragAndDropBean@183fc68.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$FilterChainImpl.doFilter(SeamFilter.java:63)
 at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 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.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(Unknown Source)
21:36:45,421 ERROR [ExceptionFilter] exception root cause
javax.faces.el.MethodNotFoundException: /DragAndDropComponent.xhtml @62,20 dropListener="#{dndBean.processDrop}": Method not found: uk.co.anotion.entity.jobs.DragAndDropBean@183fc68.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.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$FilterChainImpl.doFilter(SeamFilter.java:63)
 at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
 at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
 at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60)
 at org.jboss.seam.web.SeamFilter$FilterChai

cheers

1. Re: drag and drop problems with parameters

leeovan Jul 12, 2007 3:29 AM (in response to leeovan)

any suggestions or simply point me to some info would be appreciated. I could do with a simple example of accessing backing bean methods with parameters.

thank you
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2. Re: drag and drop problems with parameters

damianharvey Jul 12, 2007 3:41 AM (in response to leeovan)
In the file {jboss_server_dir}/deploy/jboss-web.deployer/META-INF/jboss-service.xml you must set:
<attribute name="UseJBossWebLoader">true</attribute>
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3. Re: drag and drop problems with parameters

leeovan Jul 12, 2007 4:11 AM (in response to leeovan)

ok ill give this a try.. is there some documentation explaining this because i never read anything about needing to set it. anyway ill report back if all goes well

thank you
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4. Re: drag and drop problems with parameters

leeovan Jul 13, 2007 5:03 AM (in response to leeovan)

yes this works now.. i find it quite strange that this is not on by default or are there better strategies for getting my user data from the screen.
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5. Re: drag and drop problems with parameters

pmuir Jul 13, 2007 10:35 AM (in response to leeovan)

Richfaces/Ajax4jsf is in the middle of a refactor which will fix this properly without using UseJBossWebLoader (split out an api jar).
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