a4j:commandButton - Error in conversion Java Object to JavaS
kosmos Jun 25, 2008 7:58 AMI have button on my form:
<a4j:commandButton actionListener="#{processDataChangeFioV01.addParagraph}" value="Add Paragraph" reRender="masterFormId:paragraphs"> <f:param name="destination" value="#{document.content.body}"/> </a4j:commandButton>
During rendering page with this button, i'm getting exception:
javax.faces.FacesException: Error in conversion Java Object to JavaScript at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:133) at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:98) at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:98) at org.ajax4jsf.javascript.JSFunction.appendScript(JSFunction.java:84) at org.ajax4jsf.renderkit.AjaxRendererUtils.buildOnEvent(AjaxRendererUtils.java:183) at org.ajax4jsf.renderkit.AjaxRendererUtils.buildOnClick(AjaxRendererUtils.java:140) at org.ajax4jsf.renderkit.AjaxCommandRendererBase.getOnClick(AjaxCommandRendererBase.java:63) at org.ajax4jsf.renderkit.html.CommandButtonRenderer.doEncodeEnd(CommandButtonRenderer.java:114) at org.ajax4jsf.renderkit.html.CommandButtonRenderer.doEncodeEnd(CommandButtonRenderer.java:161) at org.ajax4jsf.renderkit.RendererBase.encodeEnd(RendererBase.java:135) at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:836) at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:286) at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262) at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:199) at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:194) at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:121) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886) at javax.faces.render.Renderer.encodeChildren(Renderer.java:137) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:892) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592) at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108) at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106) at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281) at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:437) at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:366) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446) at java.lang.Thread.run(Thread.java:619) Caused by: javax.faces.FacesException: Error in conversion Java Object to JavaScript at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:133) at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:128) ... 65 more Caused by: java.lang.NoSuchMethodException: Property 'embedable' has no getter method at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1127) at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:686) at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715) at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:290) at org.ajax4jsf.javascript.ScriptUtils.toScript(ScriptUtils.java:128) ... 66 more
As I understand the problem with serializing my #{document.content.body} object to JavaScript.
java.lang.NoSuchMethodException: Property 'embedable' has no getter method
this points that serializer cann't invoke getEmbedable() method for Body object, but this property is Boolean, so it has isEmbedable() method instead of getEmbedable().
So, I think the problem in A4J core: it cann't serialize is-methods.
P.S. If I change <a4j:commandButton/> to <h:commandButton/>
or passing List object as parameter, exception doesn't occure