[seam-issues] [JBoss JIRA] Created: (JBSEAM-4631) NPE s:validateEquality with readonly fields

Ignacio Larranaga (JIRA) jira-events at lists.jboss.org
Sat Apr 10 13:00:37 EDT 2010 

NPE s:validateEquality with readonly fields
-------------------------------------------

                 Key: JBSEAM-4631
                 URL: https://jira.jboss.org/jira/browse/JBSEAM-4631
             Project: Seam
          Issue Type: Bug
          Components: Framework
    Affects Versions: 2.2.0.GA
            Reporter: Ignacio Larranaga


This is the sample code:

<a4j:region>
	<s:decorate id="creditValueFieldId" template="/layout/edit.xhtml">
		<ui:define name="label"><h:outputText value="#{messages['UserMovement.credit']}"/></ui:define>
		<h:inputText id="creditValueId" required="true" value="#{userMovement.credit}" readonly="true" />
	</s:decorate>
	<s:decorate id="valueFieldId" template="/layout/edit.xhtml">
		<ui:define name="label"><h:outputText value="#{messages['UserMovement.value']}"/></ui:define>
		<h:inputText id="valueId" required="true" value="#{userMovement.value}">
			<s:validateEquality for="creditValueId" operator="less_or_equal" message="#{messages['Withdraw.not_enough_credit']}" />
			<a4j:support event="onchange" eventsQueue="default" reRender="valueFieldId,withdrawId"/>
		</h:inputText>
		<ui:param name="description" value="#{messages['Withdraw.value_must_be_le_credit']}" />
	</s:decorate>
</a4j:region>

When I change the value (onchange event on creditValueId) I get this exception:

13:47:30,218 ERROR [Exceptions] handled and logged exception
javax.servlet.ServletException: java.lang.IllegalArgumentException: Values are not comparable
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
	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$FilterChainImpl.doFilter(SeamFilter.java:83)
	at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
	at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
	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$FilterChainImpl.doFilter(SeamFilter.java:69)
	at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
	at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
	at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
	at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
	at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
	at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Unknown Source)
Caused by: javax.faces.FacesException: java.lang.IllegalArgumentException: Values are not comparable
	at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:714)
	at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675)
	at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:720)
	at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675)
	at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:720)
	at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675)
	at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:720)
	at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675)
	at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:226)
	at org.ajax4jsf.component.AjaxViewRoot.processValidators(AjaxViewRoot.java:463)
	at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
	... 41 more
Caused by: java.lang.IllegalArgumentException: Values are not comparable
	at org.jboss.seam.ui.validator.EqualityValidator.compare(EqualityValidator.java:202)
	at org.jboss.seam.ui.validator.EqualityValidator.validate(EqualityValidator.java:141)
	at org.richfaces.component.UIRichInput.validateInput(UIRichInput.java:44)
	at org.richfaces.component.html.HtmlInputText.validateValue(HtmlInputText.java:46)
	at javax.faces.component.UIInput.validate(UIInput.java:875)
	at javax.faces.component.UIInput.executeValidate(UIInput.java:1072)
	at javax.faces.component.UIInput.processValidators(UIInput.java:672)
	at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1058)
	at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1058)
	at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1058)
	at org.ajax4jsf.component.UIAjaxRegion.processValidators(UIAjaxRegion.java:121)
	at org.ajax4jsf.component.AjaxViewRoot$3.invokeContextCallback(AjaxViewRoot.java:447)
	at org.ajax4jsf.component.ContextCallbackWrapper.invokeContextCallback(ContextCallbackWrapper.java:44)
	at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:711)
	... 54 more
Caused by: java.lang.NullPointerException
	at java.lang.Double.compareTo(Unknown Source)
	at java.lang.Double.compareTo(Unknown Source)
	at org.jboss.seam.ui.validator.EqualityValidator.compare(EqualityValidator.java:198)
	... 67 more

The courious thing is that when I remove the readonly mark in the first field (creditValueFieldId) the exception dissapears :). That is:

<h:inputText id="creditValueId" required="true" value="#{userMovement.credit}" />

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