trouble using convertnumber

[ajanz]

i use richfaces 3.3.0 GA , Jboss 4.2.2 GA and SEAM 2.0.2

i bound an inputtext on a Double in my bean

simple code is

Double d1;
 public Double getD1() {
 return d1;
 }

 public void setD1(Double d1) {
 this.d1 = d1;
 }

<h:inputText value="#{TestBean.d1}" >

but if i add a convertnumber like

<h:inputText value="#{TestBean.d1}" >
<f:convertNumber type="number" maxFractionDigits="2" minFractionDigits="2" groupingUsed="true" />
 </h:inputText>

i got following error . any ideas to solve that?

SCHWERWIEGEND: /test/test1.xhtml @21,39 value="#{TestBean.d1}": java.lang.Illega
lArgumentException: argument type mismatch
java.lang.IllegalArgumentException: argument type mismatch
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at javax.el.BeanELResolver.setValue(BeanELResolver.java:108)
 at javax.el.CompositeELResolver.setValue(CompositeELResolver.java:68)
 at com.sun.faces.el.FacesCompositeELResolver.setValue(FacesCompositeELRe
solver.java:100)
 at org.jboss.el.parser.AstPropertySuffix.setValue(AstPropertySuffix.java
:73)
 at org.jboss.el.parser.AstValue.setValue(AstValue.java:84)
 at org.jboss.el.ValueExpressionImpl.setValue(ValueExpressionImpl.java:24
9)
 at com.sun.facelets.el.TagValueExpression.setValue(TagValueExpression.ja
va:93)
 at javax.faces.component.UIInput.updateModel(UIInput.java:771)
 at javax.faces.component.UIInput.processUpdates(UIInput.java:703)
 at javax.faces.component.UIComponentBase.processUpdates(UIComponentBase.
java:1081)
 at javax.faces.component.UIComponentBase.processUpdates(UIComponentBase.
java:1081)
 at org.ajax4jsf.component.UIAjaxForm.processUpdates(UIAjaxForm.java:98)
 at org.ajax4jsf.component.AjaxViewRoot$2.invokeContextCallback(AjaxViewR
oot.java:416)
 at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:23
8)
 at org.ajax4jsf.component.AjaxViewRoot.processUpdates(AjaxViewRoot.java:
432)
 at com.sun.faces.lifecycle.UpdateModelValuesPhase.execute(UpdateModelVal
uesPhase.java:78)
 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)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.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:178)

 at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
 at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFil
ter.java:390)
 at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:517)
 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.servlet.SeamFilter.doFilter(SeamFilter.java:158)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFi
lter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:230)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:175)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(Securit
yAssociationValve.java:179)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authentica
torBase.java:432)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValv
e.java:84)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:102)
 at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedC
onnectionValve.java:157)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:262)
 at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcesso
r.java:856)
 at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.pr
ocess(Http11AprProtocol.java:566)
 at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:15
08)
 at java.lang.Thread.run(Thread.java:595)

[ilya_shaikovsky]

not related to RF.. but anyway.. you defined minFractionDigits = 2. So while you will enter for example "312" - there will be exception and validation error. But after you enter "321.00" all will works fine.

I've removed this attribute and any numbers started to be updated correctly. For more information visit JSF resources.

[ajanz]

sorry for that. but i already asked in sun's jsf forum. the answer there was that my code is right and it might be some trouble with jboss el....

after struggling with that problem for days i now got finally my answer....

1. According to JSF specification, if you use f:convertNumber, the type of the result depends on the input: if the user enters 0 you will get a Long, if he enters 0.1 you'll get a Double, no matter what you have on your bean. So the correct way to work with f:convertNumber (no matter what other attributes you use, like pattern, or so) is to use a Number on the backing bean, not Integer, or int, or float, or Float, or Double or anything like that.
2. If you use f:convert id="javax.faces.Double" or the converter attribute in the input controls you will always get a Double, but then you cannot specify any formatting.