Seems that it does not matter what the expression is?
For me it occurs when I test for year > someConstant
and whenever the year is not present I get this error.
Year is of type Integer and validator is written like this:
<field name="year">
<field-validator type="fieldexpression">
<param name="expression">year > 1950</param>
<message>year is ${year}?</message>
</field-validator>
</field>
> What's the expression you're applying to the field? I'll see if I can
> figure out what the issue is...
>
> > -----Original Message-----
> > From: Taavi Tiirik [mailto:[EMAIL PROTECTED]
> > Sent: Sunday, November 23, 2003 12:08 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: [OS-webwork] validator for the optional int field
> >
> >
> >
> > > This is the problem of empty form fields causing type
> > conversion field
> > > errors that I fixed last night... Try the latest
> >
> > Excellent. Thanks!
> >
> > Now there is still this null pointer exception that happens
> > if I use validator of type fieldexpression and if the field
> > is left blank i.e. when I call validationtest.action?year=
> >
> > java.lang.NullPointerException
> > at ognl.OgnlOps.doubleValue(OgnlOps.java:97)
> > at ognl.OgnlOps.greater(OgnlOps.java:395)
> > at ognl.ASTGreater.getValueBody(ASTGreater.java:51)
> > at ognl.SimpleNode.getValue(SimpleNode.java:167)
> > at ognl.Ognl.getValue(Ognl.java:335)
> > at ognl.Ognl.getValue(Ognl.java:310)
> > at
> > com.opensymphony.xwork.util.OgnlValueStack.findValue(OgnlValue
> > Stack.java:92)
> > at
> > com.opensymphony.xwork.validator.validators.ValidatorSupport.g
> > etFieldValue(V
> > alidatorSupport.java:90)
> > at
> > com.opensymphony.xwork.validator.validators.FieldExpressionVal
> > idator.validat
> > e(FieldExpressionValidator.java:37)
> > at
> > com.opensymphony.xwork.validator.ActionValidatorManager.valida
> > te(ActionValid
> > atorManager.java:69)
> > at
> > com.opensymphony.xwork.validator.ActionValidatorManager.valida
> > te(ActionValid
> > atorManager.java:55)
> > at
> > com.opensymphony.xwork.validator.ValidationInterceptor.before(
> > ValidationInte
> > rceptor.java:36)
> > at
> > com.opensymphony.xwork.interceptor.AroundInterceptor.intercept
> > (AroundInterce
> > ptor.java:36)
> > at
> > com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultA
> > ctionInvocatio
> > n.java:169)
> > at
> > com.opensymphony.xwork.interceptor.AroundInterceptor.intercept
> > (AroundInterce
> > ptor.java:37)
> > at
> > com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultA
> > ctionInvocatio
> > n.java:169)
> > at
> > com.opensymphony.xwork.interceptor.AroundInterceptor.intercept
> > (AroundInterce
> > ptor.java:37)
> > at
> > com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultA
> > ctionInvocatio
> > n.java:169)
> > at
> > com.opensymphony.xwork.interceptor.AroundInterceptor.intercept
> > (AroundInterce
> > ptor.java:37)
> > at
> > com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultA
> > ctionInvocatio
> > n.java:169)
> > at
> > com.opensymphony.xwork.interceptor.TimerInterceptor.intercept(
> > TimerIntercept
> > or.java:62)
> > at
> > com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultA
> > ctionInvocatio
> > n.java:169)
> > at
> > com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActio
> > nProxy.java:11
> > 6)
> > at
> > com.opensymphony.webwork.dispatcher.ServletDispatcher.serviceA
> > ction(ServletD
> > ispatcher.java:182)
> > at
> > com.opensymphony.webwork.dispatcher.ServletDispatcher.service(
> > ServletDispatc
> > her.java:162)
> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> > at
> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilt
> > er(Application
> > FilterChain.java:247)
> > at
> > org.apache.catalina.core.ApplicationFilterChain.doFilter(Appli
> > cationFilterCh
> > ain.java:193)
> > at
> > com.opensymphony.webwork.lifecycle.RequestLifecycleFilter.doFi
> > lter(RequestLi
> > fecycleFilter.java:62)
> > at
> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilt
> > er(Application
> > FilterChain.java:213)
> > at
> > org.apache.catalina.core.ApplicationFilterChain.doFilter(Appli
> > cationFilterCh
> > ain.java:193)
> > at
> > cmw.filter.SetCharacterEncoding.doFilter(SetCharacterEncoding.
> > java:169)
> > at
> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilt
> > er(Application
> > FilterChain.java:213)
> > at
> > org.apache.catalina.core.ApplicationFilterChain.doFilter(Appli
> > cationFilterCh
> > ain.java:193)
> > at cmw.filter.Persistence.doFilter(Persistence.java:70)
> > at
> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilt
> > er(Application
> > FilterChain.java:213)
> > at
> > org.apache.catalina.core.ApplicationFilterChain.doFilter(Appli
> > cationFilterCh
> > ain.java:193)
> > at
> > org.apache.catalina.core.StandardWrapperValve.invoke(StandardW
> > rapperValve.ja
> > va:256)
> > at
> > org.apache.catalina.core.StandardPipeline$StandardPipelineValv
> > eContext.invok
> > eNext(StandardPipeline.java:643)
> > at
> > org.apache.catalina.core.StandardPipeline.invoke(StandardPipel
> > ine.java:480)
> > at
> > org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
> > at
> > org.apache.catalina.core.StandardContextValve.invoke(StandardC
> > ontextValve.ja
> > va:191)
> > at
> > org.apache.catalina.core.StandardPipeline$StandardPipelineValv
> > eContext.invok
> > eNext(StandardPipeline.java:643)
> > at
> > org.apache.catalina.core.StandardPipeline.invoke(StandardPipel
> > ine.java:480)
> > at
> > org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
> > at
> > org.apache.catalina.core.StandardContext.invoke(StandardContex
> > t.java:2416)
> > at
> > org.apache.catalina.core.StandardHostValve.invoke(StandardHost
> > Valve.java:180
> > )
> > at
> > org.apache.catalina.core.StandardPipeline$StandardPipelineValv
> > eContext.invok
> > eNext(StandardPipeline.java:643)
> > at
> > org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDi
> > spatcherValve.
> > java:171)
> > at
> > org.apache.catalina.core.StandardPipeline$StandardPipelineValv
> > eContext.invok
> > eNext(StandardPipeline.java:641)
> > at
> > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReport
> > Valve.java:172
> > )
> > at
> > org.apache.catalina.core.StandardPipeline$StandardPipelineValv
> > eContext.invok
> > eNext(StandardPipeline.java:641)
> > at
> > org.apache.catalina.core.StandardPipeline.invoke(StandardPipel
> > ine.java:480)
> > at
> > org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
> > at
> > org.apache.catalina.core.StandardEngineValve.invoke(StandardEn
> > gineValve.java
> > :174)
> > at
> > org.apache.catalina.core.StandardPipeline$StandardPipelineValv
> > eContext.invok
> > eNext(StandardPipeline.java:643)
> > at
> > org.apache.catalina.core.StandardPipeline.invoke(StandardPipel
> > ine.java:480)
> > at
> > org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
> > at
> > org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.
> > java:223)
> > at
> > org.apache.coyote.http11.Http11Processor.process(Http11Process
> > or.java:601)
> > at
> > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandle
> > r.processConne
> > ction(Http11Protocol.java:392)
> > at
> > org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoi
> > nt.java:565)
> > at
> > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(
> > ThreadPool.jav
> > a:619)
> > at java.lang.Thread.run(Thread.java:536)
> >
> >
> >
> >
> > >
> > > > -----Original Message-----
> > > > From: Taavi Tiirik [mailto:[EMAIL PROTECTED]
> > > > Sent: Sunday, November 23, 2003 10:15 AM
> > > > To: [EMAIL PROTECTED]
> > > > Subject: Re: [OS-webwork] validator for the optional int field
> > > >
> > > >
> > > >
> > > > I am using Integer instead of int now but whenever
> > > > the input field is left blank I am still getting this
> > Invalid field
> > > > value for field "year" message.
> > > >
> > > > So my results so far are like this:
> > > >
> > > > these behave as expected:
> > > > validationtest.action
> > > > validationtest.action?year=12312313
> > > >
> > > > this gives "Invalid field value for field "year" message:
> > > > validationtest.action?year=
> > > >
> > > > I feel that it should not give that error. Removing
> > > > "year=" from url is not an option because this kind
> > > > of url is what we get if there is an input form field
> > > > that is left blank.
> > > >
> > > > So, what to you think what should be the ww2 way
> > > > of validating this kind of field?
> > > >
> > > > best wishes,
> > > > Taavi
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Jason Carreira" <[EMAIL PROTECTED]>
> > > > To: <[EMAIL PROTECTED]>
> > > > Sent: Sunday, November 23, 2003 4:15 PM
> > > > Subject: RE: [OS-webwork] validator for the optional int field
> > > >
> > > >
> > > > > Did you try the IntRangeFieldValidator? It doesn't require
> > > > a value...
> > > > > Actually, if you have a primitive int, it will always get a
> > > > value and
> > > > > validate it... If it's an Integer you can have a null
> > > > value, in which
> > > > > case it would ignore it.
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: Taavi Tiirik [mailto:[EMAIL PROTECTED]
> > > > > > Sent: Sunday, November 23, 2003 8:48 AM
> > > > > > To: [EMAIL PROTECTED]
> > > > > > Subject: Re: [OS-webwork] validator for the optional int field
> > > > > >
> > > > > >
> > > > > > Sorry for not being clear ")
> > > > > >
> > > > > > I would like to specify field error message, if the field is
> > > > > > filled with a value but this value is outside of some
> > > > min-max range.
> > > > > >
> > > > > > And I would like to see this field pass this
> > valiation rule if
> > > > > > the field is left empty.
> > > > > >
> > > > > > So something like this comes to my mind:
> > > > > >
> > > > > > <field name="year">
> > > > > > <field-validator type="optional-int">
> > > > > > <param name="min">6</param>
> > > > > > <param name="max">10</param>
> > > > > > <message>bar must be between ${min} and ${max},
> > current value
> > > > > > is ${bar}.</message>
> > > > > > </field-validator>
> > > > > > </field>
> > > > > >
> > > > > >
> > > > > > > What do you want to validate about that field?
> > > > > > >
> > > > > > > > -----Original Message-----
> > > > > > > > From: Taavi Tiirik [mailto:[EMAIL PROTECTED]
> > > > > > > > Sent: Sunday, November 23, 2003 8:04 AM
> > > > > > > > To: [EMAIL PROTECTED]
> > > > > > > > Subject: [OS-webwork] validator for the optional int field
> > > > > > > >
> > > > > > > >
> > > > > > > > How should I write a validator for the optional
> > int field in
> > > > > > > > ww2?
> > > > > > > >
> > > > > > > > I have getter and setter in my action:
> > > > > > > > public int getYear(){ return year; }
> > > > > > > > public void setYear( int year ){ this.year = year; }
> > > > > > > >
> > > > > > > > input field is defined like this:
> > > > > > > > #tag( TextField "label='year'" "name='year'" "value=year"
> > > > > > "size='5'"
> > > > > > > > )
> > > > > > > >
> > > > > > > > What should I put into action-validation.xml?
> > > > > > > >
> > > > > > > > Taavi
> > > > > > > >
> > > > > > > >
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