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From "Wes Wannemacher" <w...@wantii.com>
Subject Re: [S2] s:if test attribute not a runtime expression?
Date Wed, 10 Oct 2007 18:50:03 GMT
%{rules != null && rules.size() > 0}

(I didn't test it, I'm just guessing)

-W

On 10/10/07, Jake Robb <jrobb@sircon.com> wrote:
> Pardon me for being totally new to OGNL, but what would be the
> equivalent of ${not empty rules}?
>
> -----Original Message-----
> From: Wes Wannemacher [mailto:wesw@wantii.com]
> Sent: Wednesday, October 10, 2007 2:44 PM
> To: Struts Users Mailing List
> Subject: Re: [S2] s:if test attribute not a runtime expression?
>
> I noticed something broken in showcase on trunk once and brought it up -
>
> https://issues.apache.org/struts/browse/WW-2206
>
> In discussion, I realized that the dev team is moving away from other
> expression languages in favor of OGNL only (or whatever is plugged-in
> in struts 2.1.x).
>
> -W
>
> On 10/10/07, Jake Robb <jrobb@sircon.com> wrote:
> > Okay, this might be a question for the dev list, but bear with me for
> a
> > minute.
> >
> > My application is currently using Struts 2.0.8.  I read about some
> > security and bug fixes in 2.0.9 and 2.0.10.  According to the Struts
> > JIRA server, 2.0.10 has been complete since September 9th, so I
> figured
> > I'd wait for that to get promoted to GA rather than upgrading to 2.0.9
> > and then to 2.0.10 shortly thereafter.  I then noticed that 2.0.11 is
> > also complete in JIRA, and has been since September 21st.
> >
> > My application is in early development, so I can afford to be an early
> > adopter.  To that end, I just downloaded Struts 2.0.11 from here:
> > http://people.apache.org/builds/struts/2.0.11/
> >
> > I upgraded the JAR files in my application and rebuilt.  A quick
> sanity
> > check revealed a JSP compile error:
> >
> > ConfigureRules.jsp:9:7: Static attribute must be a String literal, its
> > illegal to specify an expression.
> > <s:if test="${not empty rules}">
> >       ^--^
> >
> > I dug around for a minute and found something weird.  The following is
> > an excerpt from struts-tags.tld, which is in struts2-core-2.0.11.jar:
> >
> >   <tag>
> >     <name>if</name>
> >     <tag-class>org.apache.struts2.views.jsp.IfTag</tag-class>
> >     <body-content>JSP</body-content>
> >     <description><![CDATA[If tag]]></description>
> >     <attribute>
> >       <name>id</name>
> >       <required>false</required>
> >       <rtexprvalue>false</rtexprvalue>
> >       <description><![CDATA[id for referencing element. For UI and
> form
> > tags it will be used as HTML id attribute]]></description>
> >     </attribute>
> >     <attribute>
> >       <name>test</name>
> >       <required>true</required>
> >       <rtexprvalue>false</rtexprvalue>
> >       <description><![CDATA[Expression to determine if body of tag is
> to
> > be displayed]]></description>
> >     </attribute>
> >   </tag>
> >
> > As you can see, the attribute "test" is configured not to allow
> runtime
> > expressions.  I went back and checked in 2.0.8, and rtexprvalue was
> true
> > in that version.  I downloaded 2.0.9, and it was true there too.  I
> > haven't downloaded 2.0.10.
> >
> > So, here's my question:
> >
> > Is that a deliberate change?  If so, why, and what is the new way to
> > accomplish what I was doing before?
> >
> > And a side question: once a version is "complete" in JIRA, what else
> has
> > to happen before that version becomes GA?
> >
> > Thanks,
> > Jake Robb
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: user-unsubscribe@struts.apache.org
> > For additional commands, e-mail: user-help@struts.apache.org
> >
> >
>
>
> --
> Wesley Wannemacher
> President, Head Engineer/Consultant
> WanTii, Inc.
> http://www.wantii.com
>
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>
>
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>


-- 
Wesley Wannemacher
President, Head Engineer/Consultant
WanTii, Inc.
http://www.wantii.com

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