Anyway, enough rant, thanks for the info.
From: Paul McCulloch <[EMAIL PROTECTED]> Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]> To: 'Struts Users Mailing List' <[EMAIL PROTECTED]> Subject: RE: [OT(?)] Comparing against a typesafe enum in JSTL Date: Thu, 26 Aug 2004 13:54:27 +0100
I've asked this before on the list and didn't get a neat answer. I've resorted to using c:set & scriptlets to extract the value from the static and store it in a scoped attribute for use with JSTL.
Paul
> -----Original Message----- > From: Janne Mattila [mailto:[EMAIL PROTECTED] > Sent: Thursday, August 26, 2004 1:42 PM > To: [EMAIL PROTECTED] > Subject: Re: [OT(?)] Comparing against a typesafe enum in JSTL > > > Um, no, doesn't work: > > [ServletException in:/pages/cd/content/common/menu.jsp] > jsp.error.tlv.invalid.page > > 10: tag = 'when' / attribute = 'test': An error occurred > while parsing > custom action attribute "test" with value > "${sessionScope.role.roleChar.equals(cd.business.Role.ADMIN)}" > : Encountered > "(", expected one of ["}", ".", ">", "gt", "<", "lt", "==", > "eq", "<=", > "le", ">=", "ge", "!=", "ne", "[", "+", "-", "*", "/", "div", > "%", "mod", > "and", "&&", "or", "||"] > > besides, wouldn't that be comparing a char (besides, calling > char's equals() > method, which does not exist sice char is a primitive) to a Role? > > Anyway, thanks for the suggestion, other ideas? > > > >From: Can Zheng <[EMAIL PROTECTED]> > >Reply-To: Can Zheng <[EMAIL PROTECTED]> > >To: Struts Users Mailing List <[EMAIL PROTECTED]> > >Subject: Re: [OT(?)] Comparing against a typesafe enum in JSTL > >Date: Thu, 26 Aug 2004 20:32:27 +0800 > > > >Hi, > >you can use > > > ><c:when > >test="${sessionScope.role.roleChar.equals(cd.business.Role.ADMIN)}"> > >... > > > > > > > > > >On Thu, 26 Aug 2004 12:09:56 +0000, Janne Mattila > ><[EMAIL PROTECTED]> wrote: > > > First, apologies for a slightly OT question; this is more > about JSTL and > > > less about Struts. > > > > > > Let's say I have a "Role" object in session. It is a > typesafe enum, with > > > values Role.ADMIN and Role.USER. How can I compare the > object in session > > > against those values, using JSTL? I can't figure out how > to refer to > > > typesafe enum objects using the JSTL notation. And I > don't really want > >to > > > change the enum class into a JavaBean. > > > > > > Role: > > > > > > public class Role { > > > private char roleChar; > > > > > > public static final Role USER = new Role('u'); > > > public static final Role ADMIN = new Role('a'); > > > > > > private Role(char roleChar) { > > > this.roleChar = roleChar; > > > } > > > > > > char getRoleChar() { > > > return roleChar; > > > } > > > > > > public boolean equals(Object obj) { > > > Role r2 = (Role) obj; > > > if (r2 == null) { > > > return false; > > > } > > > return r2.getRoleChar() == roleChar; > > > } > > > } > > > > > > My attempt to use it in JSP page: > > > > > > <c:choose> > > > <c:when test="${sessionScope.role == cd.business.Role.ADMIN}"> > > > Hello Admin > > > </c:when> > > > <c:otherwise> > > > Hello User > > > </c:otherwise> > > > </c:choose> > > > > > > does not work. > > > > > > (this special case could possibly be handled using > container managed > > > authorization and it's roles etc....but it's not really > the point here) > > > > > > _________________________________________________________________ > > > MSN 8 with e-mail virus protection service: 2 months FREE* > > > http://join.msn.com/?page=features/virus > > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > >-- > >Best regards, > > > >Can Zheng > > > >--------------------------------------------------------------------- > >To unsubscribe, e-mail: [EMAIL PROTECTED] > >For additional commands, e-mail: [EMAIL PROTECTED] > > > > _________________________________________________________________ > Help STOP SPAM with the new MSN 8 and get 2 months FREE* > http://join.msn.com/?page=features/junkmail > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] >
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