Re: Strange Problem with logic:equals!
On 10/7/05, starki78 [EMAIL PROTECTED] wrote: Hi, we have a strange Problem with logic:equal Look at the following code: //-- first we create a bean bean:define id=myBeanValue value=1/ //-- changing the value is this possible in the way??? % myBeanValue = 2; % change this to % pageContext.setAttribute(myBeanValue,2); the point is, that bean:define puts the defined object in the page scope AND ties a scripting variable to it. Your % ... % line changes the value of the scripting variable but not the value of the object in the pageContext (page scope). The logic:equal tag (and all other tags) looks in the 4 scopes for the beans, starting with the page scope, and finds your initially defined value. Hence the output is correct. Actually % myBeanValue = 2; % is incorrect usage, if you use tags, you don't script. // tests with the logic:equals tags logic:equal name=myBeanValue value=1 bris equal/br /logic:equal logic:notEqual name=myBeanValue value=1 bris notequal/br /logic:notEqual After running the jsp we are getting the result= is equal!!! But Why?? Is it not possible to redefine the variable in the way that we try this in the example! no, it isn't possible, see above. What makes us even more worried is that when we debug, it neither jumps in the first nor in the second logic:equal tag. Heh? You have the output is equal in your jsps, as you stated above, so it must have jumped in the first tag. I think your debugging techniques need tuning. A general advice, if you don't know why a jsp behaves like it does, look at the generated source code (which is normally under TOMCAT_HOME/work for tomcat and RESIN_HOME/webapps/yourwebapp/WEB-INF/work for resin). Please help me! Nice Greetings Starki Leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Strange Problem with logic:equals!
Do you have the struts-bean tag library defined in your jsp:? Something like %@ taglib uri=/WEB-INF/struts-bean.tld prefix=bean % Aymeric. On 10/7/05, starki78 [EMAIL PROTECTED] wrote: Hi, we have a strange Problem with logic:equal Look at the following code: //-- first we create a bean bean:define id=myBeanValue value=1/ //-- changing the value is this possible in the way??? % myBeanValue = 2; % // tests with the logic:equals tags logic:equal name=myBeanValue value=1 bris equal/br /logic:equal logic:notEqual name=myBeanValue value=1 bris notequal/br /logic:notEqual After running the jsp we are getting the result= is equal!!! But Why?? Is it not possible to redefine the variable in the way that we try this in the example! What makes us even more worried is that when we debug, it neither jumps in the first nor in the second logic:equal tag. Please help me! Nice Greetings Starki - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Strange Problem with logic:equals!
bean:define creates BOTH
- a script variable (a Java variable you can use in % ... % java blocs)
- a bean in specified scope (defaults to page)
So you have a myBeanValue variable set to 1 and a myBeanValue String
put into page scope.
% myBeanValue = 2; % changes value of script variable. myBeanValue bean in
page scope is not impacted
logic:equal name=myBeanValue value=1 checks the bean in page scope, witch equals
1.
To solve this, you may :
- use scriptlet, not logic tag, to check script variables (NOT RECOMENDED) :
% if (1.equals(myBeanValue)) { % ...% } %
- reuse bean:define to change myBeanValue, but be carreful some servlet
container don't accept multiple use of this tag with the same id, - so NOT RECOMENDED
- not use scriptlets anymore ! Change myBeanValue by using tags, especially use
EL struts tags and JSTL :
c:set var=myBeanValue value=1/
...
c:set var=myBeanValue value=2/
...
c:choose
c:when test=${myBeanValue == '1'}.../c:when
c:otherwise.../c:otherwise
/c:choose
Nico.
Aymeric Alibert a écrit :
Do you have the struts-bean tag library defined in your jsp:?
Something like %@ taglib uri=/WEB-INF/struts-bean.tld prefix=bean %
Aymeric.
On 10/7/05, starki78 [EMAIL PROTECTED] wrote:
Hi, we have a strange Problem
with logic:equal
Look at the following code:
//-- first we create a bean
bean:define id=myBeanValue value=1/
//-- changing the value is this possible in the way???
% myBeanValue = 2; %
// tests with the logic:equals tags
logic:equal name=myBeanValue value=1
bris equal/br
/logic:equal
logic:notEqual name=myBeanValue value=1
bris notequal/br
/logic:notEqual
After running the jsp we are getting the result= is equal!!!
But Why?? Is it not possible to redefine the variable
in the way that we try this in the example!
What makes us even more worried is that
when we debug, it neither jumps in the first nor
in the second logic:equal tag.
Please help me!
Nice Greetings
Starki
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Re: Strange Problem with logic:equals!
Thank you all for your help!
Now I've understood the problem
-- Initial Header ---
From : Nicolas De Loof [EMAIL PROTECTED]
To : Struts Users Mailing List user@struts.apache.org
Cc :
Date : Fri, 07 Oct 2005 11:07:16 +0200
Subject : Re: Strange Problem with logic:equals!
bean:define creates BOTH
- a script variable (a Java variable you can use in % ... % java blocs)
- a bean in specified scope (defaults to page)
So you have a myBeanValue variable set to 1 and a myBeanValue String
put into page scope.
% myBeanValue = 2; % changes value of script variable. myBeanValue bean
in page scope is not impacted
logic:equal name=myBeanValue value=1 checks the bean in page scope,
witch equals 1.
To solve this, you may :
- use scriptlet, not logic tag, to check script variables (NOT RECOMENDED) :
% if (1.equals(myBeanValue)) { % ...% } %
- reuse bean:define to change myBeanValue, but be carreful some servlet
container don't accept multiple use of this tag with the same id, - so NOT
RECOMENDED
- not use scriptlets anymore ! Change myBeanValue by using tags, especially
use EL struts tags and JSTL :
c:set var=myBeanValue value=1/
...
c:set var=myBeanValue value=2/
...
c:choose
c:when test=${myBeanValue == '1'}.../c:when
c:otherwise.../c:otherwise
/c:choose
Nico.
Aymeric Alibert a écrit :
Do you have the struts-bean tag library defined in your jsp:?
Something like %@ taglib uri=/WEB-INF/struts-bean.tld prefix=bean %
Aymeric.
On 10/7/05, starki78 [EMAIL PROTECTED] wrote:
Hi, we have a strange Problem
with logic:equal
Look at the following code:
//-- first we create a bean
bean:define id=myBeanValue value=1/
//-- changing the value is this possible in the way???
% myBeanValue = 2; %
// tests with the logic:equals tags
logic:equal name=myBeanValue value=1
bris equal/br
/logic:equal
logic:notEqual name=myBeanValue value=1
bris notequal/br
/logic:notEqual
After running the jsp we are getting the result= is equal!!!
But Why?? Is it not possible to redefine the variable
in the way that we try this in the example!
What makes us even more worried is that
when we debug, it neither jumps in the first nor
in the second logic:equal tag.
Please help me!
Nice Greetings
Starki
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
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is the property of the Capgemini Group. It is intended only for the person to
whom it is addressed. If you are not the intended recipient, you are not
authorized to read, print, retain, copy, disseminate, distribute, or use
this message or any part thereof. If you receive this message in error,
please notify the sender immediately and delete all copies of this message.
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To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
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