February 8th, 2010
Sometimes the problem with validators is that you can’t send a cancel button from within a form, because the validator stops processing it. In this case it is usefull to set the button on immediate=”true”, but then the problem might be that the view ist not correctly cleared. To force clearing the view, it is important to navigate with an outcome other than null (”").
<h:commandButton immediate="true"
actionListener="#{bean.discardEditing}"
value="#{msg.action_cancel}" />
In the example “bean.discardEditing” does some cleanup and returns a navigation outcome to navigate to the same screen again, e.g. “revertToEdit”.
See also:
Tags: jsf
Posted in JSF, Rich Faces | No Comments »
February 8th, 2010
To put a general error message on screen, that is shown only if errors occurred (but is not h:messages) use:
facesContext.maximumSeverity
An example:
<h:panelGroup rendered="#{! empty facesContext.maximumSeverity}">
<h:outputText styleClass="error" value="Some errors occurred." />
...
</h:panelGroup>
Tags: jsf
Posted in JSF | No Comments »
January 27th, 2010
Avoid to mix those two up. Do NOT nest them to trigger rerendering, like this:
<a4j:commandLink ajaxSingle="true" actionListener="#{...}">
<a4j:support event="onclick" reRender="..." />
</a4j:commandLink>
It will lead to funky behaviour, sometimes sending the link, sometimes not. If you use a4j:commandLink you do not need a4j:support. Do trigger rerendering from within the commandLink.
<a4j:commandLink ajaxSingle="true" actionListener="#{...}" reRender="..." />
Tags: jsf, rich faces
Posted in JSF, Rich Faces | No Comments »
January 20th, 2010
Posted in Eclipse | No Comments »
January 7th, 2010
If your project appears to be a death march, you might like this:
http://www.youtube.com/watch?v=KcyzF06ridc
(german language)
Posted in Other | No Comments »
December 18th, 2009
To get the md5 hash of a string from the command line, do e.g. this:
echo -n hallo | md5sum
It is important to do “echo -n” to prevent echo from outputting the trailing new line. Otherwise the newline will be included in the hash.
Posted in Linux | No Comments »
November 19th, 2009
this link might be helpful: wiki.eclispe.org
by the way: you don’t need to store your username and password as plain text info in the ini file! For security reasons I think you should leave it out, because Eclipse will ask you for it later.
Posted in Java | No Comments »
October 5th, 2009
Use
tail -f /path/to/my.log | perl -p -e 's/(KEYWORD_1|KEYWORD_2)/\033[7;1m$1\033[0m/g;'
to highlight all occurences of KEYWORD_1 and KEYWORD_2 in tail -f.
Tags: tail -f
Posted in Linux | No Comments »
August 19th, 2009
With facelets you can omit the h:outputText tags. Instead of
<h:outputText value="#{msg.editEmployee_name}" />
you can just write
value="#{msg.editEmployee_name}"
Tags: facelets
Posted in Facelets | No Comments »
July 29th, 2009
I sometimes hat the problem that the auto formatting of eclipse destroyed my cvs comments.
But the solution is very easy. You just have to use
/*-
instead of
/*
to start the comment . That’s it and eclipse will not format your cvs comments any more.
Posted in Eclipse | No Comments »