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Created by James on January 11, 2011 22:08:26
Last update: February 03, 2012 11:23:25
By default Firefox puts a dotted line box around the link or button label when you click them. Sometimes it's annoying and makes your sexy buttons look ugly. You can get rid of the dotted lines for links with outline:none in CSS, but that doesn't work for buttons.
<!doctype html>
<html>
<head>
<style t...
For buttons you need " button::-moz-focus-inner { border: 0; } ":
<!doctype html>
<html>
<head>
<style t...
I've also seen this:
/* get rid of those system borders being generated...
For more information :
Remove Button Focus Outline Using CSS
Created by James on February 02, 2012 09:20:22
Last update: February 02, 2012 09:20:22
This example came from the jQuery validation documentation. The required rule can be used to validate a required selection box when you set the value of the first option to empty.
<!DOCTYPE HTML>
<html>
<head>
<scrip...
The error message is the title since no error message is specified. A more fully defined validation check would look like this:
$('#my-form').validate({
errorElement: "p",
...
Created by James on January 27, 2012 12:38:53
Last update: January 27, 2012 12:39:46
A brief summary of jQuery DOM manipulation methods for reference.
.before() and .insertBefore() : insert content before target element - as sibling.
Examples:
// insert summary before details
$('#detail').b...
.after() and .insertAfter() : insert content after target element - as sibling.
Examples:
// insert details after summary
$('#summary').a...
.prepend() and .prependTo() : insert content as first child of target element.
Examples:
// prepend caption to table
$('table').prepend(...
.append() and .appendTo() : insert content as last child of target element.
Examples:
// append row to table
$('table').append('<tr><...
Created by Fang on November 21, 2011 16:30:56
Last update: December 07, 2011 08:54:32
This is a series of notes on building custom JSF 2.0 facelet taglibs, ordered from the simplest to the less simple. Hopefully it can help you to get started on how to build custom taglibs for JSF. A simple JSF facelets taglib example The simplest taglib I can think of. Using EL expression with a custom tag Make tag attributes dynamic. Mixing custom tag with facelet ui taglibs Discover things you might run into when you get into more details. Which EL context to use? Using the wrong EL context can lead to subtle bugs. JSF facelet taglib backed by a UI component A UIComponent can be a tag handler, without being TagHandler . Using tag handler, UI component and renderer with a JSF facelet...
Created by mee2 on November 20, 2011 20:26:05
Last update: November 20, 2011 20:26:34
Stack trace:
Caused by: org.alfresco.error.AlfrescoRuntimeExcep...
Cause:
Location of Alfresco keystore changed via shared/classes/alfresco-global.properties but keystore files not exist.
Solution : copy keystore files from alfresco.war :
cp -R webapps/alfresco/WEB-INF/classes/alfresco/ke...
Created by Fang on November 10, 2011 09:26:12
Last update: November 10, 2011 09:26:12
Syntax highlighted XML schema for JSF 2.0 Application Configuration Resource File ( faces-config.xml ). Almost 3000 lines!
<?xml version="1.0" encoding="UTF-8"?>
<xsd:sch...
Created by Dr. Xi on February 12, 2010 22:52:27
Last update: November 08, 2011 19:48:09
For Tomcat 6, there's no default manager username and password. You do have to set it up yourself, though it's pretty straightforward. The Tomcat manager webapp is restricted to users with a role named manager . So you'll need to create a user and assign the manager role to it.
Edit $CATALINA_BASE/conf/tomcat-users.xml to read:
<?xml version='1.0' encoding='utf-8'?>
<!--
...
For tomcat 7:
<tomcat-users>
<role rolename="manager"/>
...
Created by Fang on September 07, 2009 20:44:15
Last update: November 03, 2011 14:43:19
Step 1: Repackage a web app as EAR A Java EE application is a multimodule Maven project. At the very least you'll need to package a WAR and an EAR. To get started, I'll simply re-package the simple webapp as an EAR. Create a directory named javaee-app Copy the webapp from here to javaee-app . Rename struts1app to webapp . Create pom.xml under javaee-app :
<project> <modelVersion>4.0.0</modelVersion>... Create a directory named ear under javaee-app . Create pom.xml under ear : <project> <modelVersion>4.0.0</modelVersion>... Modify pom.xml in the webapp directory so that it looks like this: <project> <modelVersion>4.0.0</modelVersion> ... Build with " mvn package " in the javaee-app directory. You can see that ear-1.0.ear is successfully generated in javaee-app/ear/target . Maven successfully resolves dependencies between the sub-projects....
Created by magnum on October 08, 2011 20:37:04
Last update: October 08, 2011 20:37:35
Three APIs for event based non-blocking I/O:
select()
select() is limited to FD_SETSIZE handles. This limit is compiled in to the standard library and user programs.
poll()
There is no hardcoded limit to the number of file descriptors poll() can handle, but it does get slow about a few thousand.
epoll()
The epoll event mechanism is much more scalable than the traditional poll when there are thousands of file descriptors in the interest set. The work done by poll depends on the size of the interest set whereas with epoll (like Solaris /dev/poll ) the registration of interest is separated from the retrieval of the events.
Reference:
The C10K problem
Created by magnum on September 27, 2011 09:32:18
Last update: September 27, 2011 09:33:04
Use tcpdump to monitor traffic on a network: To print all incoming and outgoing packets on host 192.168.0.1 :
tcpdump host 192.168.0.1 To print all incoming and outgoing IP packets on host firebird : tcpdump ip host firebird To write raw packets to a file, rather than parsing and printing them out: tcpdump ip host firebird -w /tmp/firebird.pcap To listen on interface eth0 (without this, tcpdump listens on the lowest numbered, configured up interface except loopback): tcpdump -i eth0 ip Use switch -X for more verbose output: tcpdump -i eth0 ip -X host 192.168.0.1 Outgoing from 192.168.0.1 : tcpdump -i eth0 ip -X src host 192.168.0.1 Incoming to 192.168.0.1 : tcpdump -i eth0 ip -X dst host 192.168.0.1 More verbose output: tcpdump -i eth0 tcp -vvX host 192.168.0.1...
