All That Code: 2012

Tuesday, September 11, 2012

Installing Ubuntu 12.04 TLS on HP 530

Simply follow the tutorial from Ubuntu site

After my installation I encountered a few glitches and issues:

Can't boot into Ubuntu, I have to have my USB plugged in and boot from it
Unable to set up my wireless network, the wireless button on HP530 not working
Unable to find my graphics driver

For issue 1:

sudo grub-install /dev/sda

Then I modify the /boot/grub/menu.lst and change somewhere in the line "quiet splash" to "nomodeset"

For issue 2:

sudo rfkill unblock all

For issue 3:
Can anyone help? I can't seem to find the correct driver.

Monday, July 30, 2012

BroadLEARN Early Learning Credits

BroadLEARN™ Early Learning is a multi-award winning early childhood literacy and numeracy program which features over 300 interactive learning and assessment activities

BroadLEARN™ Early Learning encourages exploration play for your child while developing speaking, listening, reading, writing and computer skills.

My Credit:

http://www.broadlearn.com/credits

How to obtain JTA Transaction / User Transaction from JSF Context

There are 3 ways UserTransaction can be obtained from JSF Context, ie. InitialContext object.

1. Using SessionContext or EJBContext from within your EJB implementation class. Only Bean-Managed transaction beans can have access

@Resources EJBContext context;
UserTransaction utx = (UserTransaction) context.getUserTransaction();

2. Using InitialContext from your JSF controller class or utility class using the EJB

UserTransaction utx; 
try {
    InitialContext context = new InitialContext();
    utx = (UserTransaction) context.lookup("java:comp/UserTransaction");
} catch(Exception e){}

3. Using InitialContext from your JSF controller class or utility class using the EJB

UserTransaction utx; 
try {
    InitialContext context = new InitialContext();
    utx = (UserTransaction) context.lookup("java.transaction.UserTransaction");
} catch(Exception e){}

Wednesday, July 25, 2012

Embedded Glassfish 3.1.2 - Arquillian compile error

If you get :

Absent Code attribute in method that is not native or abstract in class file javax/validation/constraints/Pattern$Flag

Solution: remove this dependency (if you have it)

<dependency>
    <groupId>javax</groupId>
    <artifactId>javaee-web-api</artifactId>
    <version>6.0</version>
    <scope>provided</scope>
</dependency>

Another one:

ArquillianServletRunner not found. Could not determine ContextRoot from ProtocolMetadata, please contact DeployableContainer developer.

which is caused by

Error invoking ServletContainerInitializer org.apache.jasper.runtime.TldScanner
java.lang.NoSuchMethodError: javax.servlet.ServletContext.getServletRegistration(Ljava/lang/String;)Ljavax/servlet/ServletRegistration;
 at org.apache.jasper.runtime.TldScanner.onStartup(TldScanner.java:231)

Solution is to modify your pom.xml. Tell maven-surefire-plugin to ignore servlet-api 2.3

<plugin>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.12</version>   
    <configuration>
       <forkMode>always</forkMode>
       <classpathDependencyExcludes>
           <classpathDependencyExcludes>               
               javax.servlet:servlet-api
           </classpathDependencyExcludes>
           <classpathDependencyExcludes>
               org.apache.felix:javax.servlet
           </classpathDependencyExcludes>
      <classpathDependencyExcludes>
    </configuration>
</plugin>

Taken from this site: http://java.net/jira/browse/GLASSFISH-17445

Saturday, April 14, 2012

Learning JSF?

Here are some cool tutorials and references: