dolejsky.com

Java – print stack trace to a String

ludek — Thu, 25 Feb 2010 18:54:10 +0000

Simple and quick one today - what if we need to print stack trace into a String?

PLAIN TEXT

JAVA:

...
catch (Exception e) {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
e.printStackTrace(pw);
pw.flush();
String stackTraceString = sw.toString();
//use the stackTraceString as you need...
}
...

Instantiating Beehive JdbcControl manually

ludek — Thu, 18 Feb 2010 17:43:31 +0000

Common usage pattern for Beehive Jdbc control is:

Create DB control class by extending JdbcControl
Declare DB control variable in page controller and use @Control annotation to have it automatically instantiated and injected
Use the DB control

The above works fine. But what happens if we would like to use our DB control class from within JSP page which is not part of our Beehive application and has no access to our controller?

The following text presents one possible approach.

Custom DB control class:

PLAIN TEXT

JAVA:

@ControlExtension
@JdbcControl.ConnectionDataSource(jndiName = "dataSource")
public interface MyDBControl extends JdbcControl {
@JdbcControl.SQL(
statement="SELECT * FROM \"SCHEMA\".\"MYTABLE\"")
public MyObject[] getAllObjects();
...
}

Classic approach, instantiate via @Control annotation in controller:

PLAIN TEXT

JAVA:

public class MyController extends PageFlowController {
@Control
private MyDBControl myControl;
...
//you can now use myControl...

But what if we need to instantiate the DB control class manually? One possible approach might be creating a factory like this:

PLAIN TEXT

JAVA:

@ControlReferences({com.dolejsky.MyDBControl.class})
public class MyDBControlFactory {
public static MyDBControl createDBControl() {
try {
ControlBeanContext ctx = new ServletBeanContext();
MyDBControlBean controlBean =
(MyDBControlBean)Controls.instantiate(
Thread.currentThread().getContextClassLoader(),
"com.dolejsky.MyDBControlBean",
null,
ctx,
null);
return controlBean;
} catch (ClassNotFoundException e) {
//handle it...
}
return null;
}
}

Malibu for iPhone/ iPod touch released!

ludek — Fri, 05 Feb 2010 05:00:48 +0000

Malibu is a free drumming game for iPhone and/or iPod touch with talking pelican and awesome dancers and it was just released!

Download here.

More information can be found here.

Remote Mic now supports both Mac OS and MS Windows!

ludek — Thu, 19 Nov 2009 12:00:07 +0000

Remote Mix is application that turns your iPhone into a wireless microphone (or a bug).

Today, Remote Mic Console 1.3 has been released for both Mac OS 1.5.x and MS Windows XP.

More information here

GrowlTunes patch accepted

ludek — Tue, 10 Nov 2009 11:08:40 +0000

My small GrowlTunes patch (described here) made its way into official release of Growl 1.1.5:

I am happy to have contributed to such a great piece of an open source software.

Trashcan for iPhone/iPod touch

ludek — Sun, 26 Apr 2009 08:17:03 +0000

Simple and fun game helping you get over all these boring meetings!

More info on http://www.dolejsky.com/trashcan. Download here.

John Mayer – Good Love Is On The Way – Drum tab

ludek — Thu, 02 Apr 2009 14:34:36 +0000

Again, very original drumming in this song. Check it out!

Download drum tab PDF here.

John Mayer – Bold As Love – Drum tab

ludek — Thu, 02 Apr 2009 14:33:04 +0000

One of my favorites songs to play on drums. Very interesting bass drum part.

Download drum tab PDF here.

Lenny Kravitz – Rock and Roll is Dead – Drum tab

ludek — Thu, 02 Apr 2009 14:30:41 +0000

Fun song to play. Be sure to groove hard!

Download drum tab PDF here.

Eric Clapton – Layla (unplugged) – Drum tab

ludek — Thu, 02 Apr 2009 14:28:26 +0000

One of the well known songs from Eric Clapton's MTV Unplugged CD.

Download drum tab as PDF here.