h2[1] is an upcoming database written purely in Java. It is open source and gaining wide popularity among other projects as well as community[2]. It claims to be faster than most of other open source & non open source databases[3].

Here is a short guide which will get you started with h2 in no time.

Note : These steps are performed on Linux. It may would work on Windows subjected to slight modifications

Problem

My POJO method has meaningful names for parameters. But when I deploy this as a web service in Axis2/WSAS, WSDL shows parameter names as param0,param1... etc. This is very confusing for clients of the service. How can I avoid this?

Problem via an example

1.Create a Java class containing following

class Test{
  public String greet(String name,String location){
    return "Hello "+ name + " from "+location;
  }
}

2. Compile the class

Introduction

Shell scripts allow sys-admins to write utility programs to speed up recurrent administration tasks. Usually they are faster compared to an equalent version from a traditional programming language & provides the expected functionality using few lines of code.
 
But often these scripts can only be accessed using a shell console. Following tutorial shows how you can extend the accessibility scope of your shell scripts by using WSO2's Web Services Application Server(WSAS).
 

I have a web service which accepts following soap envelop.

Introduction

Data Service configuration Language (http://wso2.org/wiki/display/wsf/Data+Services+and+Resources)  allows you to call a query using results returned from prior. (i.e. nested query support). What follows is a small example demonstrating how to use nested query feature.

Problem

JDBC driver available from http://www.zentus.com/sqlitejdbc/ is not compatible with SQLite 2.x databases.

Solution

1. Download driver from http://www.ch-werner.de/javasqlite/
2. Extract the zip file & copy sqlite_jni.dll into c:\windows\system32
3. Add sqlite.jar to you classpath
4. Following is how your java code should look like :

See my previous blog http://wso2.org/blog/sumedha/3157.