DSL and kernel scopes

DSL is a structure based format explained in Tigase XMPP Server Administration Guide: DSL file format section. It is important to know that kernel and beans structure have an impact on what the configuration in DSL will look like.

Example kernel and beans classes. 

@Bean(name = "bean1", parent = Kernel.class, active = true )
public class Bean1 implements RegistrarBean {
  @ConfigField(desc = "V1")
  private String v1;

  public void register(Kernel kernel) {

  public void unregister(Kernel kernel) {}

public class Bean11 {
  @ConfigField(desc = "V11")
  private String v11;

@Bean(name = "bean1_2", parent = Bean1.class, active = true)
public class Bean12 {
  @ConfigField(desc = "V12")
  private String v12;

@Bean(name = "bean2", active = true)
public class Bean2 {
  @ConfigField(desc = "V2")
  private String v2;

public class Bean3 {
  @ConfigField(desc = "V3")
  private String v3;

public class Main {
  public static void main(String[] args) {
    Kernel kernel = new Kernel("root");
    DSLBeanConfigurator configurator = kernel.getInstance(DSLBeanConfigurator.class);
    Map<String, Object> cfg = new ConfigReader().read(file);

    configurator.registerBeans(null, null, config.getProperties());


Following classes will produce following structure of beans:

  • "bean1" of class Bean1

    • "bean1_1" of class Bean11
    • "bean1_2" of class Bean12
  • "bean4" of class Bean2
  • "bean3" of class Bean3


This is a simplified structure, the actual structure is slightly more complex. However. this version makes it easier to explain structure of beans and impact on configuration file structure.


Even though Bean2 was annotated with name bean2, it was registered with name bean4 as this name was passed during registration of a bean in main() method.


Bean12 was registered under name bean1_2 as subbean of Bean1 as a result of annotation of Bean12

As mentioned DSL file structure depends on structure of beans, a file to set a config field in each bean to bean name should look like that:

'bean1' () {
    'v1' = 'bean1'

    'bean1_1' () {
        'v11' = 'bean1_1'
    'bean1_2' () {
        'v12' = 'bean1_2'
'bean4' () {
    'v2' = 'bean4'
'bean3' () {
    'v3' = 'bean3'