public XmlDefinition() 
{
   super();
   //if(debug)
     //System.out.println( "create definition" );
}

Constructor.

 public  void addAttribute(XmlAttribute attribute) 
{
    putAttribute( attribute.getName(), attribute.getValue() );
}

Add an attribute to this component.

 public String getExtends() 
{
    return inherit;
}

Get extends.

 public boolean isExtending() 
{
    return inherit!=null;
}

Get extends flag.

 public  void overload(XmlDefinition child) 
{
    if( child.getPath() != null )
      {
      path = child.getPath();
      }
    if( child.getExtends() != null )
      {
      inherit = child.getExtends();
      }
    if( child.getRole() != null )
      {
      role = child.getRole();
      }
    if( child.getController()!=null )
      {
      controller = child.getController();
      controllerType =  child.getControllerType();
      }
      // put all child attributes in parent.
    attributes.putAll( child.getAttributes());
}

Overload this definition with passed child. All attributes from child are copied to this definition. Previous attributes with same name are disguarded. Special attribute 'path','role' and 'extends' are overloaded if defined in child.

 public  void resolveInheritance(XmlDefinitionsSet definitionsSet) throws NoSuchDefinitionException 
{
      // Already done, or not needed ?
    if( isVisited || !isExtending() )
      return;
    if(log.isDebugEnabled())
      log.debug( "Resolve definition for child name='" + getName()
              + "' extends='" + getExtends() + "'.");
      // Set as visited to avoid endless recurisvity.
    setIsVisited( true );
      // Resolve parent before itself.
    XmlDefinition parent = definitionsSet.getDefinition( getExtends() );
    if( parent == null )
      { // error
      String msg = "Error while resolving definition inheritance: child '"
                           + getName() +    "' can't find its ancestor '"
                           + getExtends() + "'. Please check your description file.";
      log.error( msg );
        // to do : find better exception
      throw new NoSuchDefinitionException( msg );
      }
    parent.resolveInheritance( definitionsSet );
      // Iterate on each parent's attribute and add it if not defined in child.
    Iterator parentAttributes = parent.getAttributes().keySet().iterator();
    while( parentAttributes.hasNext() )
      {
      String name = (String)parentAttributes.next();
      if( !getAttributes().containsKey(name) )
        putAttribute( name, parent.getAttribute(name) );
      }
      // Set path and role if not setted
    if( path == null )
      setPath( parent.getPath() );
    if( role == null )
      setRole( parent.getRole() );
    if( controller==null )
      {
      setController( parent.getController());
      setControllerType( parent.getControllerType());
      }
}

Resolve inheritance. First, resolve parent's inheritance, then set path to the parent's path. Also copy attributes setted in parent, and not set in child If instance doesn't extend anything, do nothing.

 public  void setExtends(String name) 
{
    inherit = name;
}

Set extends.

 public  void setIsVisited(boolean isVisited) 
{
    this.isVisited = isVisited;
}

Set isVisited.