public FactorySet() 
{
  factories = new HashMap();
}

Constructor.

 abstract protected DefinitionsFactory createFactory(Object key,
    ServletRequest request,
    ServletContext servletContext) throws DefinitionsFactoryException
Create a factory for specified key.
This method is called by getFactory() when the requested factory doesn't already exist.
Must return a factory, or a default one.
Real implementation needs to provide this method.

 abstract protected DefinitionsFactory getDefaultFactory()
Get default factory.

 public ComponentDefinition getDefinition(String name,
    ServletRequest request,
    ServletContext servletContext) throws NoSuchDefinitionException, DefinitionsFactoryException 
{
  if( factories == null )
    throw new FactoryNotFoundException( "No definitions factory defined" );
  Object key = getDefinitionsFactoryKey( name, request, servletContext);
  DefinitionsFactory factory = getFactory( key, request, servletContext);
  return factory.getDefinition( name, request, servletContext );
}

Get a definition by its name.

 abstract protected Object getDefinitionsFactoryKey(String name,
    ServletRequest request,
    ServletContext servletContext)
Extract key that will be used to get the sub factory.

 protected DefinitionsFactory getFactory(Object key,
    ServletRequest request,
    ServletContext servletContext) throws DefinitionsFactoryException 
{
  if(key == null )
    return getDefaultFactory();
  Object factory = factories.get( key );
  if( factory == null )
    {
      // synchronize creation to avoid double creation by separate threads.
      // Also, check if factory hasn't been created while waiting for synchronized
      // section.
    synchronized(factories)
      {
      factory = factories.get( key );
      if( factory == null )
        {
        factory = createFactory( key, request, servletContext);
        factories.put( key, factory );
        } // end if
      } // end synchronized
    } // end if
  return (DefinitionsFactory)factory;
}

Get a factory by its key. If key is null, return defaultFactory. Search in loaded factories. If not found, create factory and store return value in loaded factories.

 abstract public  void initFactory(ServletContext servletContext,
    Map properties) throws DefinitionsFactoryException
Init factory set.

 public String toString() 
{
    Iterator i = factories.values().iterator();
    StringBuffer buff = new StringBuffer( "all FactorySet's factory : \n" );
    while( i.hasNext() )
      {
      buff.append( i.next().toString() ).append("\n");
      }
    return buff.toString();
}

Return String representation.