private T createInstance()

in webbeans-impl/src/main/java/org/apache/webbeans/config/WebBeansContext.java [561:626]
59 lines of code
12 McCabe index (conditional complexity)

    private <T> T createInstance(Class<T> clazz)
    {
        // skip the reflection for know classes
        if (DefaultLoaderService.class == clazz)
        {
            return clazz.cast(new DefaultLoaderService());
        }
        if (SimpleSecurityService.class == clazz)
        {
            return clazz.cast(new SimpleSecurityService());
        }
        if (DefaultApplicationBoundaryService.class == clazz)
        {
            return clazz.cast(new DefaultApplicationBoundaryService());
        }
        if (DefaultBeanArchiveService.class == clazz)
        {
            return clazz.cast(new DefaultBeanArchiveService());
        }
        if (DefaultJndiService.class == clazz)
        {
            return clazz.cast(new DefaultJndiService());
        }
        if (DefaultContextsService.class == clazz)
        {
            return clazz.cast(new DefaultContextsService(this));
        }
        if (DefaultConversationService.class == clazz)
        {
            return clazz.cast(new DefaultConversationService());
        }

        // try by reflection for extensions
        try
        {

            // first try constructor that takes this object as an argument
            try
            {
                Constructor<T> constructor = clazz.getConstructor(WebBeansContext.class);
                return constructor.newInstance(this);
            }
            catch (NoSuchMethodException e)
            {
            }

            // then try a no-arg constructor
            try
            {
                Constructor<T> constructor = clazz.getConstructor();
                return constructor.newInstance();
            }
            catch (NoSuchMethodException e)
            {
                throw new WebBeansException("No suitable constructor : " + clazz.getName(), e.getCause());
            }
        }
        catch (InstantiationException | InvocationTargetException e)
        {
            throw new WebBeansException("Unable to instantiate class : " + clazz.getName(), e.getCause());
        }
        catch (IllegalAccessException e)
        {
            throw new WebBeansException("Illegal access exception in creating instance with class : " + clazz.getName(), e);
        }
    }