.setRequestContextFactory(this);
                }
                factories.add(factory);
            } catch (ClassNotFoundException e) {
                // We log it, because it could be a default configuration class that
                // is simply not present.
                log.warn("Cannot find TilesContextFactory class "
                        + classNames[i]);
                if (log.isDebugEnabled()) {
                    log.debug("Cannot find TilesContextFactory class "
                            + classNames[i], e);
                }
            } catch (InstantiationException e) {
                throw new IllegalArgumentException(
                        "Cannot instantiate TilesFactoryClass " + classNames[i],
                        e);
            } catch (IllegalAccessException e) {
                throw new IllegalArgumentException(
                        "Cannot access TilesFactoryClass " + classNames[i]
                                + " default constructor", e);
            }
        }
    }

    /** {@inheritDoc} */
    public TilesApplicationContext createApplicationContext(Object context) {
        TilesApplicationContext retValue = null;

        for (Iterator<TilesContextFactory> factoryIt = factories.iterator(); factoryIt