DDevelopment & Design

GWTaculous – visual effects on the loose !

GWTaculous is open source visual effects library for application created in or based on GWT. It is based on other open source library –

scriptaculous which is javascript solution for visual effects and html object manipulations. At the first glance GWTaculous is a java wrapper for javascript functions (JSNI) in scriptaculous library. But in fact it is complete solution with full java API (visual effects, effect queues, animation GWT event handlers etc). Let alone documentation and use examples. It also contains some minor bug fixes and will be updated with new visual effects. You don’t even have to know javascript to use it. Bring life to your user interface with a single line of code ! Read more on project home page: http://top.touk.pl/confluence/display/top/GWTaculous

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DDevelopment & Design

Spring Security by example: securing methods

This is a part of a simple Spring Security tutorial:

1. Set up and form authentication
2. User in the backend (getting logged user, authentication, testing)
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4. Securing methods
5. OpenID (login via gmail)
6. OAuth2 (login via Facebook)
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Securing web resources is all nice and cool, but in a well designed application it's more natural to secure methods (for example on backend facade or even domain objects). While we may get away with role-based authorization in many intranet business applications, nobody will ever handle assigning roles to users in a public, free to use Internet service. We need authorization based on rules described in our domain.

For example: there is a service AlterStory, that allows cooperative writing of stories, where one user is a director (like a movie director), deciding which chapter proposed by other authors should make it to the final story.

The method for accepting chapters, looks like this:

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