Thanks for your reply Antonio.
This behaviour was available in Struts-Tiles, has it been removed from Tiles
2.0?
The rules definition is, as you say, not designed to be rendered. It's purpose
is to hold a list of security roles - these roles are processed
programmatically and this decides whether the user sees that menu item (or
entire menu), based on their assigned role.
This functionality is used in our (very extensive) Branding & Security
framework for Struts-Tiles, and I'd be keen to maintain it with only minimal
change if possible. However, if it's not possible to recreate this in Tiles
2.0, I'd appreciate any suggestions as to how to achieve the objective.
Regards,
Jim
Jim Gallagher,
Core Web Security,
Group Technology Solutions,
Royal Bank of Scotland,
Parkgate Business Park,
Parkgate Street,
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-----Original Message-----
From: Antonio Petrelli [mailto:[email protected]]
Sent: 09 March 2010 11:11
To: [email protected]
Subject: Re: Issue with retrieving Tiles definitions in code
2010/3/9 Gallagher, Jim (UK Europe Middle East & Group Functions, Technology
Services) <[email protected]>:
> A rules definition is defined as follows:
>
> <definition name="rule.menu.messaging.view">
> <put-attribute name="type" value="one_role" />
> <put-list-attribute name="roles">
> <add-attribute value="ROLE1" />
> <add-attribute value="ROLE2" />
> <add-attribute value="ROLE3" />
> </put-list-attribute>
> </definition>
>
> Ultimately I want to retrieve the rules definition, retrieve the roles
> specified and process them according to our own security standards here.
>
> Where it's falling down is that in the TilesMenuRuleControlPreparer class,
> I'm trying to retrieve the rules definition as follows:
>
> DefinitionManager definitionManager = new
> DefinitionManager(
>
> "org.apache.tiles.impl.BasicTilesContainer.DEFINITIONS_CONFIG");
>
> Definition def =
> definitionManager.getDefinition(name,
> tilesRequestContext);
>
> This is failing with a NullPointerException - on debugging, I see that the
> Factory instance within the DefinitionManager is null.
This is normal, you are not using the correct tool.
DefinitionManager is a tool used by Tiles to define newly-created definitions,
not to retrieve already stored ones.
However, there is a problem: you cannot get a definition using the Tiles API.
You can only render it, and use the attributes in the template page. So I think
we need to find a workaround.
The definition has no meaning without a template (its own, or inherited from an
extended definition).
How do you want to use these "rules"?
Antonio
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