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https://issues.apache.org/jira/browse/DERBY-3327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12570007#action_12570007
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Rick Hillegas commented on DERBY-3327:
--------------------------------------
Thanks for the patch, Dag. As usual, I don't have much to add that's
substantive. Just a couple points:
o I understand your misgivings about the management of the current schema. The
existing code is pretty organic at this point.
o There are a couple places in the LCC where you lookup the session context
based on the Activation. It seems to me that a method like the following might
be a useful abstraction:
public SQLSessionContext getCurrentSQLSessionContext( Activation caller )
{
if (caller == null ) { return getTopLevelSQLSessionContext(); }
else { return caller.getNestedSQLSessionContext(); }
}
> SQL roles: Implement authorization stack
> ----------------------------------------
>
> Key: DERBY-3327
> URL: https://issues.apache.org/jira/browse/DERBY-3327
> Project: Derby
> Issue Type: New Feature
> Components: Security, SQL
> Reporter: Dag H. Wanvik
> Assignee: Dag H. Wanvik
> Fix For: 10.4.0.0
>
> Attachments: DERBY-3327-1.diff, DERBY-3327-1.stat, DERBY-3327-2.diff,
> DERBY-3327-2.stat, DERBY-3327-3.diff, DERBY-3327-3.stat,
> DERBY-3327-4-full.diff, DERBY-3327-4-full.stat
>
>
> The current LanguageConnectionContext keeps the user authorization identifier
> for an SQL session.
> The lcc is shared context also for nested connections (opened from stored
> procedures).
> So far, for roles, the current role has been stored in the lcc also. However,
> SQL requires that
> authorization identifers be pushed on a "authorization stack" when calling a
> stored procedure, cf.
> SQL 2003, vol 2, section 4.34.1.1 and 4.27.3.
> This allows a caller to keep its current role after a call even if changed by
> the stored procedure.
> This issue will implement the current role name part ("cell") of the
> authorization stack.
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