[jelly] How does context inheritance work?

[Thomas Nichols]

Hi,

I'm having difficulty understanding what JellyContext.setInherit() accomplishes. In a custom tag library I have TagSupport-derivatives : e.g., given
<doc>
<my:a> <!-- maps to TagA -->
<my:b/> <!-- maps to TagB -->
</my:a>
<my:c/> <!-- maps to TagC -->
</doc>

In TagA.doTag() :
...
getContext().setVariable ("monday", "blue");
...

In TagB.doTag() :
System.out.println (getContext().getVariable ("monday"));

This currently prints "blue" - in other words, a context var set in one tag is visible in the context of a child tag. Great!
FWIW, this was _not_ working until I started using CVS HEAD instead of a snapshot.

Now my confusion starts. Although getContext().getInherit() returns true, adding getContext().setInherit (false) to either (or both) doTag() methods seems to have no effect on this behaviour. This is what I had expected from findVariable() -- but not from getVariable(). What am I misunderstanding? Will this same context be visible in TagC?


This is all driven using a modified EmbeddedJelly.java, running CVS HEAD on a Linux / JDK 1.3.1 platform.

Suffice to say that Jelly is stonkingly good, I expect it imminently to achieve world domination. Many thanks for the diligent labours involved.

Yours aye,
Thomas.


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