SAX: Next Round

[Rob Schoening]

> On the other hand, as long as a ParserFilter can be constructed with a
> null Parser, it can be subclassed to subsequently set the parent.


I'll second this.

It's easy to get boxed in when too much code gets initialized in the
constructor.  Often I find that code is in the constructor not because it
belongs there but because it makes issues of immutability plainly obvious.
But this gets difficult when you try to implement a non-trivial inheritance
structure.  I have found that this can be especially frustrating (at least
in Java) since constructor calls to super() must precede all other code in
the constructor.

Rob


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