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Issue 4.3

COLUMN

Extending XMLReader

Applying the Chain of Responsibility Pattern

Issue: 4.3 (January/February 2006)
Author: Charles Yeomans
Author Bio: Charles is the author of I Declare: Calling External Functions in REALbasic, available online at http://www.declareSub.com/
Article Description: No description available.
Article Length (in bytes): 8,819
Starting Page Number: 31
Article Number: 4314
Related Web Link(s):

http://www.declareSub.com/

Excerpt of article text...

I needed to write some code to import databases in XML format into a database. Since such files tend toward the large, using an XMLReader object was the obvious choice. In the course of doing so, I quickly encountered a problem -- my event handlers were becoming massive Select Case statements that branched on an accumulation of variables holding table and field names.

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