XML and Perl

Disadvantages of Event-Driven Parsers

Event-driven parsers have several disadvantages compared to DOM- or tree-based parsers.

Event-based parser applications are more difficult to develop than the equivalent DOM-based parser application. In an event-driven parser application, the data is pushed into the application by the parser, so the application must be prepared to accept and process the data using a series of event handler subroutines. The subroutines aren’t difficult to develop, especially after you have a sample application to use as a template, but it does require some time and effort on your part. An application built using a DOM- or tree-based parser behaves a little differently in that the parser builds a tree, and it is the responsibility ...