Parse Context: The current parse context. This is passed to the optimizer which then transforms the operator tree using the parse context. All the optimizations are performed sequentially and then the new parse context populated. Note that since the parse context contains the operator tree, it can be easily retrieved by the next optimization step or finally for task generation after the plan has been completely optimized.
Class which tracks the context and state involved with parsing an HTML document via SAX events. Also holds some page URL information, and provides some URL resolving functionality. Lastly, this class exposes a general purpose HashMap for use by specific applications.
@author brad
@version $Date$, $Revision$
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