hi,

Thanks for creating this very useful project.

I'm new to the droids, and have just learnt most of the concepts and able to
write custom parser, filter, handler etc. And I have encountered a use case
that i want to parse and store some custom data in the Parse/ParseData, and
have the custom data available in the handler.

Take an hypothetical example, assume I have a crawler that run on Google's
search result, the parser parse the a result page and extract 10 links
together with the 10 cache links. In the Droids framework, there is no way
to pass the cache links to the handle, right? As a workaround, i could just
use a singleton to store a map of data using the uri as the key, but it
seems to me it is better if the ParseData could store more than the outlinks
but also some custom data that we use. What do you think?

The implementation could be very simple, just store a Map

Regards,
mingfai

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