Hello, thanks for looking!

I have been looking around CPAN for a module that might save me from starting from scratch. So far I haven't found what I'm looking for hopefully due to a failure to use the proper terminology or focusing on too narrow of a use case.

I have some data in Redis that I'd like to be able to run SQL-style queries on. I'm not looking to invent a SQL wrapper for Redis but I do think it would be useful to have an ability to test values against ad hoc conditionals.

I'd like to be able to pass a subroutine a conditional test and a value to test against it. For example the conditional could be a hash ref like this (say we're testing a zip code):

my $conditional_test = {
        'OR' => {
            'condition1' => {
                'value' => '10022'
            }
            'condition2' => {
                'value' => '96813'
            }
            'condition3' => {
                'value' => '55401'
            }
        }
}

if(my_condition_test_sub($conditional_test,$redis_handle->get('key')))
+{
    #do something
}

[download]

Possible conditions could be (and, or, not...)

Ideally we could nest these conditions as well which is why I'm looking for a parser that's already built. I did find a grammar parser that looked like it worked for natural language as well as some conditional parsers specific to specialized data (XML, lists) but nothing generalized.

Has anyone come across this particular problem (not Redis queries but checking data against ad hoc value tests) before and found a good solution? It seems like a use case that might warrant a module.

Thanks again for looking.

In reply to Module for Conditional Parsing by mwb613

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