solr-parse

Turns Solr queries into Clojure predicates.

What's this?

It's probably nothing interesting for you, really!

And it's also half-bake.

Take a look only if you want to see an usage of Christophe Grand's parser: parsley.

It takes a Solr query, and output a Clojure predicate that takes an object and return true if it matches the query.

dependency

In your project.clj, in the dependency key, add this:

[solr-parse 0.1.0-SNAPSHOT]

Then

lein deps

Then you're good

Usage

The idea is to be able to compute, given a function and a solr query, a clojure function able to query a clj data store.

For example, given a function 'default-transco' which takes 2 parameters and returns a list of data:

(fact
  (default-transco :a "b")
    => '(= (m :a) "b"))

And a query:

(fact
  (compile-query default-transco "(a:b AND c:\"d\") OR (e:f) OR g:h")
    => '(or (and (= (m :a) :b) (= (m :c) "d")) (= (m :e) :f) (= (m :g) :h)))

Here is another function reverse-transco:

(fact
  (reverse-transco :a "b")
    => '(= (m "b") :a))

And the same query:

(fact
  (compile-query reverse-transco "(a:b AND c:\"d\") OR (e:f) OR g:h")
    => '(or (and (= (m :b) :a) (= (m "d") :c)) (= (m :f) :e) (= (m :h) :g)))

In this example:

• a:b, c:"d", e:f, and g:h are some key value pair which hold meaning in your context.
• m represents something in your default-transco or reverse-transco

License

Copyright © 2012 commiters

Distributed under the Eclipse Public License, the same as Clojure.