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2012-04-02T16:05:56.267
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2012-04-02T16:16:47.353
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2012-04-02T16:16:47.353
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text
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A lot depends on how you choose to represent models in your code. Let's assume you use records. Here's a contrived example of how you might "annotate" a record and provide serializers for XML and JSON. <pre><code>;; Depends on cheshire and data.xml (ns user (:require [cheshire.core :as json] [clojure.data.xml :as xml])) (defrecord Person [name age hometown]) (defrecord Animal [name sound]) (def xml-attrs {Person [:name :age] Animal [:name]}) (defn record->xml-data [rec] (let [tag (-> rec class .getSimpleName .toLowerCase keyword) attrs (select-keys rec (xml-attrs (class rec))) content (for [[k v] rec :when (not (contains? attrs k))] (xml/element k nil (str v)))] (apply xml/element tag attrs content))) (defn record->xml [rec] (xml/emit-str (record->xml-data rec))) (defn record->json [rec] (json/generate-string rec)) </code></pre> Usage: <pre><code>> (def bob (Person. "Bob" 24 "New York")) #'user/bob > (println (record->xml bob)) <?xml version="1.0" encoding="UTF-8"?><person age="24" name="Bob"><hometown>New York</hometown></person> nil > (println (record->json bob)) {"name":"Bob","age":24,"hometown":"New York"} nil > (println (record->xml (Animal. "Fido" "Bark!"))) <?xml version="1.0" encoding="UTF-8"?><animal name="Fido"><sound>Bark!</sound></animal> nil </code></pre> A macro could be created to define a record and its XML attributes in a singe statement. E.g., <pre><code>(defrecord-xml Person [^:xml-attr name ^:xml-attr age hometown]) </code></pre>
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1. POsupport both xml and json REST response in clojure
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1. USJustin Kramer
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1. USJustin Kramer
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1. POsupport both xml and json REST response in clojure
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1. COvery nice, thanks.
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