From 38bd4b859f99065ee183e6d35e960889c01bef32 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=2EFernando=20S=C3=A1nchez?= <balkian@gmail.com>
Date: Thu, 15 Mar 2012 16:09:37 +0100
Subject: [PATCH] Converted the dbpedia example to a generic lib

---
 README.md                 |  2 +-
 index.js                  |  2 ++
 lib/hook.io-sparql.coffee | 39 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 42 insertions(+), 1 deletion(-)
 create mode 100644 index.js
 create mode 100644 lib/hook.io-sparql.coffee

diff --git a/README.md b/README.md
index ecf03b8..1be2d19 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ Description
 ---------------------
 This module is part of the Web4.0 project.
 
-So far, it performs basic queries to dbpedia, but the same code could be use to query any other sparql endpoint.
+You can use it to query any sparql endpoint. So far, dbpedia and sindice.com have been tested.
 
 Dependencies
 --------------------
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..27eef1f
--- /dev/null
+++ b/index.js
@@ -0,0 +1,2 @@
+require('coffee-script')
+require('./lib/hook.io-sparql')
diff --git a/lib/hook.io-sparql.coffee b/lib/hook.io-sparql.coffee
new file mode 100644
index 0000000..dfabd9f
--- /dev/null
+++ b/lib/hook.io-sparql.coffee
@@ -0,0 +1,39 @@
+# Imports
+sparql = require 'sparql'
+Hook = require('hook.io').Hook
+
+examplequery = "
+        SELECT DISTINCT ?label ?abstract ?population
+        WHERE { ?place rdf:type dbpedia-owl:PopulatedPlace.
+                ?place foaf:name ?label.
+                ?place dbpprop:population ?population.
+                OPTIONAL{
+                    ?place dbpedia-owl:abstract ?abstract.
+                    FILTER langMatches( lang(?abstract), 'en')
+                }
+        } LIMIT 10"
+        
+
+class SPARQLHook extends Hook
+    constructor: (options) ->
+        self = this
+        Hook.call(self, options)
+        @client = new sparql.Client options.url
+
+        self.on 'hook::ready', ->
+            self.on '*::query', (data,fn) ->
+                @queryDBPedia data , (res) ->
+                    console.log res
+                    fn res
+        console.log "Created"
+
+
+    query: (query, cb) ->
+        console.log ">>Going to query"
+        @client.rows  query, (err, res) ->
+                cb res
+
+    addPreffix: (key,url) ->
+        @client.prefix_map[key] = url
+
+exports.SPARQLHook = SPARQLHook