some basic neo4j access from node

gistfile1.txt

var neo4j = require('neo4j');
var db = new neo4j.GraphDatabase('http://localhost:7474');

// an example of input
var data = [{"sentence":"Jetzt kann ich es testen.","words":[{"text":"Jetzt","baseForm":"jetzt","occurences":[{"start":0,"length":5}]},{"text":"kann","baseForm":"könenn","occurences":[{"start":6,"length":4}]},{"text":"ich","baseForm":"ich","occurences":[{"start":11,"length":3}]},{"text":"es","baseForm":"es","occurences":[{"start":15,"length":2}]},{"text":"testen","baseForm":"testen","occurences":[{"start":18,"length":6}]},{"text":".","baseForm":"","occurences":[{"start":24,"length":1}]}],"language":"de"},{"sentence":"Now I can test it.","words":[{"text":"Now","baseForm":"now","occurences":[{"start":0,"length":3}]},{"text":"I","baseForm":"I","occurences":[{"start":4,"length":1}]},{"text":"can","baseForm":"can","occurences":[{"start":6,"length":3}]},{"text":"test","baseForm":"test","occurences":[{"start":10,"length":4}]},{"text":"it","baseForm":"it","occurences":[{"start":15,"length":2}]},{"text":".","baseForm":"","occurences":[{"start":17,"length":1}]}],"language":"en"}];

data.forEach(function (d) {
  var luceneQuery = [
		"sentence:",
		JSON.stringify(d.sentence),
		" AND language:",
		JSON.stringify(d.language)
	].join("");

	db.queryNodeIndex("sentences", luceneQuery, function (err, result) {
		if (err) {
			console.log(err);
			return;
		}
		
		if (result.length == 0) {
			var node = db.createNode({ sentence: d.sentence, language: d.language });
			node.save(function (err, result) {
				if (err) {
					console.log(err);
					return;
				}
				
				node.index("sentences", "sentence", d.sentence, function (err, result) {
					if (err) {
						console.log(err);
						return;
					}
				});
				
				node.index("sentences", "language", d.language, function (err, result) {
					if (err) {
						console.log(err);
						return;
					}
				});
			});
		}
		
		if (result.length > 0) {
			console.log(result[0].data);
		
			// we already have a sentence like this, so let's reuse it
			
			// todo: should we remove the usages before we insert new ones ?
		}
	});
});