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mongodbtest.js
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mongodbtest.js
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var MongoClient = require('mongodb').MongoClient
, BSON = require('mongodb').BSONPure
, assert = require('assert')
, CmpBitVec = require('./CmpBitVec');
function ArrayBuffertoBuffer(ab) {
return new Buffer(new Uint8Array(ab));
}
function BuffertoArrayBuffer(buffer) {
var ab = new ArrayBuffer(buffer.length);
var view = new Uint8Array(ab);
for (var i = 0; i < buffer.length; ++i) {
view[i] = buffer[i];
}
return ab;
}
var v = new CmpBitVec();
v.appendFill0(10);
v.appendFill1(100);
v.appendFill0(10);
console.log(v.toString());
var buffer = ArrayBuffertoBuffer(v.saveToArrayBuffer());
var bsonbin = new BSON.Binary(buffer);
// Connect using the connection string
MongoClient.connect("mongodb://localhost:27017/test", function(err, db) {
assert.equal(null, err);
db.collection('bvec', function(err,collection) {
collection.remove(function(err, result) {
collection.insert({'binary':bsonbin}, function(err, doc) {
collection.findOne(function(err, document) {
var v2 = new CmpBitVec();
var ab = BuffertoArrayBuffer(document.binary.buffer);
v2.loadFromArrayBuffer(ab);
console.log(v2.toString());
collection.remove(function(err, collection) {
db.close();
});
});
});
});
});
});