AtomicRecord

AtomicRecord is a super lightweight node.js ActiveRecord ORM layer for FoundationDB.

This module is still early alpha and work is in progress. All contributions are welcome.

Example Usage

Create AtomicRecord Class

var AtomicRecord = require('atomicrecord');
 
var Person = AtomicRecord({
  database: 'myDatabaseName',
  dataset: 'people',
  partition: false,
 
  primaryKey: {
    getKeyFields: function () {
      return ['timestamp', 'id'];
    },
      
    getDirectoryFields: function () {
      return ['region'];
    }
  },
    
  fields: {
    firstName: 'f',
    lastName: 'l',
    gender: 'g',
    age: 'a',
    region: 'r',
    contacts: 'c',
    enabled: 'e',
    timestamp: 't'
  }
});

Transactional Save

function complete(err, person) {
    if (err) {
        console.error(err);
    }
    else {
        console.log('transaction complete: person saved', person);
    }
}
 
function transaction(tr, callback) {
    // create person instance
    var person = new Person();
 
    person.firstName = 'John';
    person.lastName = 'Smith';
    person.gender = 'M'
    person.age = 30
    person.region = 'USA';
    person.contacts = ['[phone]', '[phone]'];
    person.timestamp = new Date();
 
    person.save(tr, callback);
}
 
Person.doTransaction(transaction, complete);

Non-Transactional Save

// create person instance
var person = new Person();
 
person.firstName = 'John';
person.lastName = 'Smith';
person.gender = 'M'
person.age = 30
person.region = 'USA';
person.contacts = ['[phone]', '[phone]'];
person.timestamp = new Date();
 
person.save(function (err, p) {
  if (err) {
    console.error(err);
  }
  else {
    console.log('person saved', p);
  }
});

Transactional AtomicQueue Batch Save

function complete(err) {
  if (err) {
    console.error(err);
  }
  else {
    console.log('transaction complete');
  }
}
 
function transaction(tr, callback) {
    // create person instances with initializers
 
    var john = new Person({
        firstName: 'John',
        lastName: 'Smith',
        gender: 'M',
        age: 30,
        region: 'USA',
        contacts: ['[phone]', '[phone]'],
        timestamp: new Date()
    });
 
    var sarah = new Person({
        firstName: 'Sarah',
        lastName: 'Jones',
        gender: 'F',
        age: 25,
        region: 'Europe',
        contacts: '[phone]',
        timestamp: new Date()
    });
 
    var people = [john, sarah];
 
    // batch save every 1sec
    var queue = new AtomicRecord.Queue(people);
 
    queue.on('saved', function (count) {
      console.log('saved', count);
    });
 
    queue.on('error', function (err) {
      console.error(err);
    });
 
    queue.on('recordsaved', function (record) {
        console.log('record saved');
      console.log('unaliased document', record.toDocument());
      console.log();
      console.log('aliased document', record.toDocument(true));
      console.log();
    });
 
    queue.save(tr, callback);
}
 
Person.doTransaction(transaction, complete);

Non-Transactional AtomicQueue Batch Save

// batch save every 1sec
var queue = new AtomicRecord.Queue(people, { batchSaveDelay: 1000 });
 
queue.on('saved', function (count) {
  console.log('saved', count);
});
 
queue.on('error', function (err) {
  console.error(err);
});
 
queue.on('recordsaved', function (record) {
    console.log('record', record);
});
 
// continuously push records into the queue for processing
for (var i = 0; i < 10000; i++) {
    queue.add(people[i]); // people is a pseudo-array
}

Transactional Find

function complete(err) {
    if (err) {
        console.error(err);
    }
    else {
        console.log('transaction complete')
    }
}
 
function transaction(tr, callback) {
  var finder = Person.find({ region: 'USA' });
  
  finder.on('data', function (data) {
    for (var i = 0; i < data.length; i++) {
      var record = data[i];
      console.log('keySize', record.keySize);
      console.log('valueSize', record.valueSize);
      console.log('record', record);
      console.log()
    }
  });
    
  finder.on('error', function (err) {
    console.error('err', err);
  });
    
  finder.on('continue', function () {
    tr.options.setReadYourWritesDisable();
  });
    
  finder.on('end', function () {
    console.log('end');
    callback(null);
  });
  
  finder.execute(tr, 'array');
}
 
Person.doTransaction(transaction, complete);

Non-Transactional Find

var finder = Person.find({ region: 'USA' });
 
finder.on('data', function (data) {
  for (var i = 0; i < data.length; i++) {
      var record = data[i];
      console.log('keySize', record.keySize);
      console.log('valueSize', record.valueSize);
      console.log('record', record);
      console.log()
    }
});
  
finder.on('error', function (err) {
  console.error('err', err);
});
  
finder.on('end', function () {
  console.log('end');
  callback(null);
});
 
finder.execute('array');

Roadmap

More comments and elaborate on README

Finalize Indexing

Polish the Finder class and iteratorTypes

Relational data

Installation

npm install atomicrecord

License

(The MIT License)

Copyright (c) frisB.com <[e-mail]>

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