Seneca leveldb store

seneca-level-store - a Seneca plugin

A storage engine that uses leveldb to persist data. It may also be used as an example on how to implement a storage plugin for Seneca using an underlying key-value store.

Current Version: 0.2.3

Tested on: Seneca 0.6.5

If you're using this module, and need help, you can:

To install, simply use npm. Remember you will need to install Seneca.js seperately.

npm install seneca
npm install seneca-level-store

To run tests, simply use npm:

npm run test
var seneca = require('seneca')()
seneca.use('level-store', {
  folder: 'db'
  var apple = seneca.make$('fruit')  = 'Pink Lady'
  apple.price = 0.99$(function (err,apple) {
    console.log( " = " +  )

You don't use this module directly. It provides an underlying data storage engine for the Seneca entity API:

var entity = seneca.make$('typename')
entity.someproperty = "something"
entity.anotherproperty = 100$(function (errentity) { ... })
entity.load$({id: ... }, function (errentity) { ... })
entity.list$({property: ... }, function (errentity) { ... })
entity.remove$({id: ... }, function (errentity) { ... })

The standard Seneca query format is supported:

  • .list$({f1:v1, f2:v2, ...}) implies pseudo-query f1==v1 AND f2==v2, ....

  • .list$({f1:v1,...}, {sort$:{field1:1}}) means sort by f1, ascending.

  • .list$({f1:v1,...}, {sort$:{field1:-1}}) means sort by f1, descending.

  • .list$({f1:v1,...}, {limit$:10}) means only return 10 results.

  • .list$({f1:v1,...}, {skip$:5}) means skip the first 5.

  • .list$({f1:v1,...}, {fields$:['fd1','f2']}) means only return the listed fields.

Note: you can use sort$, limit$, skip$ and fields$ together.

As with all seneca stores, you can access the native driver, in this case, the levelup db object using entity.native$(function (err, db) {...}).

We encourage participation. If you feel you can help in any way, be it with examples, extra testing, or new features please get in touch.

Copyright Richard Rodger 2015, Licensed under MIT.