# Query-Engine [](http://travis-ci.org/bevry/query-engine "Check this project's build status on TravisCI") [](https://npmjs.org/package/query-engine "View this project on NPM") [](https://www.gittip.com/bevry/ "Donate weekly to this project using Gittip") [](http://flattr.com/thing/344188/balupton-on-Flattr "Donate monthly to this project using Flattr") [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=QB8GQPZAH84N6 "Donate once-off to this project using Paypal") Query-Engine is a NoSQL and MongoDb compliant query engine. It can run on the server-side with Node.js, or on the client-side within web browsers QueryEngine provides extensive Querying, Filtering, and Searching abilities for [Backbone.js Collections](http://documentcloud.github.com/backbone/#Collection) as well as JavaScript arrays and objects. The Backbone.js and Underscore dependencies are optional. ## Features * includes a [live interactive demos](http://bevry.github.com/query-engine/) with several examples, [wiki documentation](https://github.com/bevry/query-engine/wiki/Using) and [source-code documentation](https://github.com/bevry/query-engine/blob/master/lib/query-engine.coffee#files) * runs on [node.js](http://nodejs.org/) and in the browser * supports [NoSQL](http://www.mongodb.org/display/DOCS/Advanced+Queries) queries (like [MongoDB](http://www.mongodb.org/)) * supports filters (applying a filter function to a collection) * supports search strings (useful for turning search input fields into useful queries) * supports pills for search strings (e.g. `author:ben priority:important`) * supports optional live collections (when a model is changed, added or removed, it can automatically be tested against the collections queries, filters, and search string, if it fails, remove it from the collection) * supports parent and child collections (when a parent collection has a model removed, it is removed from the child collection too, when a parent collection has a model added or changed, it is retested against the child collection) * actively maintained, supported, and implemented by several companies ## Compatability Tested and working against: - No library - [Backbone](http://backbonejs.org) v0.9.2, v0.9.9, v1.0.0, v1.1.0 - [Exoskeleton](http://exosjs.com/) v0.5.1 ## Using [View the Complete Query Engine Documentation on the Bevry Website](http://bevry.me/queryengine/guide) ## Install ### [Node](http://nodejs.org/) - Use: `require('query-engine')` - Install: `npm install --save query-engine` ### [Browserify](http://browserify.org/) - Use: `require('query-engine')` - Install: `npm install --save query-engine` - CDN URL: `//wzrd.in/bundle/query-engine@1.5.7` ### [Ender](http://ender.jit.su/) - Use: `require('query-engine')` - Install: `ender add query-engine` ### Direct - Use: `window.queryEngine` or `window.QueryEngine` whichever you prefer - CDN URL: `//bevry.github.io/query-engine/lib/query-engine.js` ## History [Discover the change history by heading on over to the `HISTORY.md` file.](https://github.com/bevry/query-engine/blob/master/HISTORY.md#files) ## Contribute [Discover how you can contribute by heading on over to the `CONTRIBUTING.md` file.](https://github.com/bevry/query-engine/blob/master/CONTRIBUTING.md#files) ## Backers ### Maintainers These amazing people are maintaining this project: - Benjamin Lupton (https://github.com/balupton) ### Sponsors These amazing people have contributed finances to this project: - BugHerd (http://bugherd.com/) Become a sponsor! [](https://www.gittip.com/bevry/ "Donate weekly to this project using Gittip") [](http://flattr.com/thing/344188/balupton-on-Flattr "Donate monthly to this project using Flattr") [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=QB8GQPZAH84N6 "Donate once-off to this project using Paypal") ### Contributors These amazing people have contributed code to this project: - [Andrew Shults](https://github.com/andrewjshults) — [view contributions](https://github.com/bevry/query-engine/commits?author=andrewjshults) - [Benjamin Lupton](https://github.com/balupton) — [view contributions](https://github.com/bevry/query-engine/commits?author=balupton) - [Farid Neshat](https://github.com/alFReD-NSH) — [view contributions](https://github.com/bevry/query-engine/commits?author=alFReD-NSH) - [Khalid Jebbari](https://github.com/DjebbZ) — [view contributions](https://github.com/bevry/query-engine/commits?author=DjebbZ) - [Nicholas Firth-McCoy](https://github.com/nfm) — [view contributions](https://github.com/bevry/query-engine/commits?author=nfm) [Become a contributor!](https://github.com/bevry/query-engine/blob/master/CONTRIBUTING.md#files) ## License Licensed under the incredibly [permissive](http://en.wikipedia.org/wiki/Permissive_free_software_licence) [MIT license](http://creativecommons.org/licenses/MIT/) Copyright © 2012+ Bevry Pty Ltd (http://bevry.me)
Copyright © 2011 Benjamin Lupton (http://balupton.com)