A simple search engine that runs on Node.JS, Express and MongoDB. It support basic document indexing and querying.

Features

• Multi-index search
• RESTful API for indexing and searching
• Replacable backend storage for indices (uses MongoDB out of the box)

Installation

npm install simple-search

Usage

You can use the search engine via a REST API using HTTP requests.

Indexing API

You can index a document using the index endpoint /index/<indexName>.

Example

$ curl -XPOST 'http://localhost:3000/index/myIndex/1' 
	-H "Content-Type: application/json" 
	-d '{"_body" : "This is an example doc."}'

Searching API

You can search the index using the index endpoint /search/<indexName>.

Example

$ curl -XGET 'http://localhost:3000/search/myIndex/?q=example%20document'

Custom Backend

The project works out of the box with MongoDB for inverted index creation. If you wish to use a different backend storage then you can do so by defining a custom index. All you need to do is create a new object that implements the following API:

add(indexName, docId, body, terms) - This function takes as arguments the index name, a document id, body and an array of terms which you can use to store this document in your custom index. It should return a Promise. retrieve(indexName, terms) - This function takes as arguments the index name and an array of query terms. You should retrieve and rank your docs using these terms. It should return a promise.

Finally, in the index.js you should replace the MongoIndex with your own. That's it.

Contributing

If you wish to contribute to the development of this project please fork and send your pull requests.

1. Fork the repo

• npm install to install the dependencies
• Install MongoDB (or your chosen backend system)
• npm start or nodemon index.js to start the search engine server

If you want to run the tests use npm test