GitHub - jaystack/odata-v4-server: With JayStack OData v4 Server you can build your own data endpoints without the hassle of implementing any protocol-level code. This framework binds OData v4 requests to your annotated controller functions, and compiles OData v4 compatible response. Clients can access services through OData-compliant HTTP requests. We recommend the JayData library for consuming OData v4 APIs.

OData V4 server for node.js

Features

OASIS Standard OData Version 4.0 server
usable as a standalone server, as an Express router, as a node.js stream or as a library
expose service document and service metadata - $metadata
setup metadata using decorators or metadata JSON
supported data types are Edm primitives, complex types, navigation properties
support create, read, update, and delete entity sets, action imports, function imports, collection and entity bound actions and functions
support for full OData query language using odata-v4-parser
- filtering entities - $filter
- sorting - $orderby
- paging - $skip and $top
- projection of entities - $select
- expanding entities - $expand
- $count
support sync and async controller functions
support async controller functions using Promise, async/await or ES6 generator functions
support result streaming
support media entities

Controller and server functions parameter injection decorators

@odata.key
@odata.filter
@odata.query
@odata.context
@odata.body
@odata.result
@odata.stream

Example Northwind server

export class ProductsController extends ODataController{
    @odata.GET
    find(@odata.filter filter:ODataQuery){
        if (filter) return products.filter(createFilter(filter));
        return products;
    }

    @odata.GET
    findOne(@odata.key key:string){
        return products.filter(product => product._id == key)[0];
    }

    @odata.POST
    insert(@odata.body product:any){
        product._id = new ObjectID().toString();
        products.push(product);
        return product;
    }

    @odata.PATCH
    update(@odata.key key:string, @odata.body delta:any){
        let product = products.filter(product => product._id == key)[0];
        for (let prop in delta){
            product[prop] = delta[prop];
        }
    }

    @odata.DELETE
    remove(@odata.key key:string){
        products.splice(products.indexOf(products.filter(product => product._id == key)[0]), 1);
    }
}

export class CategoriesController extends ODataController{
    @odata.GET
    find(@odata.filter filter:ODataQuery){
        if (filter) return categories.filter(createFilter(filter));
        return categories;
    }

    @odata.GET
    findOne(@odata.key key:string){
        return categories.filter(category => category._id == key)[0];
    }

    @odata.POST
    insert(@odata.body category:any){
        category._id = new ObjectID().toString();
        categories.push(category);
        return category;
    }

    @odata.PATCH
    update(@odata.key key:string, @odata.body delta:any){
        let category = categories.filter(category => category._id == key)[0];
        for (let prop in delta){
            category[prop] = delta[prop];
        }
    }

    @odata.DELETE
    remove(@odata.key key:string){
        categories.splice(categories.indexOf(categories.filter(category => category._id == key)[0]), 1);
    }
}

@odata.cors
@odata.controller(ProductsController, true)
@odata.controller(CategoriesController, true)
export class NorthwindODataServer extends ODataServer{}
NorthwindODataServer.create("/odata", 3000);