Update: we’ve created JaySvcUtil for node, which is our recommended tool to generate JavaScript data model from OData v4 endpoints. Read this article below only if you would like to generate data model from OData v2/v3 endpoints.
JaySvcUtil.exe is a command line tool that downloads an oData service definition ($metadata) and creates a full featured JayData / JavaScript client environment by generating the necessary boilerplate code for you. All you need to do is to include the generated context file and you can start using the OData service with the high level, JavaScript optimized JayData API that supports JavaScript Language Query (JSLQ) and crud operations.
If you are a data API developer you can distribute the generated context and let your users handle data with a manner.
As an example, we will use the Northwind database made available online for testing purposes by Microsoft.
C:\jaydata>JaySvcUtil.exe –-metadataUri http://services.odata.org/Northwind/Northwind.svc/$metadata
–out northwind.js –namespace Northwind
The resulting northwind.js file is included here for reference:
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//////////////////////////////////////////////////////////////////////////////////////// ////// Autogenerated - by JaySvcUtil do not modify or be prepared ////// You will need to inlucde jquery manually to have this working (function(global, $data, undefined) { function registerEdmTypes() { function Edm_Boolean() { }; $data.Container.registerType('Edm.Boolean', Edm_Boolean); $data.Container.mapType(Edm_Boolean, $data.Boolean); function Edm_Binary() { }; $data.Container.registerType('Edm.Binary', Edm_Binary); $data.Container.mapType(Edm_Binary, $data.Blob); function Edm_DateTime() { }; $data.Container.registerType('Edm.DateTime', Edm_DateTime); $data.Container.mapType(Edm_DateTime, $data.Date); function Edm_DateTimeOffset() { }; $data.Container.registerType('Edm.DateTimeOffset', Edm_DateTimeOffset); $data.Container.mapType(Edm_DateTimeOffset, $data.Integer); function Edm_Time() { }; $data.Container.registerType('Edm.Time', Edm_Time); $data.Container.mapType(Edm_Time, $data.Integer); function Edm_Decimal() { }; $data.Container.registerType('Edm.Decimal', Edm_Decimal); $data.Container.mapType(Edm_Decimal, $data.Number); function Edm_Single() { }; $data.Container.registerType('Edm.Single', Edm_Single); $data.Container.mapType(Edm_Single, $data.Number); function Edm_Double() { }; $data.Container.registerType('Edm.Double', Edm_Double); $data.Container.mapType(Edm_Double, $data.Number); function Edm_Guid() { }; $data.Container.registerType('Edm.Guid', Edm_Guid); $data.Container.mapType(Edm_Guid, $data.String); function Edm_Int16() { }; $data.Container.registerType('Edm.Int16', Edm_Int16); $data.Container.mapType(Edm_Int16, $data.Integer); function Edm_Int32() { }; $data.Container.registerType('Edm.Int32', Edm_Int32); $data.Container.mapType(Edm_Int32, $data.Integer); function Edm_Int64() { }; $data.Container.registerType('Edm.Int64', Edm_Int64); $data.Container.mapType(Edm_Int64, $data.Integer); function Edm_Byte() { }; $data.Container.registerType('Edm.Byte', Edm_Byte); $data.Container.mapType(Edm_Byte, $data.Integer); function Edm_String() { }; $data.Container.registerType('Edm.String', Edm_String); $data.Container.mapType(Edm_String, $data.String); }; registerEdmTypes(); $data.Entity.extend('NorthwindModel.Category', { 'CategoryID': { key:true,dataType:'Edm.Int32',nullable:false,required:true,computed:true }, 'CategoryName': { dataType:'Edm.String',nullable:false,required:true,maxLength:15 }, 'Description': { dataType:'Edm.String',nullable:true,maxLength:Max }, 'Picture': { dataType:'Edm.Binary',nullable:true,maxLength:Max }, 'Products': { dataType:'Array',elementType:'NorthwindModel.Product',navigationProperty:'Category' } }); $data.Entity.extend('NorthwindModel.CustomerDemographic', { 'CustomerTypeID': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:10 }, 'CustomerDesc': { dataType:'Edm.String',nullable:true,maxLength:Max }, 'Customers': { dataType:'Array',elementType:'NorthwindModel.Customer',navigationProperty:'CustomerDemographics' } }); $data.Entity.extend('NorthwindModel.Customer', { 'CustomerID': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:5 }, 'CompanyName': { dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'ContactName': { dataType:'Edm.String',nullable:true,maxLength:30 }, 'ContactTitle': { dataType:'Edm.String',nullable:true,maxLength:30 }, 'Address': { dataType:'Edm.String',nullable:true,maxLength:60 }, 'City': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'Region': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'PostalCode': { dataType:'Edm.String',nullable:true,maxLength:10 }, 'Country': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'Phone': { dataType:'Edm.String',nullable:true,maxLength:24 }, 'Fax': { dataType:'Edm.String',nullable:true,maxLength:24 }, 'Orders': { dataType:'Array',elementType:'NorthwindModel.Order',navigationProperty:'Customers' }, 'CustomerDemographics': { dataType:'Array',elementType:'NorthwindModel.CustomerDemographic',navigationProperty:'Customers' } }); $data.Entity.extend('NorthwindModel.Employee', { 'EmployeeID': { key:true,dataType:'Edm.Int32',nullable:false,required:true,computed:true }, 'LastName': { dataType:'Edm.String',nullable:false,required:true,maxLength:20 }, 'FirstName': { dataType:'Edm.String',nullable:false,required:true,maxLength:10 }, 'Title': { dataType:'Edm.String',nullable:true,maxLength:30 }, 'TitleOfCourtesy': { dataType:'Edm.String',nullable:true,maxLength:25 }, 'BirthDate': { dataType:'Edm.DateTime',nullable:true }, 'HireDate': { dataType:'Edm.DateTime',nullable:true }, 'Address': { dataType:'Edm.String',nullable:true,maxLength:60 }, 'City': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'Region': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'PostalCode': { dataType:'Edm.String',nullable:true,maxLength:10 }, 'Country': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'HomePhone': { dataType:'Edm.String',nullable:true,maxLength:24 }, 'Extension': { dataType:'Edm.String',nullable:true,maxLength:4 }, 'Photo': { dataType:'Edm.Binary',nullable:true,maxLength:Max }, 'Notes': { dataType:'Edm.String',nullable:true,maxLength:Max }, 'ReportsTo': { dataType:'Edm.Int32',nullable:true }, 'PhotoPath': { dataType:'Edm.String',nullable:true,maxLength:255 }, 'Employees1': { dataType:'Array',elementType:'NorthwindModel.Employee',navigationProperty:'Employee1' }, 'Employee1': { dataType:'NorthwindModel.Employee',navigationProperty:'Employees1' }, 'Orders': { dataType:'Array',elementType:'NorthwindModel.Order',navigationProperty:'Employee1' }, 'Territories': { dataType:'Array',elementType:'NorthwindModel.Territory',navigationProperty:'Employee1' } }); $data.Entity.extend('NorthwindModel.Order_Detail', { 'OrderID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'ProductID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'UnitPrice': { dataType:'Edm.Decimal',nullable:false,required:true }, 'Quantity': { dataType:'Edm.Int16',nullable:false,required:true }, 'Discount': { dataType:'Edm.Single',nullable:false,required:true }, 'Order': { dataType:'NorthwindModel.Order',required:true,navigationProperty:'Order_Details' }, 'Product': { dataType:'NorthwindModel.Product',required:true,navigationProperty:'Order_Details' } }); $data.Entity.extend('NorthwindModel.Order', { 'OrderID': { key:true,dataType:'Edm.Int32',nullable:false,required:true,computed:true }, 'CustomerID': { dataType:'Edm.String',nullable:true,maxLength:5 }, 'EmployeeID': { dataType:'Edm.Int32',nullable:true }, 'OrderDate': { dataType:'Edm.DateTime',nullable:true }, 'RequiredDate': { dataType:'Edm.DateTime',nullable:true }, 'ShippedDate': { dataType:'Edm.DateTime',nullable:true }, 'ShipVia': { dataType:'Edm.Int32',nullable:true }, 'Freight': { dataType:'Edm.Decimal',nullable:true }, 'ShipName': { dataType:'Edm.String',nullable:true,maxLength:40 }, 'ShipAddress': { dataType:'Edm.String',nullable:true,maxLength:60 }, 'ShipCity': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'ShipRegion': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'ShipPostalCode': { dataType:'Edm.String',nullable:true,maxLength:10 }, 'ShipCountry': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'Customer': { dataType:'NorthwindModel.Customer',navigationProperty:'Orders' }, 'Employee': { dataType:'NorthwindModel.Employee',navigationProperty:'Orders' }, 'Order_Details': { dataType:'Array',elementType:'NorthwindModel.Order_Detail',navigationProperty:'Orders' }, 'Shipper': { dataType:'NorthwindModel.Shipper',navigationProperty:'Orders' } }); $data.Entity.extend('NorthwindModel.Product', { 'ProductID': { key:true,dataType:'Edm.Int32',nullable:false,required:true,computed:true }, 'ProductName': { dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'SupplierID': { dataType:'Edm.Int32',nullable:true }, 'CategoryID': { dataType:'Edm.Int32',nullable:true }, 'QuantityPerUnit': { dataType:'Edm.String',nullable:true,maxLength:20 }, 'UnitPrice': { dataType:'Edm.Decimal',nullable:true }, 'UnitsInStock': { dataType:'Edm.Int16',nullable:true }, 'UnitsOnOrder': { dataType:'Edm.Int16',nullable:true }, 'ReorderLevel': { dataType:'Edm.Int16',nullable:true }, 'Discontinued': { dataType:'Edm.Boolean',nullable:false,required:true }, 'Category': { dataType:'NorthwindModel.Category',navigationProperty:'Products' }, 'Order_Details': { dataType:'Array',elementType:'NorthwindModel.Order_Detail',navigationProperty:'Products' }, 'Supplier': { dataType:'NorthwindModel.Supplier',navigationProperty:'Products' } }); $data.Entity.extend('NorthwindModel.Region', { 'RegionID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'RegionDescription': { dataType:'Edm.String',nullable:false,required:true,maxLength:50 }, 'Territories': { dataType:'Array',elementType:'NorthwindModel.Territory',navigationProperty:'Region' } }); $data.Entity.extend('NorthwindModel.Shipper', { 'ShipperID': { key:true,dataType:'Edm.Int32',nullable:false,required:true,computed:true }, 'CompanyName': { dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'Phone': { dataType:'Edm.String',nullable:true,maxLength:24 }, 'Orders': { dataType:'Array',elementType:'NorthwindModel.Order',navigationProperty:'Shipper' } }); $data.Entity.extend('NorthwindModel.Supplier', { 'SupplierID': { key:true,dataType:'Edm.Int32',nullable:false,required:true,computed:true }, 'CompanyName': { dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'ContactName': { dataType:'Edm.String',nullable:true,maxLength:30 }, 'ContactTitle': { dataType:'Edm.String',nullable:true,maxLength:30 }, 'Address': { dataType:'Edm.String',nullable:true,maxLength:60 }, 'City': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'Region': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'PostalCode': { dataType:'Edm.String',nullable:true,maxLength:10 }, 'Country': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'Phone': { dataType:'Edm.String',nullable:true,maxLength:24 }, 'Fax': { dataType:'Edm.String',nullable:true,maxLength:24 }, 'HomePage': { dataType:'Edm.String',nullable:true,maxLength:Max }, 'Products': { dataType:'Array',elementType:'NorthwindModel.Product',navigationProperty:'Supplier' } }); $data.Entity.extend('NorthwindModel.Territory', { 'TerritoryID': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:20 }, 'TerritoryDescription': { dataType:'Edm.String',nullable:false,required:true,maxLength:50 }, 'RegionID': { dataType:'Edm.Int32',nullable:false,required:true }, 'Region': { dataType:'NorthwindModel.Region',required:true,navigationProperty:'Territories' }, 'Employees': { dataType:'Array',elementType:'NorthwindModel.Employee',navigationProperty:'Territories' } }); $data.Entity.extend('NorthwindModel.Alphabetical_list_of_product', { 'ProductID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'ProductName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'SupplierID': { dataType:'Edm.Int32',nullable:true }, 'CategoryID': { dataType:'Edm.Int32',nullable:true }, 'QuantityPerUnit': { dataType:'Edm.String',nullable:true,maxLength:20 }, 'UnitPrice': { dataType:'Edm.Decimal',nullable:true }, 'UnitsInStock': { dataType:'Edm.Int16',nullable:true }, 'UnitsOnOrder': { dataType:'Edm.Int16',nullable:true }, 'ReorderLevel': { dataType:'Edm.Int16',nullable:true }, 'Discontinued': { key:true,dataType:'Edm.Boolean',nullable:false,required:true }, 'CategoryName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:15 } }); $data.Entity.extend('NorthwindModel.Category_Sales_for_1997', { 'CategoryName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:15 }, 'CategorySales': { dataType:'Edm.Decimal',nullable:true } }); $data.Entity.extend('NorthwindModel.Current_Product_List', { 'ProductID': { key:true,dataType:'Edm.Int32',nullable:false,required:true,computed:true }, 'ProductName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 } }); $data.Entity.extend('NorthwindModel.Customer_and_Suppliers_by_City', { 'City': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'CompanyName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'ContactName': { dataType:'Edm.String',nullable:true,maxLength:30 }, 'Relationship': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:9 } }); $data.Entity.extend('NorthwindModel.Invoice', { 'ShipName': { dataType:'Edm.String',nullable:true,maxLength:40 }, 'ShipAddress': { dataType:'Edm.String',nullable:true,maxLength:60 }, 'ShipCity': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'ShipRegion': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'ShipPostalCode': { dataType:'Edm.String',nullable:true,maxLength:10 }, 'ShipCountry': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'CustomerID': { dataType:'Edm.String',nullable:true,maxLength:5 }, 'CustomerName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'Address': { dataType:'Edm.String',nullable:true,maxLength:60 }, 'City': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'Region': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'PostalCode': { dataType:'Edm.String',nullable:true,maxLength:10 }, 'Country': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'Salesperson': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:31 }, 'OrderID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'OrderDate': { dataType:'Edm.DateTime',nullable:true }, 'RequiredDate': { dataType:'Edm.DateTime',nullable:true }, 'ShippedDate': { dataType:'Edm.DateTime',nullable:true }, 'ShipperName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'ProductID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'ProductName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'UnitPrice': { key:true,dataType:'Edm.Decimal',nullable:false,required:true }, 'Quantity': { key:true,dataType:'Edm.Int16',nullable:false,required:true }, 'Discount': { key:true,dataType:'Edm.Single',nullable:false,required:true }, 'ExtendedPrice': { dataType:'Edm.Decimal',nullable:true }, 'Freight': { dataType:'Edm.Decimal',nullable:true } }); $data.Entity.extend('NorthwindModel.Order_Details_Extended', { 'OrderID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'ProductID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'ProductName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'UnitPrice': { key:true,dataType:'Edm.Decimal',nullable:false,required:true }, 'Quantity': { key:true,dataType:'Edm.Int16',nullable:false,required:true }, 'Discount': { key:true,dataType:'Edm.Single',nullable:false,required:true }, 'ExtendedPrice': { dataType:'Edm.Decimal',nullable:true } }); $data.Entity.extend('NorthwindModel.Order_Subtotal', { 'OrderID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'Subtotal': { dataType:'Edm.Decimal',nullable:true } }); $data.Entity.extend('NorthwindModel.Orders_Qry', { 'OrderID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'CustomerID': { dataType:'Edm.String',nullable:true,maxLength:5 }, 'EmployeeID': { dataType:'Edm.Int32',nullable:true }, 'OrderDate': { dataType:'Edm.DateTime',nullable:true }, 'RequiredDate': { dataType:'Edm.DateTime',nullable:true }, 'ShippedDate': { dataType:'Edm.DateTime',nullable:true }, 'ShipVia': { dataType:'Edm.Int32',nullable:true }, 'Freight': { dataType:'Edm.Decimal',nullable:true }, 'ShipName': { dataType:'Edm.String',nullable:true,maxLength:40 }, 'ShipAddress': { dataType:'Edm.String',nullable:true,maxLength:60 }, 'ShipCity': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'ShipRegion': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'ShipPostalCode': { dataType:'Edm.String',nullable:true,maxLength:10 }, 'ShipCountry': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'CompanyName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'Address': { dataType:'Edm.String',nullable:true,maxLength:60 }, 'City': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'Region': { dataType:'Edm.String',nullable:true,maxLength:15 }, 'PostalCode': { dataType:'Edm.String',nullable:true,maxLength:10 }, 'Country': { dataType:'Edm.String',nullable:true,maxLength:15 } }); $data.Entity.extend('NorthwindModel.Product_Sales_for_1997', { 'CategoryName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:15 }, 'ProductName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'ProductSales': { dataType:'Edm.Decimal',nullable:true } }); $data.Entity.extend('NorthwindModel.Products_Above_Average_Price', { 'ProductName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'UnitPrice': { dataType:'Edm.Decimal',nullable:true } }); $data.Entity.extend('NorthwindModel.Products_by_Category', { 'CategoryName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:15 }, 'ProductName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'QuantityPerUnit': { dataType:'Edm.String',nullable:true,maxLength:20 }, 'UnitsInStock': { dataType:'Edm.Int16',nullable:true }, 'Discontinued': { key:true,dataType:'Edm.Boolean',nullable:false,required:true } }); $data.Entity.extend('NorthwindModel.Sales_by_Category', { 'CategoryID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'CategoryName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:15 }, 'ProductName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'ProductSales': { dataType:'Edm.Decimal',nullable:true } }); $data.Entity.extend('NorthwindModel.Sales_Totals_by_Amount', { 'SaleAmount': { dataType:'Edm.Decimal',nullable:true }, 'OrderID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'CompanyName': { key:true,dataType:'Edm.String',nullable:false,required:true,maxLength:40 }, 'ShippedDate': { dataType:'Edm.DateTime',nullable:true } }); $data.Entity.extend('NorthwindModel.Summary_of_Sales_by_Quarter', { 'ShippedDate': { dataType:'Edm.DateTime',nullable:true }, 'OrderID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'Subtotal': { dataType:'Edm.Decimal',nullable:true } }); $data.Entity.extend('NorthwindModel.Summary_of_Sales_by_Year', { 'ShippedDate': { dataType:'Edm.DateTime',nullable:true }, 'OrderID': { key:true,dataType:'Edm.Int32',nullable:false,required:true }, 'Subtotal': { dataType:'Edm.Decimal',nullable:true } }); $data.EntityContext.extend('ODataWeb.Northwind.Model.NorthwindEntities', { Categories: { dataType: $data.EntitySet, elementType: NorthwindModel.Category }, CustomerDemographics: { dataType: $data.EntitySet, elementType: NorthwindModel.CustomerDemographic }, Customers: { dataType: $data.EntitySet, elementType: NorthwindModel.Customer }, Employees: { dataType: $data.EntitySet, elementType: NorthwindModel.Employee }, Order_Details: { dataType: $data.EntitySet, elementType: NorthwindModel.Order_Detail }, Orders: { dataType: $data.EntitySet, elementType: NorthwindModel.Order }, Products: { dataType: $data.EntitySet, elementType: NorthwindModel.Product }, Regions: { dataType: $data.EntitySet, elementType: NorthwindModel.Region }, Shippers: { dataType: $data.EntitySet, elementType: NorthwindModel.Shipper }, Suppliers: { dataType: $data.EntitySet, elementType: NorthwindModel.Supplier }, Territories: { dataType: $data.EntitySet, elementType: NorthwindModel.Territory }, Alphabetical_list_of_products: { dataType: $data.EntitySet, elementType: NorthwindModel.Alphabetical_list_of_product }, Category_Sales_for_1997: { dataType: $data.EntitySet, elementType: NorthwindModel.Category_Sales_for_1997 }, Current_Product_Lists: { dataType: $data.EntitySet, elementType: NorthwindModel.Current_Product_List }, Customer_and_Suppliers_by_Cities: { dataType: $data.EntitySet, elementType: NorthwindModel.Customer_and_Suppliers_by_City }, Invoices: { dataType: $data.EntitySet, elementType: NorthwindModel.Invoice }, Order_Details_Extendeds: { dataType: $data.EntitySet, elementType: NorthwindModel.Order_Details_Extended }, Order_Subtotals: { dataType: $data.EntitySet, elementType: NorthwindModel.Order_Subtotal }, Orders_Qries: { dataType: $data.EntitySet, elementType: NorthwindModel.Orders_Qry }, Product_Sales_for_1997: { dataType: $data.EntitySet, elementType: NorthwindModel.Product_Sales_for_1997 }, Products_Above_Average_Prices: { dataType: $data.EntitySet, elementType: NorthwindModel.Products_Above_Average_Price }, Products_by_Categories: { dataType: $data.EntitySet, elementType: NorthwindModel.Products_by_Category }, Sales_by_Categories: { dataType: $data.EntitySet, elementType: NorthwindModel.Sales_by_Category }, Sales_Totals_by_Amounts: { dataType: $data.EntitySet, elementType: NorthwindModel.Sales_Totals_by_Amount }, Summary_of_Sales_by_Quarters: { dataType: $data.EntitySet, elementType: NorthwindModel.Summary_of_Sales_by_Quarter }, Summary_of_Sales_by_Years: { dataType: $data.EntitySet, elementType: NorthwindModel.Summary_of_Sales_by_Year } }); ODataWeb.Northwind.Model.context = new ODataWeb.Northwind.Model.NorthwindEntities( { name:'oData', oDataServiceHost: 'http://services.odata.org/Northwind/Northwind.svc' }); })(window, $data); |
From now on you only need an html client page that includes both jqeury, JayData.js and the newly forged Northwind.js to let the miracle begin. 
JaySvcUtil.exe command line parameters
| parameter | description | default value |
| metadataUri / m | Required. The uri of the oData $metadata definition. Can be an online resource or a local file as well | |
| out / o | The name of the generated output file. | JayDataContext.js |
| namespace | The namespace of the generated JayData EntitContext class. | Taken from the service metadata. |
| contextBaseClass | The name of the base class for the generated entity context. | $data.EntityContext |
| entityBaseClass | The name of the base class for the generated entity types. | $data.Entity |
| entitySetBaseClass | The name of the base class for the generated entity sets. | $data.EntitySet |
| collectionBaseClass | The name of the base class for the generated entity sets. Default is | Array |
| autoCreateContext | Create an instance of the context with default parameters. |
true |
| contextInstanceName | The name of the automatically generated context instance under the context namespace. Default is | context |
| help | Displays parameter options. |
