ODataContext

The ODataContent is an object that provides access to an entire OData service.

Included in: dx.mobile.js, dx.web.js, dx.viz.js, dx.viz-web.js, dx.all.js
Export: default
Type:

Object

This object creates several ODataStore instances. Each instance accesses an individual entity collection.

jQuery
JavaScript
var context = new DevExpress.data.ODataContext({
    url: "http://www.example.com/Northwind.svc",
    entities: {
        Categories: {
            key: "CategoryID",
            keyType: "Int32"
        },
        // An entity collection alias
        Clients: {
            name: "Customers",
            key: "CustomerID",
            keyType: "String"
        },
        Products: {
            // A composite key
            key: ["ProductID", "ProductCode"],
            keyType: {
                ProductID: "Guid",
                ProductCode: "Int32" 
            }
        }
    }
});
Angular
TypeScript
import ODataContext from "devextreme/data/odata/context";
// ...
export class AppComponent {
    context: ODataContext;
    constructor () {
        this.context = new ODataContext({
            url: "http://www.example.com/Northwind.svc",
            entities: {
                Categories: {
                    key: "CategoryID",
                    keyType: "Int32"
                },
                // An entity collection alias
                Clients: {
                    name: "Customers",
                    key: "CustomerID",
                    keyType: "String"
                },
                Products: {
                    // A composite key
                    key: ["ProductID", "ProductCode"],
                    keyType: {
                        ProductID: "Guid",
                        ProductCode: "Int32" 
                    }
                }
            }
        });
    }
}
AngularJS
JavaScript
angular.module('DemoApp', ['dx'])
    .controller('DemoController', function DemoController($scope) {
        $scope.context = new DevExpress.data.ODataContext({
            url: "http://www.example.com/Northwind.svc",
            entities: {
                Categories: {
                    key: "CategoryID",
                    keyType: "Int32"
                },
                // An entity collection alias
                Clients: {
                    name: "Customers",
                    key: "CustomerID",
                    keyType: "String"
                },
                Products: {
                    // A composite key
                    key: ["ProductID", "ProductCode"],
                    keyType: {
                        ProductID: "Guid",
                        ProductCode: "Int32" 
                    }
                }
            }
        })
    });
Knockout
JavaScript
  
var viewModel = {
    context: new DevExpress.data.ODataContext({
        url: "http://www.example.com/Northwind.svc",
        entities: {
            Categories: {
                key: "CategoryID",
                keyType: "Int32"
            },
            // An entity collection alias
            Clients: {
                name: "Customers",
                key: "CustomerID",
                keyType: "String"
            },
            Products: {
                // A composite key
                key: ["ProductID", "ProductCode"],
                keyType: {
                    ProductID: "Guid",
                    ProductCode: "Int32" 
                }
            }
        }
    })
};

ko.applyBindings(viewModel);
See Also

Configuration

This section describes the ODataContext's configuration options.

Name Description
beforeSend

Specifies a function that customizes the request before it is sent to the server.

deserializeDates

Specifies whether stores in the ODataContext serialize/parse date-time values.

entities

Specifies entity collections to be accessed.

errorHandler

Specifies a function that is executed when the ODataContext throws an error.

jsonp

Specifies whether data should be sent using JSONP.

url

Specifies a URL to an OData service.

version

Specifies the OData version.

withCredentials

Specifies whether to send cookies, authorization headers, and client certificates in a cross-origin request.

Methods

This section describes the methods that control the ODataContext.

Name Description
get(operationName, params)

Invokes an OData operation that returns a value.

invoke(operationName, params, httpMethod)

Invokes an OData operation that returns nothing.

objectLink(entityAlias, key)

Gets a link to an entity with a specific key.