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Bindings

Bindings connect OpenUI5 view elements to model data, allowing changes in the model to be reflected in the view element and vice versa.

The OData V4 model supports the following types of binding:

List bindings, which represent a collection (of OData entities, complex or primitive types) such as /SalesOrderList (see the sap.ui.model.odata.v4.ODataListBinding API documentation in the Demo Kit)
Context bindings, which represent a single entity such as /SalesOrderList('0500000000') or a structural property with complex type (see the sap.ui.model.odata.v4.ODataContextBinding API documentation in the Demo Kit)
Property bindings, which represent a single, primitive type property in an entity or complex type such as /ProductList('HT-1000')/Name (see the sap.ui.model.odata.v4.ODataPropertyBinding API documentation in the Demo Kit)
Creating Bindings
Path Syntax
Initialization and Read Requests
Parameters
Binding Collection Inline Count
Type Determination
Binding Modes
Suspend and Resume
A suspended binding does not send data service requests nor does it fire change events. You can resume a suspended list or context binding with its resume method.
Context API
Accessing Data in Controller Code
In the OData V4 model, bindings are used to access and modify back-end data also if the data is accessed or modified in controller code.
Automatic determination of $expand and $select
Data Reuse
The OData V4 model keeps data with respect to bindings. This allows different views on the same data but also means that data is not automatically shared between bindings. There are mechanisms for sharing data to avoid redundant requests and to keep the same data in different controls in sync.