com.vaadin.flow.data.provider.IdentifierProvider API 23.1.17 | Vaadin

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com.vaadin.flow.data.provider.

Type Parameters:

T - the type of the item

All Superinterfaces:

Function<T,Object>, Serializable, SerializableFunction<T,Object>, ValueProvider<T,Object>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface IdentifierProvider<T>
extends ValueProvider<T,Object>
```
A callback interface that is used to provide the identifier of an item.

Since:

- Method Summary
  
  Static Methods
  Modifier and Type Method Description
  
  static <T> IdentifierProvider<T> identity()
  Returns an identifier provider that always returns its input argument.
  - Methods inherited from interface java.util.function.Function
    andThen, compose
  - Methods inherited from interface com.vaadin.flow.function.ValueProvider
    apply

- Method Detail
  - identity
```
static <T> IdentifierProvider<T> identity()
```
    Returns an identifier provider that always returns its input argument.
    
    Type Parameters:
    
    T - the type of the input and output objects to the function
    
    Returns:
    
    a function that always returns its input argument