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com.vaadin.flow.function.
Package com.vaadin.flow.function
Interface ValueProvider<SOURCE,TARGET>
Type Parameters:
SOURCE - the type of the object used to provide the value
TARGET - the type of the provided value
All Superinterfaces:
Function<SOURCE,, Serializable, SerializableFunction<SOURCE,
All Known Subinterfaces:
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 ValueProvider<SOURCE,TARGET>
extends SerializableFunction<SOURCE,TARGET>
A callback interface for providing values from a given source.
For example this interface can be implemented to simply extract a value with a getter, or to create a composite value based on the fields of the source object.
Since:
1.0.
Author:
Vaadin Ltd
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Method Summary
Modifier and TypeMethodDescriptionProvides a value from the given source object.
static <T> ValueProvider<T,T> identity()Returns a value provider that always returns its input argument.
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Method Details
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identity
Returns a value provider that always returns its input argument.
Type Parameters:
T- the type of the input and output objects to the functionReturns:
a function that always returns its input argument
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apply
Provides a value from the given source object.
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