Module org.omnifaces.utils

Package org.omnifaces.utils.reflect

Interface Getter<T>

Type Parameters:

T - The generic base type.

All Superinterfaces:

Function<T,Object>, Serializable

public interface Getter<T>
extends Function<T,Object>, Serializable

So we can extract method info from a method reference. Usage example:

 Map<Getter<YourEntity>, Object> criteria = new HashMap<>();
 criteria.put(YourEntity::getName, Like.startsWith(searchNameStartsWith));
 criteria.put(YourEntity::getCreated, Order.greaterThanOrEqualTo(searchStartDate));
 criteria.put(YourEntity::getType, searchTypes);
 criteria.put(YourEntity::isDeleted, false);
 

And then later on in "the backend":

 criteria.forEach((getter, value) -> requiredCriteria.put(getter.getPropertyName(), value));
 

This allows a type safe way of defining property names.

Inspired by Lambda parameter names with reflection. NOTE: works only in Java 8u60 and newer.

Author:

Bauke Scholtz

Method Summary

Modifier and Type	Method	Description
default Class<T>	getBaseType()
default Method	getMethod()
default String	getPropertyName()
default Class<?>	getReturnType()
default SerializedLambda	getSerializedLambda()

Methods inherited from interface java.util.function.Function

andThen, apply, compose

Method Details

getSerializedLambda

default SerializedLambda getSerializedLambda()

getBaseType

default Class<T> getBaseType()

getMethod

default Method getMethod()

getPropertyName

default String getPropertyName()

getReturnType

default Class<?> getReturnType()