com.graphql_java_generator.samples.basic.server

Class GraphQLUtil

java.lang.Object

com.graphql_java_generator.samples.basic.server.GraphQLUtil

@Component
public class GraphQLUtil
extends Object

Constructor Summary

Constructors

Constructor and Description
GraphQLUtil()

Method Summary

Modifier and Type	Method and Description
<I> List<I>	iterableConcreteClassToListInterface(Iterable<? extends I> iterable) Transform an Iterable (which can be a List) of a concrete class, into a List of the I interface or superclass.
<I> List<I>	iterableToList(Iterable<I> iterable) Transform an Iterable (which can be a List), into a List of items of the same type.
<T> T	optionalToObject(Optional<T> optional) Transform an Optional, as returned by Spring Data repositories, into a standard Java, which is null if there is no value.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GraphQLUtil

public GraphQLUtil()

Method Detail

iterableToList

public <I> List<I> iterableToList(Iterable<I> iterable)

Transform an Iterable (which can be a List), into a List of items of the same type. It's usefull to transform the native type from Spring Data repositories (which needs concrete class to map into) into the list of relevant GraphQL interface

Type Parameters:

I -

Parameters:

iterable -

Returns:

iterableConcreteClassToListInterface

public <I> List<I> iterableConcreteClassToListInterface(Iterable<? extends I> iterable)

Transform an Iterable (which can be a List) of a concrete class, into a List of the I interface or superclass. It's usefull to transform the native type from Spring Data repositories (which needs concrete class to map into) into the list of relevant GraphQL interface

Type Parameters:

I -

Parameters:

iterable -

Returns:

optionalToObject

public <T> T optionalToObject(Optional<T> optional)

Transform an Optional, as returned by Spring Data repositories, into a standard Java, which is null if there is no value.

Parameters:

optional -

Returns: