DATAREST-1064 - Adapt to API changes in repository interfaces.

Additional cleanups in QuerydslAwareRootResourceInformationHandlerMethodArgumentResolver to make sure a QuerydslRepositoryInvokerAdapter is only applied if the QuerydslPredicateBuilder actually exposes a predicate. Extracted a couple of methods to make sure the mapping pipeline reads nicely.

spring-data-rest-core/src/test/java/org/springframework/data/rest/core/UriToEntityConverterUnitTests.java

@@ -105,7 +105,7 @@ public class UriToEntityConverterUnitTests {
 		Entity reference = new Entity();
 
 		RepositoryInvoker invoker = mock(RepositoryInvoker.class);
-		doReturn(Optional.of(reference)).when(invoker).invokeFindOne("1");
+		doReturn(Optional.of(reference)).when(invoker).invokeFindById("1");
 		doReturn(invoker).when(invokerFactory).getInvokerFor(ENTITY_TYPE.getType());
 
 		assertThat(converter.convert(URI.create("/foo/bar/1"), URI_TYPE, ENTITY_TYPE)).isEqualTo((Object) reference);

spring-data-rest-core/src/test/java/org/springframework/data/rest/core/domain/OrderRepository.java

@@ -32,10 +32,10 @@ public interface OrderRepository extends CrudRepository<Order, UUID> {
 	@Override
 	<S extends Order> S save(S entity);
 
-	/* 
+	/*
 	 * (non-Javadoc)
-	 * @see org.springframework.data.repository.CrudRepository#findOne(java.io.Serializable)
+	 * @see org.springframework.data.repository.CrudRepository#findById(java.lang.Object)
 	 */
 	@Override
-	Optional<Order> findOne(UUID id);
+	Optional<Order> findById(UUID id);
 }

spring-data-rest-core/src/test/java/org/springframework/data/rest/core/mapping/CrudMethodsSupportedHttpMethodsUnitTests.java

@@ -152,7 +152,7 @@ public class CrudMethodsSupportedHttpMethodsUnitTests {
 
 		@Override
 		@RestResource(exported = false)
-		Optional<Object> findOne(Long id);
+		Optional<Object> findById(Long id);
 	}
 
 	interface NoFindOne extends Repository<Object, Long> {

spring-data-rest-core/src/test/java/org/springframework/data/rest/core/support/UnwrappingRepositoryInvokerFactoryUnitTests.java

@@ -86,7 +86,7 @@ public class UnwrappingRepositoryInvokerFactoryUnitTests {
 		when(delegate.getInvokerFor(Profile.class)).thenReturn(invoker);
 
 		factory = new UnwrappingRepositoryInvokerFactory(delegate, Arrays.asList(lookup));
-		factory.getInvokerFor(Profile.class).invokeFindOne(1L);
+		factory.getInvokerFor(Profile.class).invokeFindById(1L);
 
 		verify(lookup, times(1)).lookupEntity(eq(1L));
 	}