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DATACMNS-1058 - Alter QueryByExampleExecutor.findOne to return Optional. #214

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DATACMNS-1058 - Alter QueryByExampleExecutor.findOne to return Optional. #214

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7c856c8
DATACMNS-1058 - Prepare issue branch.
christophstrobl May 5, 2017
22a23c0
DATACMNS-1058 - Alter QueryByExampleExecuter.findOne to return Option…
christophstrobl May 5, 2017
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2 changes: 1 addition & 1 deletion pom.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@

<groupId>org.springframework.data</groupId>
<artifactId>spring-data-commons</artifactId>
<version>2.0.0.BUILD-SNAPSHOT</version>
<version>2.0.0.DATACMNS-1058-SNAPSHOT</version>

<name>Spring Data Core</name>

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9 changes: 6 additions & 3 deletions src/main/java/org/springframework/data/repository/query/QueryByExampleExecutor.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2016 the original author or authors.
* Copyright 2016-2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
Expand All @@ -15,6 +15,8 @@
*/
package org.springframework.data.repository.query;

import java.util.Optional;

import org.springframework.data.domain.Example;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
Expand All @@ -25,6 +27,7 @@
*
* @param <T>
* @author Mark Paluch
* @author Christoph Strobl
* @since 1.12
*/
public interface QueryByExampleExecutor<T> {
Expand All @@ -33,10 +36,10 @@ public interface QueryByExampleExecutor<T> {
* Returns a single entity matching the given {@link Example} or {@literal null} if none was found.
*
* @param example can be {@literal null}.
* @return a single entity matching the given {@link Example} or {@literal null} if none was found.
* @return a single entity matching the given {@link Example} or {@link Optional#empty()} if none was found.
* @throws org.springframework.dao.IncorrectResultSizeDataAccessException if the Example yields more than one result.
*/
<S extends T> S findOne(Example<S> example);
<S extends T> Optional<S> findOne(Example<S> example);

/**
* Returns all entities matching the given {@link Example}. In case no match could be found an empty {@link Iterable}
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