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#62 - Add example for Java 8 Streams in JPA.

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This example demonstrates streaming of results in JPA.

Original pull request: #63.
This commit is contained in:
Thomas Darimont
2015-03-09 09:25:02 +01:00
committed by Oliver Gierke
parent 49df9468b5
commit f5e6b3b6be
2 changed files with 36 additions and 2 deletions
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13
jpa/java8/src/main/java/example/springdata/jpa/java8/CustomerRepository.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2013-2014 the original author or authors.
* Copyright 2013-2015 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.
@@ -16,7 +16,9 @@
package example.springdata.jpa.java8;
import java.util.Optional;
import java.util.stream.Stream;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.CrudRepository;
import org.springframework.data.repository.Repository;
@@ -60,4 +62,13 @@ public interface CustomerRepository extends Repository<Customer, Long> {
default Optional<Customer> findByLastname(Customer customer) {
return findByLastname(customer == null ? null : customer.lastname);
}
/**
* Sample method to demonstrate support for {@link Stream} as a return type. The query is executed in a streaming
* fashion which means that the method returns as soon as the first results are ready.
*
* @return
*/
@Query("select c from Customer c")
Stream<Customer> streamAllCustomers();
}