From 50f23889012685d6ca1820f414ebad2ad570ed30 Mon Sep 17 00:00:00 2001 From: Shubhra Srivastava Date: Fri, 14 Dec 2018 22:56:10 +0530 Subject: [PATCH] BAEL-2411 Spring Data Jpa Pagingg and Sorting (#5912) --- .../product/ProductRepository.java | 9 +- .../com/baeldung/domain/product/Product.java | 17 ++- .../ProductRepositoryIntegrationTest.java | 142 ++++++++++++++++++ 3 files changed, 165 insertions(+), 3 deletions(-) mode change 100644 => 100755 persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/product/ProductRepository.java mode change 100644 => 100755 persistence-modules/spring-data-jpa/src/main/java/com/baeldung/domain/product/Product.java create mode 100644 persistence-modules/spring-data-jpa/src/test/java/com/baeldung/dao/repositories/product/ProductRepositoryIntegrationTest.java diff --git a/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/product/ProductRepository.java b/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/product/ProductRepository.java old mode 100644 new mode 100755 index 7044d57e53..1f9f5f9195 --- a/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/product/ProductRepository.java +++ b/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/product/ProductRepository.java @@ -1,8 +1,13 @@ package com.baeldung.dao.repositories.product; import com.baeldung.domain.product.Product; -import org.springframework.data.jpa.repository.JpaRepository; -public interface ProductRepository extends JpaRepository { +import java.util.List; +import org.springframework.data.domain.Pageable; +import org.springframework.data.repository.PagingAndSortingRepository; + +public interface ProductRepository extends PagingAndSortingRepository { + + List findAllByPrice(double price, Pageable pageable); } diff --git a/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/domain/product/Product.java b/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/domain/product/Product.java old mode 100644 new mode 100755 index 42e6dd8f45..2f82e3e318 --- a/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/domain/product/Product.java +++ b/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/domain/product/Product.java @@ -19,6 +19,17 @@ public class Product { super(); } + private Product(int id, String name, double price) { + super(); + this.id = id; + this.name = name; + this.price = price; + } + + public static Product from(int id, String name, double price) { + return new Product(id, name, price); + } + public int getId() { return id; } @@ -46,7 +57,11 @@ public class Product { @Override public String toString() { final StringBuilder builder = new StringBuilder(); - builder.append("Product [name=").append(name).append(", id=").append(id).append("]"); + builder.append("Product [name=") + .append(name) + .append(", id=") + .append(id) + .append("]"); return builder.toString(); } } diff --git a/persistence-modules/spring-data-jpa/src/test/java/com/baeldung/dao/repositories/product/ProductRepositoryIntegrationTest.java b/persistence-modules/spring-data-jpa/src/test/java/com/baeldung/dao/repositories/product/ProductRepositoryIntegrationTest.java new file mode 100644 index 0000000000..4caa0f0ca4 --- /dev/null +++ b/persistence-modules/spring-data-jpa/src/test/java/com/baeldung/dao/repositories/product/ProductRepositoryIntegrationTest.java @@ -0,0 +1,142 @@ +package com.baeldung.dao.repositories.product; + +import static org.hamcrest.Matchers.equalTo; +import static org.hamcrest.Matchers.hasSize; +import static org.junit.Assert.assertThat; +import static org.junit.Assert.assertTrue; + +import java.util.Arrays; +import java.util.List; +import java.util.stream.Collectors; + +import org.junit.Before; +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.data.domain.Page; +import org.springframework.data.domain.PageRequest; +import org.springframework.data.domain.Pageable; +import org.springframework.data.domain.Sort; +import org.springframework.test.context.ContextConfiguration; +import org.springframework.test.context.junit4.SpringRunner; +import org.springframework.transaction.annotation.EnableTransactionManagement; +import org.springframework.transaction.annotation.Transactional; + +import com.baeldung.config.PersistenceProductConfiguration; +import com.baeldung.domain.product.Product; + +@RunWith(SpringRunner.class) +@ContextConfiguration(classes = { PersistenceProductConfiguration.class }) +@EnableTransactionManagement +public class ProductRepositoryIntegrationTest { + + @Autowired + private ProductRepository productRepository; + + @Before + @Transactional("productTransactionManager") + public void setUp() { + productRepository.save(Product.from(1001, "Book", 21)); + productRepository.save(Product.from(1002, "Coffee", 10)); + productRepository.save(Product.from(1003, "Jeans", 30)); + productRepository.save(Product.from(1004, "Shirt", 32)); + productRepository.save(Product.from(1005, "Bacon", 10)); + } + + @Test + public void whenRequestingFirstPageOfSizeTwo_ThenReturnFirstPage() { + Pageable pageRequest = PageRequest.of(0, 2); + + Page result = productRepository.findAll(pageRequest); + + assertThat(result.getContent(), hasSize(2)); + assertTrue(result.stream() + .map(Product::getId) + .allMatch(id -> Arrays.asList(1001, 1002) + .contains(id))); + } + + @Test + public void whenRequestingSecondPageOfSizeTwo_ThenReturnSecondPage() { + Pageable pageRequest = PageRequest.of(1, 2); + + Page result = productRepository.findAll(pageRequest); + + assertThat(result.getContent(), hasSize(2)); + assertTrue(result.stream() + .map(Product::getId) + .allMatch(id -> Arrays.asList(1003, 1004) + .contains(id))); + } + + @Test + public void whenRequestingLastPage_ThenReturnLastPageWithRemData() { + Pageable pageRequest = PageRequest.of(2, 2); + + Page result = productRepository.findAll(pageRequest); + + assertThat(result.getContent(), hasSize(1)); + assertTrue(result.stream() + .map(Product::getId) + .allMatch(id -> Arrays.asList(1005) + .contains(id))); + } + + @Test + public void whenSortingByNameAscAndPaging_ThenReturnSortedPagedResult() { + Pageable pageRequest = PageRequest.of(0, 3, Sort.by("name")); + + Page result = productRepository.findAll(pageRequest); + + assertThat(result.getContent(), hasSize(3)); + assertThat(result.getContent() + .stream() + .map(Product::getId) + .collect(Collectors.toList()), equalTo(Arrays.asList(1005, 1001, 1002))); + + } + + @Test + public void whenSortingByPriceDescAndPaging_ThenReturnSortedPagedResult() { + Pageable pageRequest = PageRequest.of(0, 3, Sort.by("price") + .descending()); + + Page result = productRepository.findAll(pageRequest); + + assertThat(result.getContent(), hasSize(3)); + assertThat(result.getContent() + .stream() + .map(Product::getId) + .collect(Collectors.toList()), equalTo(Arrays.asList(1004, 1003, 1001))); + + } + + @Test + public void whenSortingByPriceDescAndNameAscAndPaging_ThenReturnSortedPagedResult() { + Pageable pageRequest = PageRequest.of(0, 5, Sort.by("price") + .descending() + .and(Sort.by("name"))); + + Page result = productRepository.findAll(pageRequest); + + assertThat(result.getContent(), hasSize(5)); + assertThat(result.getContent() + .stream() + .map(Product::getId) + .collect(Collectors.toList()), equalTo(Arrays.asList(1004, 1003, 1001, 1005, 1002))); + + } + + @Test + public void whenRequestingFirstPageOfSizeTwoUsingCustomMethod_ThenReturnFirstPage() { + Pageable pageRequest = PageRequest.of(0, 2); + + List result = productRepository.findAllByPrice(10, pageRequest); + + assertThat(result, hasSize(2)); + assertTrue(result.stream() + .map(Product::getId) + .allMatch(id -> Arrays.asList(1002, 1005) + .contains(id))); + } +}