Merge pull request #66 from eugenp/master

update

core-kotlin-modules/core-kotlin/src/main/kotlin/com/baeldung/exceptionhandling/ExceptionHandling.kt

@@ -0,0 +1,88 @@
+package com.baeldung.exceptionhandling
+
+import java.io.IOException
+
+class ExceptionHandling {
+
+    fun tryCatchBlock(): Int? {
+        try {
+            val message = "Welcome to Kotlin Tutorials"
+            return message.toInt()
+        } catch (exception: NumberFormatException) {
+            println("NumberFormatException in the code")
+            return null
+        }
+    }
+
+    fun tryCatchExpression(): Int? {
+        val number = try {
+            val message = "Welcome to Kotlin Tutorials"
+            message.toInt()
+        } catch (exception: NumberFormatException) {
+            println("NumberFormatException in the code")
+            null
+        }
+        return number
+    }
+
+    fun multipleCatchBlock(): Int? {
+        return try {
+            val result = 25 / 0
+            result
+        } catch (exception: NumberFormatException) {
+            println("NumberFormatException in the code")
+            null
+        } catch (exception: ArithmeticException) {
+            println("ArithmeticException in the code")
+            null
+        } catch (exception: Exception) {
+            println("Exception in the code")
+            null
+        }
+    }
+
+    fun nestedTryCatchBlock(): Int? {
+        return try {
+            val firstNumber = 50 / 2 * 0
+            try {
+                val secondNumber = 100 / firstNumber
+                secondNumber
+            } catch (exception: ArithmeticException) {
+                println("ArithmeticException in the code")
+                null
+            }
+        } catch (exception: NumberFormatException) {
+            println("NumberFormatException in the code")
+            null
+        }
+    }
+
+    fun finallyBlock(): Int? {
+        return try {
+            val message = "Welcome to Kotlin Tutorials"
+            message.toInt()
+        } catch (exception: NumberFormatException) {
+            println("NumberFormatException in the code")
+            null
+        } finally {
+            println("In the Finally block")
+        }
+    }
+
+    fun throwKeyword(): Int {
+        val message = "Welcome to Kotlin Tutorials"
+        if (message.length > 10) throw IllegalArgumentException("String is invalid")
+        else return message.length
+    }
+
+    fun throwExpression(): Int? {
+        val message: String? = null
+        return message?.length ?: throw IllegalArgumentException("String is null")
+    }
+
+    @Throws(IOException::class)
+    fun throwsAnnotation(): String?{
+        val filePath = null
+        return filePath ?: throw IOException("File path is invalid")
+    }
+}

core-kotlin-modules/core-kotlin/src/test/kotlin/com/baeldung/exceptionhandling/ExceptionHandlingUnitTest.kt

@@ -0,0 +1,51 @@
+package com.baeldung.exceptionhandling
+
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
+import java.io.IOException
+import kotlin.test.assertNull
+
+class ExceptionHandlingUnitTest {
+
+    private val classUnderTest: ExceptionHandling = ExceptionHandling()
+
+    @Test
+    fun givenInvalidConversion_whenTryCatchUsed_thenReturnsCatchBlockValue(){
+        assertNull(classUnderTest.tryCatchBlock())
+    }
+
+    @Test
+    fun givenInvalidConversion_whenTryCatchExpressionUsed_thenReturnsCatchBlockValue(){
+        assertNull(classUnderTest.tryCatchExpression())
+    }
+
+    @Test
+    fun givenDivisionByZero_whenMultipleCatchUsed_thenReturnsCatchBlockValue(){
+        assertNull(classUnderTest.multipleCatchBlock())
+    }
+
+    @Test
+    fun givenDivisionByZero_whenNestedTryCatchUsed_thenReturnsNestedCatchBlockValue(){
+        assertNull(classUnderTest.nestedTryCatchBlock())
+    }
+
+    @Test
+    fun givenInvalidConversion_whenTryCatchFinallyUsed_thenReturnsCatchAndFinallyBlock(){
+        assertNull(classUnderTest.finallyBlock())
+    }
+
+    @Test
+    fun givenIllegalArgument_whenThrowKeywordUsed_thenThrowsException(){
+        assertThrows<IllegalArgumentException> { classUnderTest.throwKeyword() }
+    }
+
+    @Test
+    fun givenIllegalArgument_whenElvisExpressionUsed_thenThrowsException(){
+        assertThrows<IllegalArgumentException> { classUnderTest.throwExpression() }
+    }
+
+    @Test
+    fun whenAnnotationUsed_thenThrowsException(){
+        assertThrows<IOException> { classUnderTest.throwsAnnotation() }
+    }
+}

guava-modules/pom.xml

@@ -4,9 +4,6 @@
     <modelVersion>4.0.0</modelVersion>
     <artifactId>guava-modules</artifactId>
     <name>guava-modules</name>
-    <properties>
-        <junit-jupiter.version>5.6.2</junit-jupiter.version>
-    </properties>
     <packaging>pom</packaging>
 
     <parent>
@@ -30,6 +27,11 @@
     </modules>
 
     <dependencies>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter</artifactId>
@@ -54,4 +56,9 @@
         </plugins>
     </build>
 
+    <properties>
+        <junit-jupiter.version>5.6.2</junit-jupiter.version>
+        <guava.version>29.0-jre</guava.version>
+    </properties>
+
 </project>

patterns/hexagonal-architecture/pom.xml

@@ -2,18 +2,19 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
-	<parent>
-		<groupId>org.springframework.boot</groupId>
-		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.3.0.RELEASE</version>
-		<relativePath/> <!-- lookup parent from repository -->
-	</parent>
 	<groupId>com.baeldung</groupId>
 	<artifactId>hexagonal-architecture</artifactId>
 	<version>1.0</version>
 	<name>hexagonal-architecture</name>
 	<description>Project for hexagonal architecture in java</description>
 
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-boot-2</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
+    </parent>
+
 	<properties>
 		<java.version>1.8</java.version>
 	</properties>

patterns/hexagonal-architecture/src/test/java/com/baeldung/pattern/hexagonal/domain/services/EmployeeServiceImplUnitTest.java

@@ -11,7 +11,7 @@ import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
-class EmployeeServiceImplTest {
+class EmployeeServiceImplUnitTest {
 
     private EmployeeRepository employeeRepository;
     private EmployeeService testService;

persistence-modules/hibernate-annotations/src/main/java/com/baeldung/hibernate/customtypes/PhoneNumberType.java

@@ -57,6 +57,8 @@ public class PhoneNumberType implements UserType {
 
         if (Objects.isNull(value)) {
             st.setNull(index, Types.INTEGER);
+            st.setNull(index+1, Types.INTEGER);
+            st.setNull(index+2, Types.INTEGER);
         } else {
             PhoneNumber employeeNumber = (PhoneNumber) value;
             st.setInt(index,employeeNumber.getCountryCode());

persistence-modules/pom.xml

@@ -59,11 +59,12 @@
         <module>spring-data-elasticsearch</module>
         <module>spring-data-gemfire</module>
         <module>spring-data-geode</module>
-        <module>spring-data-jpa</module>
-        <module>spring-data-jpa-2</module>
-        <module>spring-data-jpa-3</module>
-        <module>spring-data-jpa-4</module>
-        <module>spring-data-jpa-5</module>
+        <module>spring-data-jpa-annotations</module>
+        <module>spring-data-jpa-crud</module>
+        <module>spring-data-jpa-enterprise</module>
+        <module>spring-data-jpa-filtering</module>
+        <module>spring-data-jpa-query</module>
+        <module>spring-data-jpa-repo</module>
         <module>spring-data-keyvalue</module>
         <module>spring-data-mongodb</module>
         <module>spring-data-neo4j</module>

persistence-modules/spring-data-jpa-2/README.md

@@ -1,12 +0,0 @@
-### Relevant Articles: 
-- [Spring Data JPA – Derived Delete Methods](https://www.baeldung.com/spring-data-jpa-deleteby)
-- [JPA Join Types](https://www.baeldung.com/jpa-join-types)
-- [Case Insensitive Queries with Spring Data Repository](https://www.baeldung.com/spring-data-case-insensitive-queries)
-- [The Exists Query in Spring Data](https://www.baeldung.com/spring-data-exists-query)
-- [Spring Data JPA Repository Populators](https://www.baeldung.com/spring-data-jpa-repository-populators)
-- [Spring Data JPA and Null Parameters](https://www.baeldung.com/spring-data-jpa-null-parameters)
-- [Spring Data JPA Projections](https://www.baeldung.com/spring-data-jpa-projections)
-- [JPA @Embedded And @Embeddable](https://www.baeldung.com/jpa-embedded-embeddable)
-- [Spring Data JPA Delete and Relationships](https://www.baeldung.com/spring-data-jpa-delete)
-- [Spring Data JPA and Named Entity Graphs](https://www.baeldung.com/spring-data-jpa-named-entity-graphs)
-- [Customizing the Result of JPA Queries with Aggregation Functions](https://www.baeldung.com/jpa-queries-custom-result-with-aggregation-functions)

persistence-modules/spring-data-jpa-3/src/main/java/com/baeldung/model/BasicUser.java

@@ -1,42 +0,0 @@
-package com.baeldung.model;
-
-import javax.persistence.*;
-import java.util.Set;
-
-@Entity
-@Table(name = "users")
-public class BasicUser {
-
-    @Id
-    @GeneratedValue
-    private Long id;
-
-    private String username;
-
-    @ElementCollection
-    private Set<String> permissions;
-
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(Long id) {
-        this.id = id;
-    }
-
-    public String getUsername() {
-        return username;
-    }
-
-    public void setUsername(String username) {
-        this.username = username;
-    }
-
-    public Set<String> getPermissions() {
-        return permissions;
-    }
-
-    public void setPermissions(Set<String> permissions) {
-        this.permissions = permissions;
-    }
-}

persistence-modules/spring-data-jpa-3/src/main/java/com/baeldung/multipledb/dao/product/ProductRepository.java

@@ -1,13 +0,0 @@
-package com.baeldung.multipledb.dao.product;
-
-import java.util.List;
-
-import org.springframework.data.domain.Pageable;
-import org.springframework.data.repository.PagingAndSortingRepository;
-
-import com.baeldung.multipledb.model.product.Product;
-
-public interface ProductRepository extends PagingAndSortingRepository<Product, Integer> {
-
-    List<Product> findAllByPrice(double price, Pageable pageable);
-}

persistence-modules/spring-data-jpa-3/src/main/java/com/baeldung/repository/UserRepository.java

@@ -1,14 +0,0 @@
-package com.baeldung.repository;
-
-import java.util.Optional;
-
-import org.springframework.data.jpa.repository.JpaRepository;
-
-import com.baeldung.model.BasicUser;
-
-public interface UserRepository extends JpaRepository<BasicUser, Long> {
-
-    Optional<BasicUser> findSummaryByUsername(String username);
-
-    Optional<BasicUser> findByUsername(String username);
-}

persistence-modules/spring-data-jpa-3/src/test/java/com/baeldung/multipledb/ProductRepositoryIntegrationTest.java

@@ -1,142 +0,0 @@
-package com.baeldung.multipledb;
-
-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.boot.test.context.SpringBootTest;
-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.junit4.SpringRunner;
-import org.springframework.transaction.annotation.EnableTransactionManagement;
-import org.springframework.transaction.annotation.Transactional;
-
-import com.baeldung.multipledb.dao.product.ProductRepository;
-import com.baeldung.multipledb.model.product.Product;
-
-@RunWith(SpringRunner.class)
-@SpringBootTest(classes=MultipleDbApplication.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<Product> 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<Product> 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<Product> 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<Product> 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<Product> 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<Product> 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<Product> result = productRepository.findAllByPrice(10, pageRequest);
-
-        assertThat(result, hasSize(2));
-        assertTrue(result.stream()
-            .map(Product::getId)
-            .allMatch(id -> Arrays.asList(1002, 1005)
-                .contains(id)));
-    }
-}

persistence-modules/spring-data-jpa-3/src/test/resources/application-tc-auto.properties

@@ -1,4 +0,0 @@
-# configuration for test containers testing
-spring.datasource.url=${DB_URL}
-spring.datasource.username=${DB_USERNAME}
-spring.datasource.password=${DB_PASSWORD}

persistence-modules/spring-data-jpa-3/src/test/resources/application-tc.properties

@@ -1,4 +0,0 @@
-# configuration for Test Containers testing
-spring.datasource.driver-class-name=org.postgresql.Driver
-spring.jpa.hibernate.ddl-auto=create-drop
-spring.jpa.properties.hibernate.temp.use_jdbc_metadata_defaults=false

persistence-modules/spring-data-jpa-4/create.sql

@@ -1,2 +0,0 @@
-create table PERSON (ID int8 not null, FIRST_NAME varchar(255), LAST_NAME varchar(255), primary key (ID))
-create table person (id int8 not null, first_name varchar(255), last_name varchar(255), primary key (id))

persistence-modules/spring-data-jpa-5/README.md

@@ -1,15 +0,0 @@
-### Relevant Articles: 
-
-- [Spring JPA @Embedded and @EmbeddedId](https://www.baeldung.com/spring-jpa-embedded-method-parameters)
-- [Generate Database Schema with Spring Data JPA](https://www.baeldung.com/spring-data-jpa-generate-db-schema)
-- [Partial Data Update with Spring Data](https://www.baeldung.com/spring-data-partial-update)
-
-### Eclipse Config 
-After importing the project into Eclipse, you may see the following error:  
-"No persistence xml file found in project"
-
-This can be ignored: 
-- Project -> Properties -> Java Persistance -> JPA -> Error/Warnings -> Select Ignore on "No persistence xml file found in project"
-Or: 
-- Eclipse -> Preferences - Validation - disable the "Build" execution of the JPA Validator 
-

persistence-modules/spring-data-jpa-annotations/README.md

@@ -0,0 +1,23 @@
+## Spring Data JPA - Annotations
+
+This module contains articles about annotations used in Spring Data JPA 
+
+### Relevant articles
+
+- [Spring Data Annotations](https://www.baeldung.com/spring-data-annotations)
+- [DDD Aggregates and @DomainEvents](https://www.baeldung.com/spring-data-ddd)
+- [JPA @Embedded And @Embeddable](https://www.baeldung.com/jpa-embedded-embeddable)
+- [Spring Data JPA @Modifying Annotation](https://www.baeldung.com/spring-data-jpa-modifying-annotation)
+- [Spring JPA @Embedded and @EmbeddedId](https://www.baeldung.com/spring-jpa-embedded-method-parameters)
+- [Programmatic Transaction Management in Spring](https://www.baeldung.com/spring-programmatic-transaction-management)
+- [JPA Entity Lifecycle Events](https://www.baeldung.com/jpa-entity-lifecycle-events)
+
+### Eclipse Config 
+After importing the project into Eclipse, you may see the following error:  
+"No persistence xml file found in project"
+
+This can be ignored: 
+- Project -> Properties -> Java Persistance -> JPA -> Error/Warnings -> Select Ignore on "No persistence xml file found in project"
+Or: 
+- Eclipse -> Preferences - Validation - disable the "Build" execution of the JPA Validator 
+

persistence-modules/spring-data-jpa-annotations/pom.xml

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>spring-data-jpa-annotations</artifactId>
+    <name>spring-data-jpa-annotations</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-boot-2</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-ehcache</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-envers</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+        </dependency>
+
+        <!-- Test containers only dependencies -->
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>postgresql</artifactId>
+            <version>${testcontainers.postgresql.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.postgresql</groupId>
+            <artifactId>postgresql</artifactId>
+        </dependency>
+        <!-- Test containers only dependencies -->
+
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <start-class>com.baeldung.boot.Application</start-class>
+        <testcontainers.postgresql.version>1.10.6</testcontainers.postgresql.version>
+        <postgresql.version>42.2.5</postgresql.version>
+        <guava.version>21.0</guava.version>
+    </properties>
+
+</project>

persistence-modules/spring-data-jpa-crud/README.md

@@ -1,14 +1,15 @@
+## Spring Data JPA - CRUD
+
+This module contains articles about CRUD operations in Spring Data JPA 
+
 ### Relevant Articles: 
-- [Limiting Query Results with JPA and Spring Data JPA](https://www.baeldung.com/jpa-limit-query-results)
-- [Sorting Query Results with Spring Data](https://www.baeldung.com/spring-data-sorting)
+- [Spring Data JPA – Derived Delete Methods](https://www.baeldung.com/spring-data-jpa-deleteby)
+- [Spring Data JPA Delete and Relationships](https://www.baeldung.com/spring-data-jpa-delete)
 - [INSERT Statement in JPA](https://www.baeldung.com/jpa-insert)
-- [Pagination and Sorting using Spring Data JPA](https://www.baeldung.com/spring-data-jpa-pagination-sorting)
-- [Spring Data JPA Query by Example](https://www.baeldung.com/spring-data-query-by-example)
-- [DB Integration Tests with Spring Boot and Testcontainers](https://www.baeldung.com/spring-boot-testcontainers-integration-test)
-- [Spring Data JPA @Modifying Annotation](https://www.baeldung.com/spring-data-jpa-modifying-annotation)
 - [Spring Data JPA Batch Inserts](https://www.baeldung.com/spring-data-jpa-batch-inserts)
 - [Batch Insert/Update with Hibernate/JPA](https://www.baeldung.com/jpa-hibernate-batch-insert-update)
 - [Difference Between save() and saveAndFlush() in Spring Data JPA](https://www.baeldung.com/spring-data-jpa-save-saveandflush)
+- [Generate Database Schema with Spring Data JPA](https://www.baeldung.com/spring-data-jpa-generate-db-schema)
 
 ### Eclipse Config 
 After importing the project into Eclipse, you may see the following error:  

persistence-modules/spring-data-jpa-crud/pom.xml

@@ -4,8 +4,8 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
          http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <artifactId>spring-data-jpa-3</artifactId>
-    <name>spring-data-jpa-3</name>
+    <artifactId>spring-data-jpa-crud</artifactId>
+    <name>spring-data-jpa-crud</name>
 
     <parent>
         <groupId>com.baeldung</groupId>

persistence-modules/spring-data-jpa-crud/src/main/resources/application.properties

@@ -0,0 +1,14 @@
+spring.main.allow-bean-definition-overriding=true
+
+spring.jpa.properties.hibernate.jdbc.batch_size=4
+spring.jpa.properties.hibernate.order_inserts=true
+spring.jpa.properties.hibernate.order_updates=true
+spring.jpa.properties.hibernate.generate_statistics=true
+
+# JPA-Schema-Generation
+# Use below configuration to generate database schema create commands based on the entity models
+# and export them into the create.sql file
+#spring.jpa.properties.javax.persistence.schema-generation.scripts.action=create
+#spring.jpa.properties.javax.persistence.schema-generation.scripts.create-target=create.sql
+#spring.jpa.properties.javax.persistence.schema-generation.scripts.create-source=metadata
+#spring.jpa.properties.hibernate.format_sql=true

persistence-modules/spring-data-jpa-enterprise/README.md

@@ -1,12 +1,17 @@
+## Spring Data JPA - Enterprise
+
+This module contains articles about Spring Data JPA used in enterprise applications such as transactions, sessions, naming conventions and more 
+
 ### Relevant Articles: 
-- [Derived Query Methods in Spring Data JPA Repositories](https://www.baeldung.com/spring-data-derived-queries)
-- [LIKE Queries in Spring JPA Repositories](https://www.baeldung.com/spring-jpa-like-queries)
+
+- [Spring JPA – Multiple Databases](https://www.baeldung.com/spring-data-jpa-multiple-databases)
+- [Spring Data Java 8 Support](https://www.baeldung.com/spring-data-java-8)
+- [Pagination and Sorting using Spring Data JPA](https://www.baeldung.com/spring-data-jpa-pagination-sorting)
+- [DB Integration Tests with Spring Boot and Testcontainers](https://www.baeldung.com/spring-boot-testcontainers-integration-test)
 - [A Guide to Spring’s Open Session In View](https://www.baeldung.com/spring-open-session-in-view)
-- [Programmatic Transaction Management in Spring](https://www.baeldung.com/spring-programmatic-transaction-management)
-- [JPA Entity Lifecycle Events](https://www.baeldung.com/jpa-entity-lifecycle-events)
 - [Working with Lazy Element Collections in JPA](https://www.baeldung.com/java-jpa-lazy-collections)
-- [Calling Stored Procedures from Spring Data JPA Repositories](https://www.baeldung.com/spring-data-jpa-stored-procedures)
 - [Custom Naming Convention with Spring Data JPA](https://www.baeldung.com/spring-data-jpa-custom-naming)
+- [Partial Data Update with Spring Data](https://www.baeldung.com/spring-data-partial-update)
 
 ### Eclipse Config 
 After importing the project into Eclipse, you may see the following error:  
@@ -16,3 +21,4 @@ This can be ignored:
 - Project -> Properties -> Java Persistance -> JPA -> Error/Warnings -> Select Ignore on "No persistence xml file found in project"
 Or: 
 - Eclipse -> Preferences - Validation - disable the "Build" execution of the JPA Validator 
+

persistence-modules/spring-data-jpa-enterprise/pom.xml

@@ -3,8 +3,8 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <modelVersion>4.0.0</modelVersion>
-    <artifactId>spring-data-jpa-5</artifactId>
-    <name>spring-data-jpa-5</name>
+    <artifactId>spring-data-jpa-enterprise</artifactId>
+    <name>spring-data-jpa-enterprise</name>
 
     <parent>
         <groupId>com.baeldung</groupId>
@@ -39,6 +39,17 @@
             <artifactId>h2</artifactId>
         </dependency>
         
+         <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-envers</artifactId>
+        </dependency>
+      
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+        
         <dependency>
             <groupId>org.mapstruct</groupId>
             <artifactId>mapstruct-jdk8</artifactId>
@@ -46,6 +57,20 @@
             <scope>provided</scope>
         </dependency>
         
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+      
+      <!-- Test containers only dependencies -->
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>postgresql</artifactId>
+            <version>${testcontainers.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <!-- Test containers only dependencies -->
     </dependencies>
 
     <build>
@@ -75,6 +100,8 @@
         <spring-geode-starter-version>1.1.1.RELEASE</spring-geode-starter-version>
         <spring.boot.starter.version>2.1.9.RELEASE</spring.boot.starter.version>
         <mapstruct.version>1.3.1.Final</mapstruct.version>
+        <guava.version>21.0</guava.version>
+        <testcontainers.version>1.12.2</testcontainers.version>
     </properties>
 
 </project>

persistence-modules/spring-data-jpa-enterprise/src/main/java/com/baeldung/Application.java

@@ -1,14 +1,13 @@
-package com.baeldung.multipledb;
+package com.baeldung;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @SpringBootApplication
-public class MultipleDbApplication {
+public class Application {
 
     public static void main(String[] args) {
-        SpringApplication.run(MultipleDbApplication.class, args);
+        SpringApplication.run(Application.class, args);
     }
 
 }
-

persistence-modules/spring-data-jpa-enterprise/src/main/java/com/baeldung/boot/Application.java

@@ -0,0 +1,17 @@
+package com.baeldung.boot;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+@SpringBootApplication
+@EnableJpaRepositories("com.baeldung")
+@EntityScan("com.baeldung")
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+
+}