BAEL-2841 spring data jpa populators

persistence-modules/spring-data-jpa-2/pom.xml

@@ -1,30 +1,40 @@
 <?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"
+	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">
+	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>
+	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.baeldung</groupId>
-    <artifactId>spring-data-jpa-2</artifactId>
+	<artifactId>spring-data-jpa-2</artifactId>
 	<name>spring-data-jpa</name>
 
-    <parent>
+	<parent>
-        <artifactId>parent-boot-2</artifactId>
+		<artifactId>parent-boot-2</artifactId>
-        <groupId>com.baeldung</groupId>
+		<groupId>com.baeldung</groupId>
-        <version>0.0.1-SNAPSHOT</version>
+		<version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-boot-2</relativePath>
+		<relativePath>../../parent-boot-2</relativePath>
-    </parent>
+	</parent>
 
-    <dependencies>
+	<dependencies>
-        <dependency>
+		<dependency>
-            <groupId>org.springframework.boot</groupId>
+			<groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-data-jpa</artifactId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
-        </dependency>
+		</dependency>
 
-        <dependency>
+		<dependency>
-            <groupId>com.h2database</groupId>
+			<groupId>com.h2database</groupId>
-            <artifactId>h2</artifactId>
+			<artifactId>h2</artifactId>
-        </dependency>
+		</dependency>
 
-    </dependencies>
+		<dependency>
+			<groupId>com.fasterxml.jackson.core</groupId>
+			<artifactId>jackson-databind</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-oxm</artifactId>
+		</dependency>
+
+	</dependencies>
 
 </project>

persistence-modules/spring-data-jpa-2/src/main/java/com/baeldung/config/JpaPopulators.java

@@ -0,0 +1,33 @@
+package com.baeldung.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.core.io.Resource;
+import org.springframework.data.repository.init.Jackson2RepositoryPopulatorFactoryBean;
+import org.springframework.data.repository.init.UnmarshallerRepositoryPopulatorFactoryBean;
+import org.springframework.oxm.jaxb.Jaxb2Marshaller;
+
+import com.baeldung.entity.Fruit;
+
+@Configuration
+public class JpaPopulators {
+
+    @Bean
+    public Jackson2RepositoryPopulatorFactoryBean getRespositoryPopulator() throws Exception {
+        Jackson2RepositoryPopulatorFactoryBean factory = new Jackson2RepositoryPopulatorFactoryBean();
+        factory.setResources(new Resource[] { (Resource) new ClassPathResource("fruit-data.json") });
+        return factory;
+    }
+
+    @Bean
+    public UnmarshallerRepositoryPopulatorFactoryBean repositoryPopulator() {
+        Jaxb2Marshaller marshaller = new Jaxb2Marshaller();
+        marshaller.setClassesToBeBound(Fruit.class);
+        UnmarshallerRepositoryPopulatorFactoryBean factory = new UnmarshallerRepositoryPopulatorFactoryBean();
+        factory.setUnmarshaller(marshaller);
+        factory.setResources(new Resource[] { new ClassPathResource("fruit-data.xml") });
+        return factory;
+    }
+
+}

persistence-modules/spring-data-jpa-2/src/main/java/com/baeldung/entity/Fruit.java

@@ -2,7 +2,9 @@ package com.baeldung.entity;
 
 import javax.persistence.Entity;
 import javax.persistence.Id;
+import javax.xml.bind.annotation.XmlRootElement;
 
+@XmlRootElement
 @Entity
 public class Fruit {
 

persistence-modules/spring-data-jpa-2/src/main/resources/fruit-data.json

@@ -0,0 +1,14 @@
+[
+	{
+		"_class": "com.baeldung.entity.Fruit",
+		"name": "apple",
+		"color": "red",
+		"id": 1
+	},
+	{
+		"_class": "com.baeldung.entity.Fruit",
+		"name": "guava",
+		"color": "green",
+		"id": 2
+	}
+]

persistence-modules/spring-data-jpa-2/src/main/resources/fruit-data.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<fruit>
+	<id>3</id>
+	<name>mango</name>
+	<color>yellow</color>
+</fruit>

persistence-modules/spring-data-jpa-2/src/test/java/com/baeldung/repository/FruitPopulatorTest.java

@@ -0,0 +1,53 @@
+package com.baeldung.repository;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.List;
+
+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.test.context.junit4.SpringRunner;
+
+import com.baeldung.entity.Fruit;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class FruitPopulatorTest {
+
+    @Autowired
+    private FruitRepository fruitRepository;
+
+    @Test
+    public void givenFruitJsonPopulatorThenShouldInsertRecordOnStart() {
+
+        List<Fruit> fruits = fruitRepository.findAll();
+        assertEquals("record count is not matching", 3, fruits.size());
+
+        fruits.forEach(fruit -> {
+            if (1 == fruit.getId()) {
+                assertEquals("This is not an apple", "apple", fruit.getName());
+                assertEquals("It is not a red colored fruit", "red", fruit.getColor());
+            } else if (2 == fruit.getId()) {
+                assertEquals("This is not a guava", "guava", fruit.getName());
+                assertEquals("It is not a green colored fruit", "green", fruit.getColor());
+            }
+        });
+    }
+
+    @Test
+    public void givenFruitXmlPopulatorThenShouldInsertRecordOnStart() {
+
+        List<Fruit> fruits = fruitRepository.findAll();
+        assertEquals("record count is not matching", 3, fruits.size());
+
+        fruits.forEach(fruit -> {
+            if (3 == fruit.getId()) {
+                assertEquals("This is not a mango", "mango", fruit.getName());
+                assertEquals("It is not a yellow colored fruit", "yellow", fruit.getColor());
+            }
+        });
+    }
+
+}