Merge pull request #6695 from sumitsg34/master

BAEL-2841 spring data jpa populators

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

@@ -1,12 +1,13 @@
 <?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>
-	<groupId>com.baeldung</groupId>
+
+    <groupId>com.baeldung</groupId>
     <artifactId>spring-data-jpa-2</artifactId>
-	<name>spring-data-jpa</name>
+    <name>spring-data-jpa</name>
-	
+
     <parent>
         <artifactId>parent-boot-2</artifactId>
         <groupId>com.baeldung</groupId>
@@ -19,12 +20,22 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-data-jpa</artifactId>
         </dependency>
-  
+
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
         </dependency>
-      
+
+        <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 +1,35 @@
+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[] { new ClassPathResource("fruit-data.json") });
+        return factory;
+    }
+
+    @Bean
+    public UnmarshallerRepositoryPopulatorFactoryBean repositoryPopulator() {
+
+        Jaxb2Marshaller unmarshaller = new Jaxb2Marshaller();
+        unmarshaller.setClassesToBeBound(Fruit.class);
+
+        UnmarshallerRepositoryPopulatorFactoryBean factory = new UnmarshallerRepositoryPopulatorFactoryBean();
+        factory.setUnmarshaller(unmarshaller);
+        factory.setResources(new Resource[] { new ClassPathResource("apple-fruit-data.xml"), new ClassPathResource("guava-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/apple-fruit-data.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<fruit>
+    <id>1</id>
+    <name>apple</name>
+    <color>red</color>
+</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/guava-fruit-data.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<fruit>
+    <id>2</id>
+    <name>guava</name>
+    <color>green</color>
+</fruit>

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

@@ -0,0 +1,38 @@
+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", 2, fruits.size());
+
+        fruits.forEach(fruit -> {
+            if (1 == fruit.getId()) {
+                assertEquals("apple", fruit.getName());
+                assertEquals("red", fruit.getColor());
+            } else if (2 == fruit.getId()) {
+                assertEquals("guava", fruit.getName());
+                assertEquals("green", fruit.getColor());
+            }
+        });
+    }
+}