[BAEL-9370] Introduced module with spring-data-jpa repositories:

- one not using AOT at all
- one using AOT
- one using AOT AND AOT repositories

Will compare the performance of each solution

Author: bpstelios10

persistence-modules/pom.xml

@@ -109,6 +109,7 @@
         <module>spring-data-jpa-repo</module>
         <module>spring-data-jpa-repo-2</module>
         <module>spring-data-jpa-repo-4</module>
+        <module>spring-data-jpa-repo-5</module>
         <module>spring-data-jdbc</module>
         <module>spring-data-jpa-simple</module>
         <module>spring-data-keyvalue</module>

persistence-modules/spring-data-jpa-repo-5/pom.xml

@@ -0,0 +1,27 @@
+<?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>
+    <groupId>com.baeldung</groupId>
+    <artifactId>spring-data-jpa-repo-5</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <packaging>pom</packaging>
+
+    <modules>
+        <module>spring-data-jpa-aot</module>
+        <module>spring-data-jpa-aot-repository</module>
+        <module>spring-data-jpa-not-aot</module>
+    </modules>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>4.0.0-RC1</version>
+    </parent>
+
+    <properties>
+        <java.version>25</java.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+</project>

persistence-modules/spring-data-jpa-repo-5/spring-data-jpa-aot-repository/README.md

@@ -0,0 +1,34 @@
+Compile AOT
+
+```shell
+mvn clean install -Paot-repo
+```
+
+Compilation time: `14.200 s`
+
+1) run using maven and the spring-boot plugin:
+
+```shell
+mvn spring-boot:run -Dspring.aot.enabled=true -Dspring.aot.repositories.enabled=true
+```
+
+Startup times:
+`Root WebApplicationContext: initialization completed in 477 ms`
+`Started Application in 2.031 seconds`
+
+2) run using the jar (same as 1 mostly)
+
+```shell
+java -Dspring.aot.enabled=true \
+     -Dspring.aot.repositories.enabled=true \
+     -agentlib:native-image-agent=config-output-dir=target/native-image-hints \
+     -jar target/spring-data-jpa-aot-repository-0.0.1-SNAPSHOT.jar
+```
+
+Startup times:
+`Root WebApplicationContext: initialization completed in 452 ms`
+`Started Application in 3.26 seconds`
+
+**NOTE**:
+AOT is a mandatory step to transform a Spring application to a native executable, so it is automatically enabled when running within a native image. However it is also possible to use AOT optimizations on the JVM by setting the spring.aot.enabled System
+property to true.

persistence-modules/spring-data-jpa-repo-5/spring-data-jpa-aot-repository/pom.xml

@@ -0,0 +1,67 @@
+<?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>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>spring-data-jpa-repo-5</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../spring-data-jpa-repo-5</relativePath>
+    </parent>
+
+    <artifactId>spring-data-jpa-aot-repository</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <profiles>
+        <profile>
+            <id>aot-repo</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.springframework.boot</groupId>
+                        <artifactId>spring-boot-maven-plugin</artifactId>
+                        <configuration>
+                            <mainClass>com.baeldung.spring.aotrepository.Application</mainClass>
+                            <jvmArguments>
+                                -agentlib:native-image-agent=config-output-dir=target/native-image-hints/
+                            </jvmArguments>
+                        </configuration>
+                        <executions>
+                            <execution>
+                                <id>process-aot</id>
+                                <goals>
+                                    <goal>process-aot</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+</project>

persistence-modules/spring-data-jpa-repo-5/spring-data-jpa-aot-repository/src/main/java/com/baeldung/spring/aotrepository/Application.java

@@ -0,0 +1,18 @@
+package com.baeldung.spring.aotrepository;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+    private static final Log logger = LogFactory.getLog(Application.class);
+
+    public static void main(String[] args) {
+        logger.info("Application starts..");
+
+        SpringApplication.run(Application.class, args);
+    }
+}

persistence-modules/spring-data-jpa-repo-5/spring-data-jpa-aot-repository/src/main/java/com/baeldung/spring/aotrepository/entity/Address.java

@@ -0,0 +1,57 @@
+package com.baeldung.spring.aotrepository.entity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "ADDRESS")
+public class Address {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+    private String street;
+    private String city;
+    @Column(name = "post_code")
+    private String postCode;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getStreet() {
+        return street;
+    }
+
+    public void setStreet(String street) {
+        this.street = street;
+    }
+
+    public String getCity() {
+        return city;
+    }
+
+    public void setCity(String city) {
+        this.city = city;
+    }
+
+    public String getPostCode() {
+        return postCode;
+    }
+
+    public void setPostCode(String postCode) {
+        this.postCode = postCode;
+    }
+
+    @Override
+    public String toString() {
+        return "User[id=" + id + ", street=" + street + ", city=" + city + ", postCode=" + postCode + "]";
+    }
+}

persistence-modules/spring-data-jpa-repo-5/spring-data-jpa-aot-repository/src/main/java/com/baeldung/spring/aotrepository/entity/Inventory.java

@@ -0,0 +1,35 @@
+package com.baeldung.spring.aotrepository.entity;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "INVENTORY")
+public class Inventory {
+
+    @Id
+    private Long productId;
+    private Long balance;
+
+    public Long getProductId() {
+        return productId;
+    }
+
+    public void setProductId(Long productId) {
+        this.productId = productId;
+    }
+
+    public Long getBalance() {
+        return balance;
+    }
+
+    public void setBalance(Long balance) {
+        this.balance = balance;
+    }
+
+    @Override
+    public String toString() {
+        return "Order [productId=" + productId + ", balance=" + balance + "]";
+    }
+}

persistence-modules/spring-data-jpa-repo-5/spring-data-jpa-aot-repository/src/main/java/com/baeldung/spring/aotrepository/entity/Order.java

@@ -0,0 +1,44 @@
+package com.baeldung.spring.aotrepository.entity;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "ORDERS")
+public class Order {
+
+    @Id
+    private Long id;
+    private String productId;
+    private Long amount;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long orderId) {
+        this.id = orderId;
+    }
+
+    public String getProductId() {
+        return productId;
+    }
+
+    public void setProductId(String productId) {
+        this.productId = productId;
+    }
+
+    public Long getAmount() {
+        return amount;
+    }
+
+    public void setAmount(Long amount) {
+        this.amount = amount;
+    }
+
+    @Override
+    public String toString() {
+        return "Order [productId=" + productId + ", id=" + id + ", amount=" + amount + "]";
+    }
+}

persistence-modules/spring-data-jpa-repo-5/spring-data-jpa-aot-repository/src/main/java/com/baeldung/spring/aotrepository/entity/Product.java

@@ -0,0 +1,55 @@
+package com.baeldung.spring.aotrepository.entity;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "PRODUCTS")
+public class Product {
+
+    @Id
+    private Long id;
+    private String name;
+    private double price;
+
+    public Product() {
+        super();
+    }
+
+    private Product(Long id, String name, double price) {
+        super();
+        this.id = id;
+        this.name = name;
+        this.price = price;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(final Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(final String name) {
+        this.name = name;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    public void setPrice(final double price) {
+        this.price = price;
+    }
+
+    @Override
+    public String toString() {
+        return "Product [name=" + name + ", id=" + id + ", price=" + price + "]";
+    }
+}