Add AOT Repositories example.

Closes #695
2025-01-09 13:21:54 +01:00
parent e14503721a
commit 5a234bcef3
20 changed files with 1014 additions and 1 deletions
--- a/jpa/aot-generation/pom.xml
+++ b/jpa/aot-generation/pom.xml
@@ -0,0 +1,89 @@
+<?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>
+	<parent>
+		<groupId>org.springframework.data.examples</groupId>
+		<artifactId>spring-data-jpa-examples</artifactId>
+		<version>2.0.0.BUILD-SNAPSHOT</version>
+	</parent>
+
+	<groupId>org.example</groupId>
+	<artifactId>aot-generation</artifactId>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<hibernate.version>7.0.0.Beta5</hibernate.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.jspecify</groupId>
+			<artifactId>jspecify</artifactId>
+			<version>1.0.0</version>
+		</dependency>
+
+		<dependency>
+			<groupId>com.querydsl</groupId>
+			<artifactId>querydsl-jpa</artifactId>
+			<version>5.1.0</version>
+			<classifier>jakarta</classifier>
+		</dependency>
+		<dependency>
+			<groupId>com.querydsl</groupId>
+			<artifactId>querydsl-apt</artifactId>
+			<version>5.1.0</version>
+			<classifier>jakarta</classifier>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<configuration>
+					<annotationProcessorPaths>
+						<annotationProcessorPath>
+							<groupId>com.querydsl</groupId>
+							<artifactId>querydsl-jpa</artifactId>
+							<version>5.1.0</version>
+							<classifier>jakarta</classifier>
+						</annotationProcessorPath>
+						<annotationProcessorPath>
+							<groupId>com.querydsl</groupId>
+							<artifactId>querydsl-apt</artifactId>
+							<version>5.1.0</version>
+							<classifier>jakarta</classifier>
+						</annotationProcessorPath>
+						<annotationProcessorPath>
+							<groupId>jakarta.persistence</groupId>
+							<artifactId>jakarta.persistence-api</artifactId>
+							<version>3.2.0</version>
+						</annotationProcessorPath>
+					</annotationProcessorPaths>
+
+					<!-- Recommended: Some IDE's might require this configuration to include generated sources for IDE usage -->
+					<generatedTestSourcesDirectory>target/generated-test-sources
+					</generatedTestSourcesDirectory>
+					<generatedSourcesDirectory>target/generated-sources
+					</generatedSourcesDirectory>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<id>process-aot</id>
+						<goals>
+							<goal>process-aot</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>
--- a/jpa/aot-generation/src/main/java/example/springdata/aot/AotJpaApp.java
+++ b/jpa/aot-generation/src/main/java/example/springdata/aot/AotJpaApp.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example.springdata.aot;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * @author Christoph Strobl
+ */
+@SpringBootApplication
+public class AotJpaApp {
+
+    public static void main(String[] args) {
+        SpringApplication.run(AotJpaApp.class, args);
+    }
+}
--- a/jpa/aot-generation/src/main/java/example/springdata/aot/CLR.java
+++ b/jpa/aot-generation/src/main/java/example/springdata/aot/CLR.java
@@ -0,0 +1,124 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example.springdata.aot;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Slice;
+import org.springframework.stereotype.Component;
+
+/**
+ * @author Christoph Strobl
+ * @since 2025/01
+ */
+@Component
+public class CLR implements CommandLineRunner {
+
+    @Autowired UserRepository repository;
+
+    @Override
+    public void run(String... args) throws Exception {
+
+        User luke = new User("id-1", "luke");
+        luke.setFirstname("Luke");
+        luke.setLastname("Skywalker");
+//        Post lukeP1 = new Post("I have a bad feeling about this.");
+//        em.persist(lukeP1);
+//        luke.setPosts(List.of(lukeP1));
+
+        User leia = new User("id-2", "leia");
+        leia.setFirstname("Leia");
+        leia.setLastname("Organa");
+
+        User han = new User("id-3", "han");
+        han.setFirstname("Han");
+        han.setLastname("Solo");
+//        Post hanP1 = new Post("It's the ship that made the Kessel Run in less than 12 Parsecs.");
+//        em.persist(hanP1);
+//        han.setPosts(List.of(hanP1));
+
+        User chewbacca = new User("id-4", "chewbacca");
+        User yoda = new User("id-5", "yoda");
+        Post yodaP1 = new Post("Do. Or do not. There is no try.");
+        Post yodaP2 = new Post("Decide you must, how to serve them best. If you leave now, help them you could; but you would destroy all for which they have fought, and suffered.");
+//        em.persist(yodaP1);
+//        em.persist(yodaP2);
+//        yoda.setPosts(List.of(yodaP1, yodaP2));
+
+        User vader = new User("id-6", "vader");
+        vader.setFirstname("Anakin");
+        vader.setLastname("Skywalker");
+//        Post vaderP1 = new Post("I am your father");
+//        em.persist(vaderP1);
+//        vader.setPosts(List.of(vaderP1));
+
+        User kylo = new User("id-7", "kylo");
+        kylo.setFirstname("Ben");
+        kylo.setLastname("Solo");
+
+        repository.saveAll(List.of(luke, leia, han, chewbacca, yoda, vader, kylo));
+
+        System.out.println("------- annotated multi -------");
+        System.out.println(repository.usersWithUsernamesStartingWith("l"));
+
+        System.out.println("------- derived single -------");
+        System.out.println(repository.findUserByUsername("yoda"));
+
+//        System.out.println("------- derived nested.path -------");
+//        System.out.println(repository.findUserByPostsMessageLike("father"));
+
+        System.out.println("------- derived optional -------");
+        System.out.println(repository.findOptionalUserByUsername("yoda"));
+
+        System.out.println("------- derived count -------");
+        Long count = repository.countUsersByLastnameLike("Sky");
+        System.out.println("user count " + count);
+
+        System.out.println("------- derived exists -------");
+        Boolean exists = repository.existsByUsername("vader");
+        System.out.println("user exists " + exists);
+
+        System.out.println("------- derived multi -------");
+        System.out.println(repository.findUserByLastnameStartingWith("Sky"));
+
+        System.out.println("------- derived sorted -------");
+        System.out.println(repository.findUserByLastnameStartingWithOrderByFirstname("Sky"));
+
+        System.out.println("------- derived page -------");
+        Page<User> page0 = repository.findUserByLastnameStartingWith("S", PageRequest.of(0, 2));
+        System.out.println("page0: " + page0);
+        System.out.println("page0.content: " + page0.getContent());
+
+        Page<User> page1 = repository.findUserByLastnameStartingWith("S", PageRequest.of(1, 2));
+        System.out.println("page1: " + page1);
+        System.out.println("page1.content: " + page1.getContent());
+
+        System.out.println("------- derived slice -------");
+        Slice<User> slice0 = repository.findUserByUsernameAfter("luke", PageRequest.of(0, 2));
+        System.out.println("slice0: " + slice0);
+        System.out.println("slice0.content: " + slice0.getContent());
+
+        System.out.println("------- derived top -------");
+        System.out.println(repository.findTop2UsersByLastnameStartingWith("S"));
+
+//        System.out.println("------- derived with fields -------");
+//        System.out.println(repository.findJustUsernameBy());
+    }
+}
--- a/jpa/aot-generation/src/main/java/example/springdata/aot/Post.java
+++ b/jpa/aot-generation/src/main/java/example/springdata/aot/Post.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example.springdata.aot;
+
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+import java.util.Random;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+
+/**
+ * @author Christoph Strobl
+ * @since 2025/01
+ */
+@Entity
+public class Post {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    private String message;
+    private Instant date;
+
+    public Post() {
+    }
+
+    public Post(String message) {
+        this.message = message;
+        this.date = Instant.now().minus(new Random().nextLong(100), ChronoUnit.MINUTES);
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public Instant getDate() {
+        return date;
+    }
+
+    public void setDate(Instant date) {
+        this.date = date;
+    }
+
+    @Override
+    public String toString() {
+        return message;
+    }
+}
--- a/jpa/aot-generation/src/main/java/example/springdata/aot/User.java
+++ b/jpa/aot-generation/src/main/java/example/springdata/aot/User.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example.springdata.aot;
+
+import java.time.Instant;
+import java.util.List;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.OneToMany;
+
+/**
+ * @author Christoph Strobl
+ * @since 2025/01
+ */
+@Entity(name = "users")
+public class User {
+
+    @Id
+    private String id;
+    private String username;
+
+    @Column(name = "first_name") String firstname;
+    @Column(name = "last_name") String lastname;
+
+//    @OneToMany
+//    private List<Post> posts;
+
+    Instant registrationDate;
+    Instant lastSeen;
+
+    public User() {
+    }
+
+    public User(String id, String username) {
+        this.id = id;
+        this.username = username;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public String getFirstname() {
+        return firstname;
+    }
+
+    public void setFirstname(String firstname) {
+        this.firstname = firstname;
+    }
+
+    public String getLastname() {
+        return lastname;
+    }
+
+    public void setLastname(String lastname) {
+        this.lastname = lastname;
+    }
+
+    public Instant getRegistrationDate() {
+        return registrationDate;
+    }
+
+    public void setRegistrationDate(Instant registrationDate) {
+        this.registrationDate = registrationDate;
+    }
+
+    public Instant getLastSeen() {
+        return lastSeen;
+    }
+
+    public void setLastSeen(Instant lastSeen) {
+        this.lastSeen = lastSeen;
+    }
+
+//    public List<Post> getPosts() {
+//        return posts;
+//    }
+//
+//    public void setPosts(List<Post> posts) {
+//        this.posts = posts;
+//    }
+
+    @Override
+    public String toString() {
+        return "User{" +
+            "id='" + id + '\'' +
+            ", username='" + username + '\'' +
+            ", firstname='" + firstname + '\'' +
+            ", lastname='" + lastname + '\'' +
+            ", registrationDate=" + registrationDate +
+            ", lastSeen=" + lastSeen +
+//            ", posts=" + posts +
+            '}';
+    }
+}
--- a/jpa/aot-generation/src/main/java/example/springdata/aot/UserProjection.java
+++ b/jpa/aot-generation/src/main/java/example/springdata/aot/UserProjection.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example.springdata.aot;
+
+import java.time.Instant;
+
+/**
+ * @author Christoph Strobl
+ * @since 2025/01
+ */
+public record UserProjection(String username, Instant registrationDate) {
+
+}
--- a/jpa/aot-generation/src/main/java/example/springdata/aot/UserRepository.java
+++ b/jpa/aot-generation/src/main/java/example/springdata/aot/UserRepository.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example.springdata.aot;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Slice;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.data.repository.CrudRepository;
+
+/**
+ * @author Christoph Strobl
+ * @since 2025/01
+ */
+public interface UserRepository extends CrudRepository<User, String>, QuerydslPredicateExecutor<User> {
+
+    User findUserByUsername(String username);
+
+    Optional<User> findOptionalUserByUsername(String username);
+
+    Long countUsersByLastnameLike(String lastname);
+
+    Boolean existsByUsername(String username);
+
+    List<User> findUserByLastnameLike(String lastname);
+
+    List<User> findUserByLastnameStartingWithOrderByFirstname(String lastname);
+
+    List<User> findTop2UsersByLastnameStartingWith(String lastname);
+
+    Slice<User> findUserByUsernameAfter(String username, Pageable pageable);
+
+    List<User> findUserByLastnameStartingWith(String lastname);
+
+    Page<User> findUserByLastnameStartingWith(String lastname, Pageable page);
+
+    @Query("SELECT u FROM example.springdata.aot.User u WHERE u.username LIKE ?1%")
+    List<User> usersWithUsernamesStartingWith(String username);
+
+}
--- a/jpa/aot-generation/src/main/resources/application.properties
+++ b/jpa/aot-generation/src/main/resources/application.properties
@@ -0,0 +1,5 @@
+spring.jpa.defer-datasource-initialization=true
+spring.jpa.properties.hibernate.boot.allow_jdbc_metadata_access=false
+spring.aot.repositories.enabled=true
+#logging.level.org.springframework.data.repository.aot.generate.RepositoryContributor=trace
+
--- a/jpa/pom.xml
+++ b/jpa/pom.xml
@@ -29,6 +29,7 @@
 		<module>vavr</module>
 		<module>multitenant</module>
 		<module>graalvm-native</module>
+		<module>aot-generation</module>
 	</modules>

 	<dependencies>
@@ -38,6 +39,24 @@
 			<artifactId>spring-boot-starter-data-jpa</artifactId>
 		</dependency>

+		<dependency>
+			<groupId>org.springframework.data</groupId>
+			<artifactId>spring-data-commons</artifactId>
+			<version>4.0.0-SNAPSHOT</version>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.data</groupId>
+			<artifactId>spring-data-jpa</artifactId>
+			<version>4.0.0-SNAPSHOT</version>
+		</dependency>
+
+		<dependency>
+			<groupId>jakarta.persistence</groupId>
+			<artifactId>jakarta.persistence-api</artifactId>
+			<version>3.2.0</version>
+		</dependency>
+
 		<dependency>
 			<groupId>org.hsqldb</groupId>
 			<artifactId>hsqldb</artifactId>
--- a/mongodb/aot-generation/pom.xml
+++ b/mongodb/aot-generation/pom.xml
@@ -0,0 +1,71 @@
+<?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>
+    <parent>
+        <groupId>org.springframework.data.examples</groupId>
+        <artifactId>spring-data-mongodb-examples</artifactId>
+        <version>2.0.0.BUILD-SNAPSHOT</version>
+    </parent>
+
+    <groupId>org.example</groupId>
+    <artifactId>aot-generation</artifactId>
+
+    <properties>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-commons</artifactId>
+            <version>4.0.x-GENERATED-REPOSITORIES-SNAPSHOT</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-mongodb</artifactId>
+            <version>5.0.0-GENERATED-REPOSITORIES-SNAPSHOT</version>
+        </dependency>
+        <dependency>
+            <groupId>org.mongodb</groupId>
+            <artifactId>bson</artifactId>
+            <version>5.3.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.mongodb</groupId>
+            <artifactId>mongodb-driver-core</artifactId>
+            <version>5.3.1</version>
+        </dependency>   
+        <dependency>
+            <groupId>org.mongodb</groupId>
+            <artifactId>mongodb-driver-sync</artifactId>
+            <version>5.3.1</version>
+        </dependency> 
+        <dependency>
+            <groupId>org.jspecify</groupId>
+            <artifactId>jspecify</artifactId>
+            <version>1.0.0</version>
+        </dependency> 
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>process-aot</id>
+                        <goals>
+                            <goal>process-aot</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
--- a/mongodb/aot-generation/src/main/java/example/springdata/aot/App.java
+++ b/mongodb/aot-generation/src/main/java/example/springdata/aot/App.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example.springdata.aot;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * @author Christoph Strobl
+ */
+@SpringBootApplication
+public class App {
+
+    public static void main(String[] args) {
+        SpringApplication.run(App.class, args);
+    }
+}
--- a/mongodb/aot-generation/src/main/java/example/springdata/aot/CLR.java
+++ b/mongodb/aot-generation/src/main/java/example/springdata/aot/CLR.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example.springdata.aot;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Slice;
+import org.springframework.stereotype.Component;
+
+/**
+ * @author Christoph Strobl
+ * @since 2025/01
+ */
+@Component
+public class CLR implements CommandLineRunner {
+
+    @Autowired UserRepository repository;
+
+    @Override
+    public void run(String... args) throws Exception {
+
+        User luke = new User("id-1", "luke");
+        luke.setFirstname("Luke");
+        luke.setLastname("Skywalker");
+        luke.setPosts(List.of(new Post("I have a bad feeling about this.")));
+
+        User leia = new User("id-2", "leia");
+        leia.setFirstname("Leia");
+        leia.setLastname("Organa");
+
+        User han = new User("id-3", "han");
+        han.setFirstname("Han");
+        han.setLastname("Solo");
+        han.setPosts(List.of(new Post("It's the ship that made the Kessel Run in less than 12 Parsecs.")));
+
+        User chewbacca = new User("id-4", "chewbacca");
+        User yoda = new User("id-5", "yoda");
+        yoda.setPosts(List.of(new Post("Do. Or do not. There is no try."), new Post("Decide you must, how to serve them best. If you leave now, help them you could; but you would destroy all for which they have fought, and suffered.")));
+
+        User vader = new User("id-6", "vader");
+        vader.setFirstname("Anakin");
+        vader.setLastname("Skywalker");
+        vader.setPosts(List.of(new Post("I am your father")));
+
+        User kylo = new User("id-7", "kylo");
+        kylo.setFirstname("Ben");
+        kylo.setLastname("Solo");
+
+        repository.saveAll(List.of(luke, leia, han, chewbacca, yoda, vader, kylo));
+
+        System.out.println("------- annotated multi -------");
+        System.out.println(repository.usersWithUsernamesStartingWith("l"));
+
+        System.out.println("------- derived single -------");
+        System.out.println(repository.findUserByUsername("yoda"));
+
+        System.out.println("------- derived nested.path -------");
+        System.out.println(repository.findUserByPostsMessageLike("father"));
+
+        System.out.println("------- derived optional -------");
+        System.out.println(repository.findOptionalUserByUsername("yoda"));
+
+        System.out.println("------- derived count -------");
+        Long count = repository.countUsersByLastnameLike("Sky");
+        System.out.println("user count " + count);
+
+        System.out.println("------- derived exists -------");
+        Boolean exists = repository.existsByUsername("vader");
+        System.out.println("user exists " + exists);
+
+        System.out.println("------- derived multi -------");
+        System.out.println(repository.findUserByLastnameLike("Sky"));
+
+        System.out.println("------- derived sorted -------");
+        System.out.println(repository.findUserByLastnameLikeOrderByFirstname("Sky"));
+
+        System.out.println("------- derived page -------");
+        Page<UserProjection> page0 = repository.findUserByLastnameStartingWith("S", PageRequest.of(0, 2));
+        System.out.println("page0: " + page0);
+        System.out.println("page0.content: " + page0.getContent());
+
+        Page<UserProjection> page1 = repository.findUserByLastnameStartingWith("S", PageRequest.of(1, 2));
+        System.out.println("page1: " + page1);
+        System.out.println("page1.content: " + page1.getContent());
+
+        System.out.println("------- derived slice -------");
+        Slice<User> slice0 = repository.findUserByUsernameAfter("luke", PageRequest.of(0, 2));
+        System.out.println("slice0: " + slice0);
+        System.out.println("slice0.content: " + slice0.getContent());
+
+        System.out.println("------- derived top -------");
+        System.out.println(repository.findTop2UsersByLastnameLike("S"));
+
+        System.out.println("------- derived with fields -------");
+        System.out.println(repository.findJustUsernameBy());
+    }
+}
--- a/mongodb/aot-generation/src/main/java/example/springdata/aot/Post.java
+++ b/mongodb/aot-generation/src/main/java/example/springdata/aot/Post.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example.springdata.aot;
+
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+import java.util.Random;
+
+/**
+ * @author Christoph Strobl
+ * @since 2025/01
+ */
+public class Post {
+
+    private String message;
+    private Instant date;
+
+    public Post(String message) {
+        this.message = message;
+        this.date = Instant.now().minus(new Random().nextLong(100), ChronoUnit.MINUTES);
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public Instant getDate() {
+        return date;
+    }
+
+    public void setDate(Instant date) {
+        this.date = date;
+    }
+
+    @Override
+    public String toString() {
+        return message;
+    }
+}
--- a/mongodb/aot-generation/src/main/java/example/springdata/aot/User.java
+++ b/mongodb/aot-generation/src/main/java/example/springdata/aot/User.java
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example.springdata.aot;
+
+import java.time.Instant;
+import java.util.List;
+
+import org.springframework.data.mongodb.core.mapping.Field;
+
+/**
+ * @author Christoph Strobl
+ * @since 2025/01
+ */
+public class User {
+
+    private final String id;
+    private final String username;
+
+    @Field("first_name") String firstname;
+    @Field("last_name") String lastname;
+
+    private List<Post> posts;
+
+    Instant registrationDate;
+    Instant lastSeen;
+
+    public User(String id, String username) {
+        this.id = id;
+        this.username = username;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public String getFirstname() {
+        return firstname;
+    }
+
+    public void setFirstname(String firstname) {
+        this.firstname = firstname;
+    }
+
+    public String getLastname() {
+        return lastname;
+    }
+
+    public void setLastname(String lastname) {
+        this.lastname = lastname;
+    }
+
+    public Instant getRegistrationDate() {
+        return registrationDate;
+    }
+
+    public void setRegistrationDate(Instant registrationDate) {
+        this.registrationDate = registrationDate;
+    }
+
+    public Instant getLastSeen() {
+        return lastSeen;
+    }
+
+    public void setLastSeen(Instant lastSeen) {
+        this.lastSeen = lastSeen;
+    }
+
+    public List<Post> getPosts() {
+        return posts;
+    }
+
+    public void setPosts(List<Post> posts) {
+        this.posts = posts;
+    }
+
+    @Override
+    public String toString() {
+        return "User{" +
+            "id='" + id + '\'' +
+            ", username='" + username + '\'' +
+            ", firstname='" + firstname + '\'' +
+            ", lastname='" + lastname + '\'' +
+            ", registrationDate=" + registrationDate +
+            ", lastSeen=" + lastSeen +
+            ", posts=" + posts +
+            '}';
+    }
+}
--- a/mongodb/aot-generation/src/main/java/example/springdata/aot/UserProjection.java
+++ b/mongodb/aot-generation/src/main/java/example/springdata/aot/UserProjection.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example.springdata.aot;
+
+import java.time.Instant;
+
+/**
+ * @author Christoph Strobl
+ * @since 2025/01
+ */
+public interface UserProjection {
+
+    String getUsername();
+    Instant getRegistrationDate();
+}
--- a/mongodb/aot-generation/src/main/java/example/springdata/aot/UserRepository.java
+++ b/mongodb/aot-generation/src/main/java/example/springdata/aot/UserRepository.java
@@ -0,0 +1,44 @@
+package example.springdata.aot;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Slice;
+import org.springframework.data.mongodb.repository.Query;
+import org.springframework.data.repository.CrudRepository;
+
+/**
+ * @author Christoph Strobl
+ * @since 2025/01
+ */
+public interface UserRepository extends CrudRepository<User, String> {
+
+    User findUserByUsername(String username);
+
+    Optional<User> findOptionalUserByUsername(String username);
+
+    Long countUsersByLastnameLike(String lastname);
+
+    Boolean existsByUsername(String username);
+
+    List<User> findUserByLastnameLike(String lastname);
+
+    List<User> findUserByPostsMessageLike(String part);
+
+    List<User> findUserByLastnameLikeOrderByFirstname(String lastname);
+
+    List<User> findTop2UsersByLastnameLike(String lastname);
+
+    Slice<User> findUserByUsernameAfter(String username, Pageable pageable);
+
+    Page<UserProjection> findUserByLastnameStartingWith(String lastname, Pageable page);
+
+    @Query("{ 'username' :  { $regex: '?0.*', $options: 'i' } }")
+    List<UserProjection> usersWithUsernamesStartingWith(String username);
+
+    @Query(fields = "{ 'username' :  1 }", sort = "{ 'username' :  -1 }")
+    List<User> findJustUsernameBy();
+
+}
--- a/mongodb/aot-generation/src/main/resources/logback.xml
+++ b/mongodb/aot-generation/src/main/resources/logback.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+
+	<appender name="console" class="ch.qos.logback.core.ConsoleAppender">
+		<encoder>
+			<pattern>%d %5p %40.40c:%4L - %m%n</pattern>
+		</encoder>
+	</appender>
+
+	<appender name="no-op" class="ch.qos.logback.core.helpers.NOPAppender" />
+
+	<!--
+	<logger name="org.springframework" level="debug" />
+	 -->
+
+	<logger name="org.springframework.data.mongodb.core" level="error"/>
+	<logger name="org.springframework.data.mongodb.core.mapping.event.AbstractMongoEventListener" level="debug" additivity="false">
+		<appender-ref ref="no-op" />
+	</logger>
+	<logger name="org.springframework.boot.autoconfigure.logging.ConditionEvaluationReportLogger" level="warn" />
+	<logger name="org.springframework.data.mongodb.test.util" level="info"/>
+	<logger name="org.springframework.data.repository.aot.generate.RepositoryContributor" level="trace" />
+	<logger name="example.springdata.aot" level="debug" />
+	<root level="warn">
+		<appender-ref ref="console" />
+	</root>
+
+</configuration>
--- a/mongodb/aot-generation/src/main/resources/spring.properties
+++ b/mongodb/aot-generation/src/main/resources/spring.properties
@@ -0,0 +1 @@
+spring.aot.repositories.enabled=true
--- a/mongodb/pom.xml
+++ b/mongodb/pom.xml
@@ -36,7 +36,8 @@
 		<module>linking</module>
 		<module>util</module>
 		<module>fragment-spi</module>
-	</modules>
+        <module>aot-generation</module>
+    </modules>

 	<dependencyManagement>
 		<dependencies>
--- a/pom.xml
+++ b/pom.xml
@@ -37,7 +37,10 @@
 	<properties>
 		<apt.version>1.1.3</apt.version>
 		<jvm.enable-preview></jvm.enable-preview>
+		<maven.compiler.source>21</maven.compiler.source>
+		<maven.compiler.target>21</maven.compiler.target>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<spring-data-bom.version>2025.1.0-SNAPSHOT</spring-data-bom.version>
 	</properties>

 	<profiles>