Polishing.

See #695

jpa/aot-optimization/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());
+    }
+}