Add hibernate-demo: get() vs load(), merge() vs refresh(), inserting objects (Hibernate 7.4.1.Final + Spring Boot 4.1.0)

pom.xml

@@ -0,0 +1,66 @@
+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.springframework.boot</groupId>
+    <artifactId>spring-boot-starter-parent</artifactId>
+    <version>4.1.0</version>
+    <relativePath/>
+  </parent>
+
+  <groupId>com.ankurm</groupId>
+  <artifactId>hibernate-demo</artifactId>
+  <version>1.0.0</version>
+  <name>hibernate-demo</name>
+  <description>
+    Companion repository for the ankurm.com Hibernate 7 batch: get() vs load(), merge() vs
+    refresh(), and inserting objects efficiently.
+  </description>
+
+  <properties>
+    <java.version>25</java.version>
+    <!--
+      Spring Boot 4.1.0's own dependency management already resolves hibernate.version to
+      7.4.1.Final (checked in spring-boot-dependencies-4.1.0.pom before writing a line of code
+      here). This property is declared anyway, not to override anything, but so the pin is
+      visible in the POM and survives a future Boot patch release quietly bumping it under us.
+      See docs/00-versions.md for the two Boot releases (4.1.0 and 4.1.1) that resolve to two
+      different Hibernate patch versions from the same "4.1" line.
+      -->
+    <hibernate.version>7.4.1.Final</hibernate.version>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter</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>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-maven-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>