Hibernate 5 to 6 Upgrade Skill

Overview

Spring Boot 3 uses Hibernate 6, which includes significant changes from Hibernate 5. This skill covers the key migration considerations.

Example Migration

// Before (Hibernate 5 with custom type)
@TypeDef(name = "json", typeClass = JsonType.class)
@Type(type = "json")
private JsonNode metadata;

// After (Hibernate 6)
@JdbcTypeCode(SqlTypes.JSON)
private JsonNode metadata;