Course description
Hibernate is the primary JPA implementation and the most popular Java ORM framework. It dramatically reduces boilerplate code, eliminates vendor specific SQL, and eases the reading and writing of composite objects and specialisations to the database.
This JPA and Hibernate course delivered using JPA v3 and Hibernate v6, focuses on the practical aspects of using the framework as part of the technology stack. Attendees will learn how to persist the instances of classes that follow natural object-oriented idioms including composition and inheritance.
Exercises and examples are used throughout the course to give practical hands-on experience with the techniques covered.
Who will the Course Benefit?The JPA and Hibernate course is aimed at developers involved in the building of complex enterprise-level Java applications.
Course ObjectivesThis course aims to provide the delegate with the knowledge to be able to develop (or contribute to the development of) enterprise-level Java applications that use JPA and Hibernate to read from and write to relational databases.
Upcoming start dates
Suitability - Who should attend?
Delegates attending this course should be competent Java developers who have a good understanding of OO principles and are able to build simple applications that exploit APIs including Collections, IO, and JDBC in particular. This knowledge can be obtained by attendance on the pre-requisite Java Programming 1 / Java Developer course.
Experience to the level as demonstrated in this course is recommended:
- Java Programming 1 / Java Developer
Training Course Content
JPA and Hibernate Training Course
Course Contents - DAY 1
Course Introduction- Administration and Course Materials
- Course Structure and Agenda
- Delegate and Trainer Introductions
- The problems with JDBC
- About ORM
- The relationship between JPA and Hibernate
- Hibernate architecture
- Installing Hibernate
- Configuring the SessionFactory (XML and Java)
- Obtaining and using a Session (basic)
- About entity mapping
- XML mapping
- Annotation mapping
- Entity types
- Value types
- Embeddable types
- Collections
- Key generation
- About the Hibernate Session
- Transient, persistent, and detached entity states
- Hibernate transactions
- Using the Session to perform basic CRUD operations
Course Contents - DAY 2
Session 4: COMPOSITE MAPPING- About composite mapping
- One-to-one
- One-to-many
- Many-to-many
- Uni vs bi-directional associations
- Cascading
- Eager vs lazy fetching
- The n+1 problem
- About inheritance mapping
- Mapped superclass
- Single table
- Joined table
- Table per class
- Polymorphic queries
Course Contents - DAY 3
Session 6: HIBERNATE QUERY LANGAUGE (HQL)- About Hibernate Query Language (HQL)
- Basic queries
- Querying for a subset of the class's fields
- Literal, ordinal, and named parameters
- Single result queries
- Functions
- Queries with joins
- Eager fetching
- Ordering
- Grouping
- Native queries
- Named queries
- An introduction to criteria queries
- About the JPA EntityManager
- Configuring the EntityManagerFactory (XML and Java)
- Obtaining and using an EntityManager (basic)
- About the Persistence Context
- About the JPA Query Language (JPQL)
- JPA EntityManager vs Hibernate Session
- Discovering performance issues
- Choosing the right fetch type
- Query-specific fetching
- Using Sets, not Lists, for many-to-many associations
- Having the database do the heavy lifting
- First and second-level cache
- Performing bulk updates
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Reviews
Average rating 4.5
Great Instructor! Well spoken and easy to understand.
Continuing Studies
Further Learning
- Developing Applications with Java EE
- Core Spring (4 day)
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Good refresher on Hibernate. Always enjoy courses with Greg as he has a fresh way of teaching and a vast knowledge of the latest technology used on large enterprise projects.