Java Persistence with Hibernate, Second Edition
Christian Bauer, Gavin King, and Gary Gregory
  • October 2015
  • ISBN 9781617290459
  • 608 pages
  • printed in black & white
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The most comprehensive book about Hibernate Persistence ... works well both as a tutorial and as a reference.

Sergio Fernandez Gonzalez, Accenture Software

Java Persistence with Hibernate, Second Edition explores Hibernate by developing an application that ties together hundreds of individual examples. In this revised edition, authors Christian Bauer, Gavin King, and Gary Gregory cover Hibernate 5 in detail with the Java Persistence 2.1 standard (JSR 338). All examples have been updated for the latest Hibernate and Java EE specification versions.

About the Technology

Persistence--the ability of data to outlive an instance of a program--is central to modern applications. Hibernate, the most popular Java persistence tool, offers automatic and transparent object/relational mapping, making it a snap to work with SQL databases in Java applications.

About the book

Java Persistence with Hibernate, Second Edition explores Hibernate by developing an application that ties together hundreds of individual examples. You'll immediately dig into the rich programming model of Hibernate, working through mappings, queries, fetching strategies, transactions, conversations, caching, and more. Along the way you'll find a well-illustrated discussion of best practices in database design and optimization techniques. In this revised edition, authors Christian Bauer, Gavin King, and Gary Gregory cover Hibernate 5 in detail with the Java Persistence 2.1 standard (JSR 338). All examples have been updated for the latest Hibernate and Java EE specification versions.
Table of Contents detailed table of contents

foreword to the first edition



about this book

author online

about the authors

about the cover illustration

Part 1: Getting started with ORM

1. Understanding object/relational persistence

1.1. What is persistence?

1.1.1. Relational databases

1.1.2. Understanding SQL

1.1.3. Using SQL in Java

1.2. The paradigm mismatch

1.2.1. The problem of granularity

1.2.2. The problem of subtypes

1.2.3. The problem of identity

1.2.4. Problems relating to associations

1.2.5. The problem of data navigation

1.3. ORM and JPA

1.4. Summary

2. Starting a project

2.1. Introducing Hibernate

2.2. "Hello World" with JPA

2.2.1. Configuring a persistence unit

2.2.2. Writing a persistent class

2.2.3. Storing and loading messages

2.3. Native Hibernate configuration

2.4. Summary

3. Domain models and metadata

3.1. The example CaveatEmptor application

3.1.1. A layered architecture

3.1.2. Analyzing the business domain

3.1.3. The CaveatEmptor domain model

3.2. Implementing the domain model

3.2.1. Addressing leakage of concerns

3.2.2. Transparent and automated persistence

3.2.3. Writing persistence-capable classes

3.2.4. Implementing POJO associations

3.3. Domain model metadata

3.3.1. Annotation-based metadata

3.3.2. Applying Bean Validation rules

3.3.3. Externalizing metadata with XML files

3.3.4. Accessing metadata at runtime

3.4. Summary

Part 2: Mapping strategies

4. Mapping persistent classes

4.1. Understanding entities and value types

4.1.1. Fine-grained domain models

4.1.2. Defining application concepts

4.1.3. Distinguishing entities and value types

4.2. Mapping entities with identity

4.2.1. Understanding Java identity and equality

4.2.2. A first entity class and mapping

4.2.3. Selecting a primary key

4.2.4. Configuring key generators

4.2.5. Identifier generator strategies

4.3. Entity mapping options

4.3.1. Controlling names

4.3.2. Dynamic SQL generation

4.3.3. Making an entity immutable

4.3.4. Mapping an entity to a subselect

4.4. Summary

5. Mapping value types

5.1. Mapping basic properties

5.1.1. Overriding basic property defaults

5.1.2. Customizing property access

5.1.3. Using derived properties

5.1.4. Transforming column values

5.1.5. Generated and default property values

5.1.6. Temporal properties

5.1.7. Mapping enumerations

5.2. Mapping embeddable components

5.2.1. The database schema

5.2.2. Making classes embeddable

5.2.3. Overriding embedded attributes

5.2.4. Mapping nested embedded components

5.3. Mapping Java and SQL types with converters

5.3.1. Built-in types

5.3.2. Creating custom JPA converters

5.3.3. Extending Hibernate with UserTypes

5.4. Summary

6. Mapping inheritance

6.1. Table per concrete class with implicit polymorphism

6.2. Table per concrete class with unions

6.3. Table per class hierarchy

6.4. Table per subclass with joins

6.5. Mixing inheritance strategies

6.6. Inheritance of embeddable classes

6.7. Choosing a strategy

6.8. Polymorphic associations

6.8.1. Polymorphic many-to-one associations

6.8.2. Polymorphic collections

6.9. Summary

7. Mapping collections and entity associations

7.1. Sets, bags, lists, and maps of value types

7.1.1. The database schema

7.1.2. Creating and mapping a collection property

7.1.3. Selecting a collection interface

7.1.4. Mapping a set

7.1.5. Mapping an identifier bag

7.1.6. Mapping a list

7.1.7. Mapping a map

7.1.8. Sorted and ordered collections

7.2. Collections of components

7.2.1. Equality of component instances

7.2.2. Set of components

7.2.3. Bag of components

7.2.4. Map of component values

7.2.5. Components as map keys

7.2.6. Collection in an embeddable component

7.3. Mapping entity associations

7.3.1. The simplest possible association

7.3.2. Making it bidirectional

7.3.3. Cascading state

7.4. Summary

8. Advanced entity association mappings

8.1. One-to-one associations

8.1.1. Sharing a primary key

8.1.2. The foreign primary key generator

8.1.3. Using a foreign key join column

8.1.4. Using a join table

8.2. One-to-many associations

8.2.1. Considering one-to-many bags

8.2.2. Uni-directional and bidirectional list mappings

8.2.3. Optional one-to-many with a join table

8.2.4. One-to-many association in an embeddable class

8.3. Many-to-many and ternary associations

8.3.1. Uni- and bidirectional many-to-many

8.3.2. Many-to-many with an intermediate entity

8.3.3. Ternary associations with components

8.4. Entity associations with Maps

8.4.1. One-to-many with property key

8.4.2. Key/Value ternary relationship

8.5. Summary

9. Complex and legacy schemas

9.1. Improving the database schema

9.1.1. Adding auxiliary database objects

9.1.2. SQL constraints

9.1.3. Creating indexes

9.2. Handling legacy keys

9.2.1. Mapping a natural primary key

9.2.2. Mapping a composite primary key

9.2.3. Foreign keys in composite primary keys

9.2.4. Foreign keys to composite primary keys

9.2.5. Foreign key referencing non-primary keys

9.3. Mapping properties to secondary tables

9.4. Summary

Part 3: Transactional data processing

10. Managing data

10.1. The persistence life cycle

10.1.1. Entity instance states

10.1.2. The persistence context

10.2. The EntityManager interface

10.2.1. The canonical unit of work

10.2.2. Making data persistent

10.2.3. Retrieving and modifying persistent data

10.2.4. Getting a reference

10.2.5. Making data transient

10.2.6. Refreshing data

10.2.7. Replicating data

10.2.8. Caching in the persistence context

10.2.9. Flushing the persistence context

10.3. Working with detached state

10.3.1. The identity of detached instances

10.3.2. Implementing equality methods

10.3.3. Detaching entity instances

10.3.4. Merging entity instances

10.4. Summary

11. Transactions and concurrency

11.1. Transaction essentials

11.1.1. ACID attributes

11.1.2. Database and system transactions

11.1.3. Programmatic transactions with JTA

11.1.4. Handling exceptions

11.1.5. Declarative transaction demarcation

11.2. Controlling concurrent access

11.2.1. Understanding database-level concurrency

11.2.2. Optimistic concurrency control

11.2.3. Explicit pessimistic locking

11.2.4. Avoiding deadlocks

11.3. Non-transactional data access

11.3.1. Reading data in auto-commit mode

11.3.2. Queueing modifications

11.4. Summary

12. Fetch plans, strategies, and profiles

12.1. Lazy and eager loading

12.1.1. Understanding entity proxies

12.1.2. Lazy persistent collections

12.1.3. Lazy loading with interception

12.1.4. Eager loading of associations and collections

12.2. Selecting a fetch strategy

12.2.1. The n+1 selects problem

12.2.2. The Cartesian product problem

12.2.3. Prefetching data in batches

12.2.4. Prefetching collections with subselects

12.2.5. Eager fetching with multiple SELECTs

12.2.6. Dynamic eager fetching

12.3. Using fetch profiles

12.3.1. Declaring Hibernate fetch profiles

12.3.2. Working with entity graphs

12.4. Summary

13. Filtering data

13.1. Cascading state transitions

13.1.1. Available cascading options

13.1.2. Transitive detachment and merging

13.1.3. Cascading refresh

13.1.4. Cascading replication

13.1.5. Enabling global transitive persistence

13.2. Listening to and intercepting events

13.2.1. JPA event listeners and callbacks

13.2.2. Implementing Hibernate interceptors

13.2.3. The core event system

13.3. Auditing and versioning with Hibernate Envers

13.3.1. Enabling audit logging

13.3.2. Creating an audit trail

13.3.3. Finding revisions

13.3.4. Accessing historical data

13.4. Dynamic data filters

13.4.1. Defining dynamic filters

13.4.2. Applying the filter

13.4.3. Enabling the filter

13.4.4. Filtering collection access

13.5. Summary

Part 4: Writing queries

14. Creating and executing queries

14.1. Creating queries

14.1.1. The JPA query interfaces

14.1.2. Typed query results

14.1.3. Hibernate’s query interfaces

14.2. Preparing queries

14.2.1. Protecting against SQL injection attacks

14.2.2. Binding named parameters

14.2.3. Using positional parameters

14.2.4. Paging through large result sets

14.3. Executing queries

14.3.1. Listing all results

14.3.2. Getting a single result

14.3.3. Scrolling with database cursors

14.3.4. Iterating through a result

14.4. Naming and externalizing queries

14.4.1. Calling a named query

14.4.2. Defining queries in XML metadata

14.4.3. Defining queries with annotations

14.4.4. Defining named queries programmatically

14.5. Query hints

14.5.1. Setting a timeout

14.5.2. Setting the flush mode

14.5.3. Setting read-only mode

14.5.4. Setting a fetch size

14.5.5. Setting an SQL comment

14.5.6. Named query hints

14.6. Summary

15. The query languages

15.1. Selection

15.1.1. Assigning aliases and query roots

15.1.2. Polymorphic queries

15.2. Restriction

15.2.1. Comparison expressions

15.2.2. Expressions with collections

15.2.3. Calling functions

15.2.4. Ordering query results

15.3. Projection

15.3.1. Projection of entities and scalar values

15.3.2. Utilizing dynamic instantiation

15.3.3. Getting distinct results

15.3.4. Calling functions in projections

15.3.5. Aggregation functions

15.3.6. Grouping

15.4. Joins

15.4.1. Joins with SQL

15.4.2. Join options in JPA

15.4.3. Implicit association joins

15.4.4. Explicit joins

15.4.5. Dynamic fetching with joins

15.4.6. Theta-style joins

15.4.7. Comparing identifiers

15.5. Subselects

15.5.1. Correlated and uncorrelated nesting

15.5.2. Quantification

15.6. Summary

16. Advanced query options

16.1. Transforming query results

16.1.1. Returning list of lists

16.1.2. Returning a list of maps

16.1.3. Mapping aliases to bean properties

16.1.4. Writing a ResultTransformer

16.2. Filtering collections

16.3. The Hibernate criteria query API

16.3.1. Selection and ordering

16.3.2. Restriction

16.3.3. Projection and aggregation

16.3.4. Joins

16.3.5. Subselects

16.3.6. Example queries

16.4. Summary

17. Customizing SQL

17.1. Falling back to JDBC

17.2. Mapping SQL query results

17.2.1. Projection with SQL queries

17.2.2. Mapping to an entity class

17.2.3. Customizing result mappings

17.2.4. Externalizing native queries

17.3. Customizing CRUD operations

17.3.1. Enabling custom loaders

17.3.2. Customizing creation, updates, and deletion

17.3.3. Customizing collection operations

17.3.4. Eager fetching in custom loaders

17.4. Calling stored procedures

17.4.1. Returning a result set

17.4.2. Returning multiple results and update counts

17.4.3. Setting input and output parameters

17.4.4. Returning a cursor

17.5. Using stored procedures for CRUD

17.5.1. Custom loader with a procedure

17.5.2. Procedures for CUD

17.6. Summary

Part 5: Building Applications

18. Designing client/server applications

18.1. Creating a persistence layer

18.1.1. A generic Data Access Object pattern

18.1.2. Implementing the generic interface

18.1.3. Implementing entity DAOs

18.1.4. Testing the persistence layer

18.2. Building a stateless server

18.2.1. Editing an auction item

18.2.2. Placing a bid

18.2.3. Analyzing the stateless application

18.3. Building a stateful server

18.3.1. Editing an auction item

18.3.2. Analyzing the stateful application

18.4. Summary

19. Building web applications

19.1. Integrating JPA with CDI

19.1.1. Producing an EntityManager

19.1.2. Joining the EntityManager with transactions

19.1.3. Injecting an EntityManager

19.2. Paging and sorting data

19.2.1. Offset Paging vs. Seeking

19.2.2. Paging in the persistence layer

19.2.3. Querying page-by-page

19.3. Building JSF applications

19.3.1. Request-scoped services

19.3.2. Conversation-scoped services

19.4. Serializing domain model data

19.4.1. Writing a JAX-RS service

19.4.2. Applying JAXB mappings

19.4.3. Serializing Hibernate proxies

19.5. Summary

20. Scaling Hibernate

20.1. Bulk and batch processing

20.1.1. Bulk statements in JPQL and criteria

20.1.2. Bulk statements in SQL

20.1.3. Processing in batches

20.1.4. The Hibernate StatelessSession interface

20.2. Caching data

20.2.1. The Hibernate shared cache architecture

20.2.2. Configuring the shared cache

20.2.3. Enabling entity and collection caching

20.2.4. Testing the shared cache

20.2.5. Setting cache modes

20.2.6. Controlling the shared cache

20.2.7. The query result cache

20.3. Summary

What's inside

  • Object/relational mapping concepts
  • Efficient database application design
  • Comprehensive Hibernate and Java Persistence reference
  • Integration of Java Persistence with EJB, CDI, JSF, and JAX-RS
  • Unmatched breadth and depth

About the reader

The book assumes a working knowledge of Java.

About the authors

Christian Bauer is a member of the Hibernate developer team and a trainer and consultant. Gavin King is the founder of the Hibernate project and a member of the Java Persistence expert group (JSR 220). Gary Gregory is a principal software engineer working on application servers and legacy integration.

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