Java Persistence with Hibernate, Second Edition

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Java Persistence with Hibernate
Praise for the First Edition
Copyright
Dedication
Brief Table of Contents
Table of Contents
front matter
Foreword to the First Edition
Preface
Acknowledgments
About this Book
Roadmap
Who should read this book?
Code conventions
Source code downloads
Author Online
About the authors
About the Cover Illustration
Part 1. Getting started with ORM
Chapter 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
Chapter 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
Chapter 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
Chapter 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
Chapter 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
The extension points
5.4. Summary
Chapter 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
Chapter 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
Chapter 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. Unidirectional 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. Unidirectional and bidirectional many-to-many associations
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 a property key
8.4.2. Key/Value ternary relationship
8.5. Summary
Chapter 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
Chapter 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
Chapter 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. Nontransactional data access
11.3.1. Reading data in auto-commit mode
11.3.2. Queueing modifications
11.4. Summary
Chapter 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
Chapter 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
Chapter 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
Chapter 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. Using 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
Chapter 16. Advanced query options
16.1. Transforming query results
16.1.1. Returning a 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
Chapter 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
Chapter 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
Chapter 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
Chapter 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
Appendix. References
Index
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List of Figures
List of Tables
List of Listings