JPA Training with Hibernate

Goals

• Understand the value of object/relational mapping and JPA’s role as a standard for ORM implementations.
• Develop JPA entities using JPA annotations to align the Java classes, properties, and types to relational tables, columns, and types.
• Create entity managers and instantiate persistence contexts to perform persistence operations.
• Carry out create/retrieve/update/delete (CRUD) operations on JPA entities using entity managers.
• Implement entity relationships of all cardinalities, including unidirectional and bidirectional relationships.
• Implement special ORM cases such as composite primary keys, inheritance relationships, and cascading operations.
• Use JPQL to write object-oriented queries, and process query results.
• Use the Criteria API to define queries programmatically, and take advantage of type safety using the Metamodel API.
• Build reusable façades that encapsulate simpler and more complex persistence operations.
• Implement persistence lifecycle event handlers.
• Define JSR-303 validation constraints on JPA entities and see them enforced by the JPA provider.
• Make well-informed decisions about locking strategies, and understand the role of the JPA cache in enterprise applications.

Outline

1. Introduction to JPA
   1. Object/Relational Mapping
   2. Mismatches Between Relational and Object Models
   3. The Java Persistence API
   4. Hibernate
   5. History
   6. Architecture
   7. Entity Metadata
   8. The Entity Manager
2. Object/Relational Mapping
   1. Annotations
   2. JavaBean Standards
   3. Property, Field, and Mixed Access
   4. Table and Column Mapping
   5. Primary Keys and Generation
   6. Type Mappings
   7. Temporal and Enumerated Types
   8. Embedded Types
   9. Entity Relationships
   10. @ManyToOne Relationships
   11. @OneToOne Relationships
   12. @OneToMany Relationships
   13. @ManyToMany Relationships
   14. Eager and Lazy Loading
3. Entity Managers
   1. Putting Entities to Work
   2. persistence.xml
   3. Entity State and Transitions
   4. Managing Transactions
   5. Persistence Operations
   6. Creating Queries
   7. Named Queries
   8. Query Parameters
   9. Native Queries
4. JPQL
   1. The Java Persistence Query Language
   2. HQL and JPQL
   3. Query Structure
   4. Path Expressions
   5. Filtering
   6. Scalar Functions
   7. Operators and Precedence
   8. between, like, in
   9. is null, is empty
   10. Ordering
   11. Aliases
   12. Grouping
   13. Aggregate Functions
   14. Joins
   15. Constructors
5. Advanced Mappings
   1. Inheritance Strategies
   2. Single-Table Strategy
   3. Joined-Table Strategy
   4. Table-Per-Concrete-Class Strategy
   5. Querying Over Inheritance Relationships
   6. Type Identification with .class
   7. Secondary Tables
   8. Composite Primary Keys
   9. @IdClass and @EmbeddedId
   10. Derived Identifiers
   11. @ElementCollection
   12. Default Values
   13. @Version Fields
   14. Cascading and Orphan Removal
   15. Detachment and Merging
   16. Hibernate Extensions
   17. The @Type Annotation
6. The Criteria API
   1. History of the Criteria API
   2. Criteria Query Structure
   3. The MetaModel API and Query Type Safety
   4. The Hibernate Metamodel Generator
   5. Tuples
   6. Joins
   7. Predicates
   8. Building Expressions
   9. Ordering
   10. Grouping
   11. Encapsulating Persistence Logic
   12. Fa�ades
   13. Range Queries
7. Lifecycle and Validation
   1. Lifecycle Events
   2. Method Annotations
   3. Entity Listeners
   4. JSR-303 Validation
   5. The Hibernate Validator
   6. Constraint Annotations
   7. Validation Modes
   8. Validation Groups
8. Locking and Caching
   1. Concurrency
   2. Optimistic Locking
   3. Optimistic Read Locking
   4. Optimistic Write Locking
   5. Pessimistic Locking
   6. Caching
   7. Persistence Context as Transactional Cache
   8. Shared (2nd-level) Cache
   9. Locking and Caching “Do’s and Don’ts”

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