HARTMANN software group

The Java Persistence API Training in Cambridge

Enroll in or hire us to teach our The Java Persistence API class in Cambridge, Massachusetts by calling us @303.377.6176. Like all HSG classes, The Java Persistence API may be offered either onsite or via instructor led virtual training. Consider looking at our public training schedule to see if it is scheduled: Public Training Classes
Provided there are enough attendees, The Java Persistence API may be taught at one of our local training facilities.
We offer private customized training for groups of 3 or more attendees.
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Course Description

  
This course offers a comprehensive and detail-oriented treatment of the Java Persistence API (JPA) for developers interested in implementing persistence tiers for enterprise applications. We cover JPA basics including simple object/relational concepts and annotations, persistence contexts and entity managers, and configuration via persistence.xml. We get a good grounding in the Java Persistence Query Language (JPQL) and take advantage of a prepared JPQL query console to explore the two schemas on which the course's case studies are based. The course then moves into advanced topics including JPA-2.0 mapping options, the Criteria API, lifecycle hooks, JSR-303 validation, locking, and caching. Students will complete the course with a firm understanding of JPA architecture and plenty of hands-on exercise in entity mapping, persistence operations, and JPQL. br/ Course software includes two schemas: a fairly simple human-resources model (6 tables, 253 rows) for early chapters and a more sophisticated pharmacy schema (14 tables, 4255 rows) for the latter half of the course. br/ This version of the course supports JPA 2.0 with a choice of two providers: EclipseLink 2.3, which is pre-configured for course exercises, and Hibernate 4.0. Switching providers is just a matter of moving a few lines in and out of XML comments in the relevant persistence.xml file, and we encourage instructors to demonstrate both providers at least here and there, to illustrate portability and for comparison's sake over some finer points. br/ The course also supports either the Derby or Oracle RDBMS. Derby is bundled with the course software and is pre-configured; a script is included to change over to Oracle configurations for all exercises and schema-creation scripts are available for both.
Course Length: 4 Days
Course Tuition: $1690 (US)

Prerequisites
A strong Java programming background is essential for this course. A strong Java programming background is essential for this course. Prior experience with JDBC will be a plus but is not required.

Course Outline

  

Chapter 1. Introduction to JPA

  • Object/Relational Mapping
  • Mismatches Between Relational and Object Models
  • The Java Persistence API
  • JPA History
  • JPA Architecture
  • Entity Metadata
  • The Entity Manager
  • JPA Providers

Chapter 2. Object/Relational Mapping

  • Annotations
  • JavaBean Standards
  • Property, Field, and Mixed Access
  • Table and Column Mapping
  • Primary Keys and Generation
  • Type Mappings
  • Temporal and Enumerated Types
  • Embedded Types
  • Entity Relationships
  • @ManyToOne Relationships
  • @OneToOne Relationships
  • @OneToMany Relationships
  • @ManyToMany Relationships
  • Eager and Lazy Loading

Chapter 3. Entity Managers

  • Putting Entities to Work
  • persistence.xml
  • Entity State and Transitions
  • Managing Transactions
  • Persistence Operations
  • Creating Queries
  • Named Queries
  • Query Parameters
  • Native Queries

Chapter 4. JPQL

  • The Java Persistence Query Language
  • Query Structure
  • Path Expressions
  • Filtering
  • Scalar Functions
  • Operators and Precedence
  • between, like, in
  • is null, is empty
  • Ordering
  • Aliases
  • Grouping
  • Aggregate Functions
  • Joins
  • Constructors

Chapter 5. Advanced Mappings

  • Inheritance Strategies
  • Single-Table Strategy
  • Joined-Table Strategy
  • Table-Per-Concrete-Class Strategy
  • Querying Over Inheritance Relationships
  • Secondary Tables
  • Composite Primary Keys
  • @IdClass and @EmbeddedId
  • Derived Identifiers
  • @ElementCollection
  • Default Values
  • @Version Fields
  • Cascading and Orphan Removal
  • Detachment and Merging

Chapter 6. The Criteria API

  • History of the Criteria API
  • Criteria Query Structure
  • The MetaModel API and Query Type Safety
  • Tuples
  • Joins
  • Predicates
  • Building Expressions
  • Ordering
  • Grouping
  • Encapsulating Persistence Logic
  • Façades
  • Range Queries

Chapter 7. Lifecycle and Validation

  • Lifecycle Events
  • Method Annotations
  • Entity Listeners
  • JSR-303 Validation
  • Constraint Annotations
  • Validation Modes
  • Validation Groups

Chapter 8. Locking and Caching

  • Concurrency
  • Optimistic Locking
  • Optimistic Read Locking
  • Optimistic Write Locking
  • Pessimistic Locking
  • Caching
  • Persistence Context as Transactional Cache
  • Shared (2nd-level) Cache
  • Locking and Caching "Do's and Don'ts"

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