Hibernate is the Object Relational Mapping (ORM) solution for Java. It is an open source framework, and a powerful and high performance Object-Relational Persistence and Query service for any Java Application.

Hibernate is an ORM framework in which like all the frameworks we have some layers which ccan coordinate with each other. Hibernate sits between the traditional Java objects and the database server to handle all the works in persisting the objects based on the appropriate Object Relational mechanisms and patterns.

Hibernate Online Training Course Content

Object Persistence

• Object/Relational Paradigms
• O/R Mismatch
• Object Relational Mapping (ORM)
• Java ORM/Persistent Frameworks

Hibernate Architecture

• Hibernate Architecture and API
• Hibernate Installation/Setup
• Configuration
• Configuration Properties
• Mapping Files

Persistent Classes

• POJOs
• JavaBeans
• Basic Mapping
• Class to Table Mappings
• Property Mapping
• Identifiers
• Generators
• Natural Keys
• Identifier Exposure
• Quoting SQL Tables and Columns

Working with Persistent Objects

• Entity Lifecycle
• Transient State
• Persistent State
• Persistent Object Updates and Automatic Dirty Checking
• Deattached State
• Deleted
• Object Identifiers Revisited
• Merge

Components

• Domain Model
• Entities and Values
• Components

Associations

• Many-to-one
• Bidirectional Many-to-one
• Other Collections
• Other Associations
• One-to-one
• Bidirectional One-to-one
• Many-to-many
• Bidirectional Many-to-many

Value Type Collections

• Collections of Value Types
• Collections of Components
• Sorting Collections

Inheritance

• Inheritance Mapping Strategies
• Table per concrete class
• Table per subclass
• Table per hierarchy
• Inheritance Mapping Pros/Cons
• Polymorphism
• Table per concrete class with unions
• Choosing an Inheritance Strategy

Transitive Persistence

• Lazy Loading
• Proxies
• Eager Loading
• What’s a Proxy?
• Detached Objects and Proxies
• Polymorphic Associations Revisited

HQL

• Hibernate Object Fetching Options
• Hibernate Query
• HQL Parameters
• Named Queries
• Native SQL

Criteria

• Restrictions
• Query By Example
• Scrolling
• Query Hints
• Query Option Pros/Cons

Transactions and Concurrency

• The Java Transaction
• Hibernate Transaction Configuration
• Hibernate Transaction API
• Concurrency
• Isolation Levels
• Optimistic Locking
• Versioning
• Pessimistic Locking

Cache

• Hibernate Caching Architecture
• First Level Cache
• Second Level Cache
• Cache Concurrency
• Configuring Second Level Cache