Enterprise Java Development@TOPIC@

Part VIII. Java Persistence API: Entities

Mapping POJOs to RDBMS Tables

Copyright © 2019 jim stafford (jim.stafford@jhu.edu)

2019-08-22 07:09 EST

Abstract

This presentation provides information for mapping Java classes (without relationships) to the database using JPA.

Table of Contents

Purpose
1. Goals
2. Objectives
46. Identifying Entity Classes
46.1. Entities
46.2. Entity Name
46.3. Field/Property Access
46.3.1. Access Types
46.3.2. Defining Access using @Annotations
46.3.3. Defining Access using orm.xml
46.4. Approaches
46.4.1. Java First
46.4.2. Schema First
47. Mapping Entity Classes
47.1. Core Mappings
47.2. More Detailed Property Mappings
47.3. Entity Mapping Example
47.3.1. Example Schema
47.3.2. Mapping Entity Class with Annotations
47.3.3. Mapping Entity Class with orm.xml
47.4. More on Precision/Scale
47.5. Transient Properties
47.6. Lob Properties
47.7. Temporal and Enumerated Properties
47.7.1. Temporals
47.7.2. Enums
47.7.3. Temporal/Enum Example
48. Primary Keys
48.1. Generated Simple Primary Keys
48.1.1. GenerationType.AUTO
48.1.2. GenerationType.IDENTITY
48.1.3. GenerationType.SEQUENCE
48.1.4. GenerationType.TABLE
49. Composite Primary Keys
49.1. Example Composite Primary Key Class
49.2. Composite @IdClass
49.3. Composite @EmbeddedId
49.4. Composite Overrides
49.5. Composite Primary Key Summary
50. Multi-table Mapping
50.1. Multi-table Example
50.2. Summary
51. Embedded Object
51.1. Embedded Object Example
51.2. Summary