Enterprise Java Development@TOPIC@

Part VII. Java Persistence API

Entities and EntityManager

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

2019-08-22 07:09 EST

Abstract

This presentation provides an introduction to JPA and coverage of the methods of the EntityManager.

Table of Contents

Purpose
1. Goals
2. Objectives
38. JPA Overview
38.1. Background
38.2. EntityManager
38.3. Entity
38.4. JPA Example
38.5. Entity States
38.5.1. Managed
38.5.2. Detached
38.6. Persistence Context
38.7. Persistence Unit
38.8. Example Layout
38.9. Persistence.xml
38.9.1. Application Example
38.9.2. Server Example
38.9.3. Optional hibernate.properties
38.9.4. Sample orm.xml
38.9.5. persistence.xml Elements
38.9.6. Entity Discovery
38.10. Schema Generation
38.10.1. Hibernate DDL Generation Example
38.10.2. javax.persistence Schema Generation
38.11. Basic Testing Usage Steps
38.12. Entity Manager Methods
38.12.1. Basic CRUD Operations
38.12.2. Membership Operations
38.12.3. State Synchronization Operations
38.12.4. Locking Operations
38.12.5. Query Operations
38.12.6. Other Operations
39. Entity Manager CRUD Methods
39.1. persist()
39.2. find()
39.3. getReference()
39.4. merge()
39.5. remove()
40. Entity Manager Membership Methods
40.1. contains()
40.2. clear()
40.3. detach()
41. Entity Manager State Synchronization Methods
41.1. flush()
41.2. FlushMode
41.3. refresh()
42. Entity Manager Locking Methods
42.1. Primary Lock Types
42.2. LockModeType
42.3. lock()
42.4. find(lock)
42.5. refresh(lock)
42.6. getLockMode()
43. Entity Manager Query Methods
43.1. JPA Queries
43.2. Native Queries
43.3. Criteria Queries
44. Other Entity Manager Methods
44.1. isOpen()
44.2. close()
44.3. getTransaction()
44.4. joinTransaction()
44.5. unwrap()
44.6. getDelegate()
44.7. getMetaModel()
44.8. getEntityManagerFactory()
44.9. setProperties()/getProperties()
45. JPA Maven Environment
45.1. JPA Maven Dependencies
45.1.1. JPA API classes
45.1.2. JPA Provider classes
45.1.3. Database
45.2. Supplying Runtime Properties
45.2.1. Turn on Resource Filtering in pom.xml
45.2.2. Use ${variable} References in Resource Files
45.2.3. Define Property Values in Parent pom.xml
45.2.4. Run with Filtered Values