OneToManyTest (JPA::Relation::Examples 5.1.0-SNAPSHOT Test API)

java.lang.Object
- ejava.examples.orm.rel.DemoBase
- - ejava.examples.orm.rel.OneToManyTest

```
public class OneToManyTest
extends DemoBase
```
This test case provides a demo of OneToMany and ManyToOne relationships. In this type of relationship, the foreign key is either in the many side's table or a link table.

Field Summary

Fields
Modifier and Type Field Description

private long borrowerId
- Fields inherited from class ejava.examples.orm.rel.DemoBase
  em, emf, logBase, logger

Constructor Summary

Constructors
Constructor Description

OneToManyTest()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`setUp()`	This setUp method creates a Borrower to be used during the test methods.
`void`	`testManyOneBiDirectional()`	This provides a basic demonstration of setting up a One/Many relationship.
`void`	`testRemove()`	This provides a basic demonstration of removing entities from a One/Many relationship.

Methods inherited from class ejava.examples.orm.rel.DemoBase
postcleanup, precleanup, setUpBase, setUpDownShared, tearDownBase, tearDownBaseClass

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - borrowerId
```
private long borrowerId
```
- Constructor Detail
  - OneToManyTest
```
public OneToManyTest()
```
- Method Detail
  - setUp
```
public void setUp()
           throws Exception
```
    This setUp method creates a Borrower to be used during the test methods.
    
    Throws:
    
    Exception
  - testManyOneBiDirectional
```
public void testManyOneBiDirectional()
```
    This provides a basic demonstration of setting up a One/Many relationship. Take special note that because the entities of regular POJOs and we no longer have CMR from EJB2.1, we must manually update the in-memory references on both sides. However, it is only the setting() and persisting of the owning side of the relation that updates any foreign key relationships.
  - testRemove
```
public void testRemove()
```
    This provides a basic demonstration of removing entities from a One/Many relationship. Note that we have to update the java fields on both sides of the bi-directional relationship.