org.fryske_akademy.jpa

Class AbstractEntity

java.lang.Object

org.fryske_akademy.jpa.AbstractEntity

All Implemented Interfaces:

Serializable, EntityInterface

@MappedSuperclass
public class AbstractEntity
extends Object
implements EntityInterface

superclass for entities, defines auto generated id (GenerationType.IDENTITY), a version column and a function to check if the entity is transient (not in db yet). Jpa annotations are on getters which allows you to override. If you want to annotate fields in your subclasses be sure to annotate with AccessType.FIELD.

Author:

eduard

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AbstractEntity()

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
Integer	getId() an entity should have an id
int	getVersion()
int	hashCode()
boolean	isTransient() is the entity in the db?
void	setId(Integer id)
void	setVersion(int version)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractEntity

public AbstractEntity()

Method Detail

getId

public Integer getId()

Description copied from interface: EntityInterface

an entity should have an id

Specified by:

getId in interface EntityInterface

Returns:

setId

public void setId(Integer id)

getVersion

public int getVersion()

setVersion

public void setVersion(int version)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

isTransient

public boolean isTransient()

is the entity in the db?

Returns:

true when version < 0 (version default value is -1)