fri.util.database.jpa.commons
Class AbstractEntity
java.lang.Object
fri.util.database.jpa.commons.AbstractEntity
- Direct Known Subclasses:
- AbstractNestedSetsTreePojo, ClosureTableTreePojo
public abstract class AbstractEntity
- extends java.lang.Object
This is an example base class for domain objects, used by unit tests.
It uses the "Id" property for equals() and hashCode() implementations.
This is not the best way to implement such a POJO, but sufficient for unit tests.
Mind that a POJO could get lost when being inserted into a Map without having an ID
(transient state), and being retrieved after it got its ID by some JPA primary key factory.
- Author:
- Fritz Ritzberger, 08.10.2011
Method Summary |
boolean |
equals(java.lang.Object other)
|
abstract java.io.Serializable |
getId()
|
int |
hashCode()
|
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
AbstractEntity
public AbstractEntity()
getId
public abstract java.io.Serializable getId()
equals
public boolean equals(java.lang.Object other)
- Overrides:
equals
in class java.lang.Object
- Returns:
- true if the UID's (database primary keys) of this and
the other object are defined (persistent state) and equal, else
delegates to
super.equals()
which normally uses
the object's memory address.
hashCode
public int hashCode()
- Overrides:
hashCode
in class java.lang.Object
- Returns:
- the ID's hash-code (database primary key), when ID
is not null (persistent state), else delegates to
super.hashCode()
which normally returns the object's memory address.