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## org.apache.cayenne
Class PersistentObject

    java.lang.Object
      org.apache.cayenne.PersistentObject

All Implemented Interfaces:
  Serializable, Persistent

    public abstract class PersistentObject

extends Object
implements Persistent

A convenience base superclass for concrete Persistent objects. Provides implementation of properties declared in Persistent interface.

#### POJO Note

If having PersistentObject as a superclass presents a problem in an application, source code of this class can be copied verbatim to a custom class generation template. Desired superclass can be set in CayenneModeler.

Since:
  1.2
Author:
  Andrus Adamchik
See Also:
  Serialized Form

Field Summary
`protected ObjectContext` | `objectContext`
`protected ObjectId` | `objectId`
`protected int` | `persistenceState`

Constructor Summary
`PersistentObject()` Creates a new transient object.

Method Summary
`protected Object` | `getMapKey(String relationshipName, Object value)` Returns a map key for a given to-many map relationship and a target object.
`ObjectContext` | `getObjectContext()`
`ObjectId` | `getObjectId()`
`int` | `getPersistenceState()`
`void` | `setObjectContext(ObjectContext objectContext)`
`void` | `setObjectId(ObjectId objectId)`
`void` | `setPersistenceState(int persistenceState)`
`String` | `toString()`

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

Field Detail

### objectId

    protected ObjectId objectId

### persistenceState

    protected int persistenceState

### objectContext

    protected transient ObjectContext objectContext

Constructor Detail

### PersistentObject

    public PersistentObject()

  Creates a new transient object.

Method Detail

### getPersistenceState

    public int getPersistenceState()

  Specified by:
    `getPersistenceState` in interface `Persistent`

### setPersistenceState

    public void setPersistenceState(int persistenceState)

  Specified by:
    `setPersistenceState` in interface `Persistent`

### getObjectContext

    public ObjectContext getObjectContext()

  Specified by:
    `getObjectContext` in interface `Persistent`

### setObjectContext

    public void setObjectContext(ObjectContext objectContext)

  Specified by:
    `setObjectContext` in interface `Persistent`

### getObjectId

    public ObjectId getObjectId()

  Specified by:
    `getObjectId` in interface `Persistent`

### setObjectId

    public void setObjectId(ObjectId objectId)

  Specified by:
    `setObjectId` in interface `Persistent`

### getMapKey

    protected Object getMapKey(String relationshipName,
                               Object value)

  Returns a map key for a given to-many map relationship and a target object.

  Since:
    3.0

### toString

    public String toString()

  Overrides:
    `toString` in class `Object`

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