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## org.apache.cayenne.util
Class ObjectContextGraphAction

    java.lang.Object
      org.apache.cayenne.util.ObjectContextGraphAction

All Implemented Interfaces:
  Serializable

    public abstract class ObjectContextGraphAction

extends Object
implements Serializable

A base implementation of a helper class to handle `ObjectContext.propertyChanged(org.apache.cayenne.Persistent, String, Object, Object)` processing on behalf of an ObjectContext.

Since:
  3.0
Author:
  Andrus Adamchik
See Also:
  Serialized Form

Field Summary
`protected ObjectContext` | `context`

Constructor Summary
`ObjectContextGraphAction(ObjectContext context)`

Method Summary
`protected abstract void` | `handleArcPropertyChange(Persistent object, ArcProperty property, Object oldValue, Object newValue)`
`void` | `handlePropertyChange(Persistent object, String propertyName, Object oldValue, Object newValue)` Handles property change in a Peristent object, routing to either `handleArcPropertyChange(Persistent, ArcProperty, Object, Object)` or `handleSimplePropertyChange(Persistent, String, Object, Object)`.
`protected abstract void` | `handleSimplePropertyChange(Persistent object, String propertyName, Object oldValue, Object newValue)`
`protected boolean` | `markAsDirty(Persistent object)` Changes object state to MODIFIED if needed, returning true if the change has occured, false if not.

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

Field Detail

### context

    protected ObjectContext context

Constructor Detail

### ObjectContextGraphAction

    public ObjectContextGraphAction(ObjectContext context)

Method Detail

### handlePropertyChange

    public void handlePropertyChange(Persistent object,
                                     String propertyName,
                                     Object oldValue,
                                     Object newValue)

  Handles property change in a Peristent object, routing to either `handleArcPropertyChange(Persistent, ArcProperty, Object, Object)` or `handleSimplePropertyChange(Persistent, String, Object, Object)`.

### handleArcPropertyChange

    protected abstract void handleArcPropertyChange(Persistent object,
                                                    ArcProperty property,
                                                    Object oldValue,
                                                    Object newValue)

### handleSimplePropertyChange

    protected abstract void handleSimplePropertyChange(Persistent object,
                                                       String propertyName,
                                                       Object oldValue,
                                                       Object newValue)

### markAsDirty

    protected boolean markAsDirty(Persistent object)

  Changes object state to MODIFIED if needed, returning true if the change has occured, false if not.

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