CompoundDiff (cayenne-doc: Cayenne Documentation 4.2 API)

java.lang.Object
- org.apache.cayenne.graph.CompoundDiff

All Implemented Interfaces:

Serializable, GraphDiff
```
public class CompoundDiff
extends Object
implements GraphDiff
```
A GraphDiff that is a list of other GraphDiffs.

Since:

1.2

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

protected List<GraphDiff> diffs

Constructor Summary

Constructors
Constructor Description

CompoundDiff()
Creates an empty CompoundDiff instance.

CompoundDiff(List<GraphDiff> diffs)
Creates CompoundDiff instance.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`add(GraphDiff diff)`
`void`	`addAll(Collection<? extends GraphDiff> diffs)`
`void`	`apply(GraphChangeHandler tracker)`	Iterates over diffs list, calling "apply" on each individual diff.
`List<GraphDiff>`	`getDiffs()`
`boolean`	`isNoop()`	Returns true if this diff has no other diffs or if all of its diffs are noops.
`void`	`undo(GraphChangeHandler tracker)`	Iterates over diffs list in reverse order, calling "apply" on each individual diff.

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

- Field Detail
  - diffs
```
protected List<GraphDiff> diffs
```
- Constructor Detail
  - CompoundDiff
```
public CompoundDiff()
```
    Creates an empty CompoundDiff instance.
  - CompoundDiff
```
public CompoundDiff(List<GraphDiff> diffs)
```
    Creates CompoundDiff instance. Note that a List is not cloned in this constructor, so subsequent calls to add and addAll would modify the original list.
- Method Detail
  - isNoop
```
public boolean isNoop()
```
    Returns true if this diff has no other diffs or if all of its diffs are noops.
    
    Specified by:
    
    isNoop in interface GraphDiff
  - getDiffs
```
public List<GraphDiff> getDiffs()
```
  - add
```
public void add(GraphDiff diff)
```
  - addAll
```
public void addAll(Collection<? extends GraphDiff> diffs)
```
  - apply
```
public void apply(GraphChangeHandler tracker)
```
    Iterates over diffs list, calling "apply" on each individual diff.
    
    Specified by:
    
    apply in interface GraphDiff
  - undo
```
public void undo(GraphChangeHandler tracker)
```
    Iterates over diffs list in reverse order, calling "apply" on each individual diff.
    
    Specified by:
    
    undo in interface GraphDiff