java.lang.Object
- org.eclipse.persistence.mappings.structures.ArrayCollectionMappingHelper

```
public class ArrayCollectionMappingHelper
extends java.lang.Object
```
Helper class to consolidate all the heinous comparing and merging code for the Array collection mappings.

See Also:

ArrayCollectionMapping

Constructor Summary

Constructors
Constructor Description

ArrayCollectionMappingHelper(ArrayCollectionMapping mapping)
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected boolean`	`compareElements(java.lang.Object element1, java.lang.Object element2, org.eclipse.persistence.internal.sessions.AbstractSession session)`	Convenience method.
`protected boolean`	`compareElementsForChange(java.lang.Object element1, java.lang.Object element2, org.eclipse.persistence.internal.sessions.AbstractSession session)`	Convenience method.
`org.eclipse.persistence.internal.sessions.ChangeRecord`	`compareForChange(java.lang.Object clone, java.lang.Object backup, org.eclipse.persistence.internal.sessions.ObjectChangeSet owner, org.eclipse.persistence.internal.sessions.AbstractSession session)`	INTERNAL: Build and return the change record that results from comparing the two collection attributes.
`boolean`	`compareObjects(java.lang.Object object1, java.lang.Object object2, org.eclipse.persistence.internal.sessions.AbstractSession session)`	INTERNAL: Compare the attributes belonging to this mapping for the objects.
`DatabaseMapping`	`getDatabaseMapping()`	INTERNAL: Return the mapping, casted a bit more generally.
`ArrayCollectionMapping`	`getMapping()`	INTERNAL: Return the mapping.
`void`	`mergeChangesIntoObject(java.lang.Object target, org.eclipse.persistence.internal.sessions.ChangeRecord changeRecord, java.lang.Object source, org.eclipse.persistence.internal.sessions.MergeManager mergeManager, org.eclipse.persistence.internal.sessions.AbstractSession targetSession)`	INTERNAL: Merge changes from the source to the target object.
`void`	`mergeIntoObject(java.lang.Object target, boolean isTargetUnInitialized, java.lang.Object source, org.eclipse.persistence.internal.sessions.MergeManager mergeManager, org.eclipse.persistence.internal.sessions.AbstractSession targetSession)`	INTERNAL: Merge changes from the source to the target object.
`void`	`simpleAddToCollectionChangeRecord(java.lang.Object referenceKey, java.lang.Object changeSetToAdd, org.eclipse.persistence.internal.sessions.ObjectChangeSet changeSet, org.eclipse.persistence.internal.sessions.AbstractSession session)`	ADVANCED: This method is used to add an object to a collection once the changeSet is applied.
`void`	`simpleRemoveFromCollectionChangeRecord(java.lang.Object referenceKey, java.lang.Object changeSetToRemove, org.eclipse.persistence.internal.sessions.ObjectChangeSet changeSet, org.eclipse.persistence.internal.sessions.AbstractSession session)`	ADVANCED: This method is used to remove an object from a collection once the changeSet is applied.

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

Constructor Detail

ArrayCollectionMappingHelper

public ArrayCollectionMappingHelper(ArrayCollectionMapping mapping)

Constructor.

Method Detail

compareElements

protected boolean compareElements(java.lang.Object element1,
                                  java.lang.Object element2,
                                  org.eclipse.persistence.internal.sessions.AbstractSession session)

Convenience method. Check for null values before delegating to the mapping.

compareElementsForChange

protected boolean compareElementsForChange(java.lang.Object element1,
                                           java.lang.Object element2,
                                           org.eclipse.persistence.internal.sessions.AbstractSession session)

Convenience method. Check for null values before delegating to the mapping.

getMapping

public ArrayCollectionMapping getMapping()

INTERNAL: Return the mapping.

compareForChange

public org.eclipse.persistence.internal.sessions.ChangeRecord compareForChange(java.lang.Object clone,
                                                                               java.lang.Object backup,
                                                                               org.eclipse.persistence.internal.sessions.ObjectChangeSet owner,
                                                                               org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: Build and return the change record that results from comparing the two collection attributes.

compareObjects

public boolean compareObjects(java.lang.Object object1,
                              java.lang.Object object2,
                              org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: Compare the attributes belonging to this mapping for the objects.

mergeChangesIntoObject

public void mergeChangesIntoObject(java.lang.Object target,
                                   org.eclipse.persistence.internal.sessions.ChangeRecord changeRecord,
                                   java.lang.Object source,
                                   org.eclipse.persistence.internal.sessions.MergeManager mergeManager,
                                   org.eclipse.persistence.internal.sessions.AbstractSession targetSession)

INTERNAL: Merge changes from the source to the target object.

mergeIntoObject

public void mergeIntoObject(java.lang.Object target,
                            boolean isTargetUnInitialized,
                            java.lang.Object source,
                            org.eclipse.persistence.internal.sessions.MergeManager mergeManager,
                            org.eclipse.persistence.internal.sessions.AbstractSession targetSession)

INTERNAL: Merge changes from the source to the target object. Simply replace the entire target collection.

simpleAddToCollectionChangeRecord

public void simpleAddToCollectionChangeRecord(java.lang.Object referenceKey,
                                              java.lang.Object changeSetToAdd,
                                              org.eclipse.persistence.internal.sessions.ObjectChangeSet changeSet,
                                              org.eclipse.persistence.internal.sessions.AbstractSession session)

ADVANCED: This method is used to add an object to a collection once the changeSet is applied. The referenceKey parameter should only be used for direct Maps.

simpleRemoveFromCollectionChangeRecord

public void simpleRemoveFromCollectionChangeRecord(java.lang.Object referenceKey,
                                                   java.lang.Object changeSetToRemove,
                                                   org.eclipse.persistence.internal.sessions.ObjectChangeSet changeSet,
                                                   org.eclipse.persistence.internal.sessions.AbstractSession session)

ADVANCED: This method is used to remove an object from a collection once the changeSet is applied. The referenceKey parameter should only be used for direct Maps.

getDatabaseMapping
```
public DatabaseMapping getDatabaseMapping()
```
INTERNAL: Return the mapping, casted a bit more generally.

Class ArrayCollectionMappingHelper

Constructor Summary