FetchGroupTracker (EclipseLink 2.7.15, API Reference)

```
public interface FetchGroupTracker
```
Purpose: The fetch group tracker interface provides a set of APIs which the domain object must implement, in order to take advantage of the EclipseLink fetch group performance enhancement feature.

See Also:

FetchGroup

Author:

King Wang

Since:

TopLink 10.1.3

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`FetchGroup`	`_persistence_getFetchGroup()`	Return the fetch group being tracked
`Session`	`_persistence_getSession()`	Return the session for the object.
`boolean`	`_persistence_isAttributeFetched(java.lang.String attribute)`	Return true if the attribute is in the fetch group being tracked.
`void`	`_persistence_resetFetchGroup()`	Reset all attributes of the tracked object to the unfetched state with initial default values.
`void`	`_persistence_setFetchGroup(FetchGroup group)`	Set a fetch group to be tracked.
`void`	`_persistence_setSession(Session session)`	Set true if the fetch group attributes should be refreshed
`void`	`_persistence_setShouldRefreshFetchGroup(boolean shouldRefreshFetchGroup)`	Set true if the fetch group attributes should be refreshed.
`boolean`	`_persistence_shouldRefreshFetchGroup()`	Return true if the fetch group attributes should be refreshed.

- Method Detail
  - _persistence_getFetchGroup
```
FetchGroup _persistence_getFetchGroup()
```
    Return the fetch group being tracked
  - _persistence_setFetchGroup
```
void _persistence_setFetchGroup(FetchGroup group)
```
    Set a fetch group to be tracked.
  - _persistence_isAttributeFetched
```
boolean _persistence_isAttributeFetched(java.lang.String attribute)
```
    Return true if the attribute is in the fetch group being tracked.
  - _persistence_resetFetchGroup
```
void _persistence_resetFetchGroup()
```
    Reset all attributes of the tracked object to the unfetched state with initial default values.
  - _persistence_shouldRefreshFetchGroup
```
boolean _persistence_shouldRefreshFetchGroup()
```
    Return true if the fetch group attributes should be refreshed.
  - _persistence_setShouldRefreshFetchGroup
```
void _persistence_setShouldRefreshFetchGroup(boolean shouldRefreshFetchGroup)
```
    Set true if the fetch group attributes should be refreshed.
  - _persistence_getSession
```
Session _persistence_getSession()
```
    Return the session for the object.
  - _persistence_setSession
```
void _persistence_setSession(Session session)
```
    Set true if the fetch group attributes should be refreshed