Extent (OpenJPA Parent POM 4.1.1 API)

All Known Implementing Classes:

DelegatingExtent, ExtentImpl
```
public interface Extent<T>
```
Representation of all members of a persistent class.

Author:

Abe White, Patrick Linskey

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`closeAll()`	Close all open iterators.
`Broker`	`getBroker()`	The broker that generated the extent.
`Class<T>`	`getElementType()`	The class of extent elements.
`FetchConfiguration`	`getFetchConfiguration()`	Return the (mutable) fetch configuration for this extent.
`boolean`	`getIgnoreChanges()`	Whether this extent will ignore changes made in the current transaction.
`boolean`	`hasSubclasses()`	Whether the extent includes subclasses.
`Iterator<T>`	`iterator()`	Return an iterator over the extent members.
`List<T>`	`list()`	Returns a list of all objects represented by this extent.
`void`	`lock()`	Synchronizes on an internal lock.
`void`	`setIgnoreChanges(boolean ignoreChanges)`	Whether this extent will ignore changes made in the current transaction.
`void`	`unlock()`	Release the internal lock.

- Method Detail
  - getFetchConfiguration
```
FetchConfiguration getFetchConfiguration()
```
    Return the (mutable) fetch configuration for this extent.
  - getIgnoreChanges
```
boolean getIgnoreChanges()
```
    Whether this extent will ignore changes made in the current transaction.
  - setIgnoreChanges
```
void setIgnoreChanges(boolean ignoreChanges)
```
    Whether this extent will ignore changes made in the current transaction.
  - list
```
List<T> list()
```
    Returns a list of all objects represented by this extent. This method creates a List by traversing the entire iterator returned by a call to iterator(). This means that Collection.size() will work correctly, but if the extent represents a large data set, this method may be quite slow and may consume quite a bit of memory.
  - iterator
```
Iterator<T> iterator()
```
    Return an iterator over the extent members.
  - getBroker
```
Broker getBroker()
```
    The broker that generated the extent.
  - getElementType
```
Class<T> getElementType()
```
    The class of extent elements.
  - hasSubclasses
```
boolean hasSubclasses()
```
    Whether the extent includes subclasses.
  - closeAll
```
void closeAll()
```
    Close all open iterators.
  - lock
```
void lock()
```
    Synchronizes on an internal lock.
  - unlock
```
void unlock()
```
    Release the internal lock.