ObjectSet SourceCode GPL - https://github.com/iboxdb/db4o-gpl

All Superinterfaces:

java.util.Collection<T>, java.lang.Iterable<T>, java.util.List<T>

All Known Subinterfaces:

ExtObjectSet

All Known Implementing Classes:

ObjectSetFacade
```
public interface ObjectSet<T>
extends java.util.List<T>, java.lang.Iterable<T>
```
An ObjectSet is a representation for a set of objects returned by a query.

ObjectSet extends the list interface. It is recommended to never reference ObjectSet directly in code but to use the list interface instead.

Note that the underlying ObjectContainer of an ObjectSet needs to remain open as long as an ObjectSet is used. This is necessary for lazy instantiation. The objects in an ObjectSet are only instantiated when they are actually being used by the application. In case you want to use a query result after the object container has been closed, you need to copy the result set.

See Also:

for extended functionality.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ExtObjectSet`	`ext()`	Returns an ObjectSet with extended functionality.
`boolean`	`hasNext()`	Returns true if the ObjectSet has more elements.
`T`	`next()`	Returns the next object in the ObjectSet.
`void`	`reset()`	Resets the ObjectSet cursor before the first element.
`int`	`size()`	Returns the number of elements in the ObjectSet.

Methods inherited from interface java.util.Collection
parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable
forEach

Methods inherited from interface java.util.List
add, add, addAll, addAll, clear, contains, containsAll, equals, get, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, replaceAll, retainAll, set, sort, spliterator, subList, toArray, toArray

- Method Detail
  - ext
```
ExtObjectSet ext()
```
    Returns an ObjectSet with extended functionality.
    
    Every ObjectSet that db4o provides can be casted to an ExtObjectSet. This method is supplied for your convenience to work without a cast.
    
    The ObjectSet functionality is split to two interfaces to allow newcomers to focus on the essential methods.
  - hasNext
```
boolean hasNext()
```
    Returns true if the ObjectSet has more elements.
    
    Returns:
    
    boolean - true if the ObjectSet has more elements.
  - next
```
T next()
```
    Returns the next object in the ObjectSet.
    
    Before returning the object, next() triggers automatic activation of the object with the respective global or class specific setting.
    
    Returns:
    
    the next object in the ObjectSet.
  - reset
```
void reset()
```
    Resets the ObjectSet cursor before the first element. A subsequent call to next() will return the first element.
  - size
```
int size()
```
    Returns the number of elements in the ObjectSet.
    
    Specified by:
    
    size in interface java.util.Collection<T>
    
    Specified by:
    
    size in interface java.util.List<T>
    
    Returns:
    
    the number of elements in the ObjectSet.