com.db4o.internal.query

Class ObjectSetFacade

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList

com.db4o.internal.query.ObjectSetFacade

All Implemented Interfaces:

ExtObjectSet, ObjectSet, java.lang.Iterable, java.util.Collection, java.util.List

public class ObjectSetFacade
extends java.util.AbstractList
implements ExtObjectSet

Field Summary

Fields

Modifier and Type	Field and Description
StatefulQueryResult	_delegate

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor and Description
ObjectSetFacade(QueryResult queryResult)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	contains(java.lang.Object obj)
ExtObjectSet	ext() returns an ObjectSet with extended functionality.
java.lang.Object	get(int index) returns the item at position [index] in this ObjectSet.
long[]	getIDs() returns an array of internal IDs that correspond to the contained objects.
boolean	hasNext() returns true if the ObjectSet has more elements.
int	indexOf(java.lang.Object obj)
java.util.Iterator	iterator()
int	lastIndexOf(java.lang.Object obj)
java.lang.Object	next() returns the next object in the ObjectSet.
void	remove()
void	reset() resets the ObjectSet cursor before the first element.
int	size() returns the number of elements in the ObjectSet.
void	sort(QueryComparator cmp)

Methods inherited from class java.util.AbstractList

add, add, addAll, clear, equals, hashCode, listIterator, listIterator, remove, removeRange, set, subList

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

add, add, addAll, addAll, clear, containsAll, equals, hashCode, isEmpty, listIterator, listIterator, remove, remove, removeAll, retainAll, set, subList, toArray, toArray

Field Detail

_delegate

public final StatefulQueryResult _delegate

Constructor Detail

ObjectSetFacade

public ObjectSetFacade(QueryResult queryResult)

Method Detail

sort

public void sort(QueryComparator cmp)

iterator

public java.util.Iterator iterator()

Specified by:

iterator in interface java.lang.Iterable

Specified by:

iterator in interface java.util.Collection

Specified by:

iterator in interface java.util.List

Overrides:

iterator in class java.util.AbstractList

getIDs

public long[] getIDs()

Description copied from interface: ExtObjectSet

returns an array of internal IDs that correspond to the contained objects.

Specified by:

getIDs in interface ExtObjectSet

See Also:

ExtObjectContainer.getID(java.lang.Object), ExtObjectContainer.getByID(long)

ext

public ExtObjectSet ext()

Description copied from interface: ObjectSet

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.

Specified by:

ext in interface ObjectSet

hasNext

public boolean hasNext()

Description copied from interface: ObjectSet

returns true if the ObjectSet has more elements.

Specified by:

hasNext in interface ObjectSet

Returns:

boolean - true if the ObjectSet has more elements.

next

public java.lang.Object next()

Description copied from interface: ObjectSet

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.

Specified by:

next in interface ObjectSet

Returns:

the next object in the ObjectSet.

reset

public void reset()

Description copied from interface: ObjectSet

resets the ObjectSet cursor before the first element.

A subsequent call to next() will return the first element.

Specified by:

reset in interface ObjectSet

size

public int size()

Description copied from interface: ObjectSet

returns the number of elements in the ObjectSet.

Specified by:

size in interface ObjectSet

Specified by:

size in interface java.util.Collection

Specified by:

size in interface java.util.List

Specified by:

size in class java.util.AbstractCollection

Returns:

the number of elements in the ObjectSet.

contains

public boolean contains(java.lang.Object obj)

Specified by:

contains in interface java.util.Collection

Specified by:

contains in interface java.util.List

Overrides:

contains in class java.util.AbstractCollection

get

public java.lang.Object get(int index)

Description copied from interface: ExtObjectSet

returns the item at position [index] in this ObjectSet.

The object will be activated.

Specified by:

get in interface ExtObjectSet

Specified by:

get in interface java.util.List

Specified by:

get in class java.util.AbstractList

Parameters:

index - the index position in this ObjectSet.

Returns:

the activated object.

indexOf

public int indexOf(java.lang.Object obj)

Specified by:

indexOf in interface java.util.List

Overrides:

indexOf in class java.util.AbstractList

lastIndexOf

public int lastIndexOf(java.lang.Object obj)

Specified by:

lastIndexOf in interface java.util.List

Overrides:

lastIndexOf in class java.util.AbstractList

remove

public void remove()