Class ArrayList<E>
java.lang.Object
java.util.AbstractCollection<E>
java.util.AbstractList<E>
java.util.ArrayList<E>
org.datanucleus.store.types.wrappers.ArrayList<E>
- All Implemented Interfaces:
Serializable
,Cloneable
,Iterable<E>
,Collection<E>
,List<E>
,RandomAccess
,SCO<ArrayList<E>>
,SCOCollection<ArrayList<E>,
,E> SCOContainer<ArrayList<E>>
,SCOList<ArrayList<E>,
E>
- Direct Known Subclasses:
ArrayList
A mutable second-class ArrayList object.
This is the simplified form that intercepts mutators and marks the field as dirty.
It also handles cascade-delete triggering for persistable elements.
- See Also:
-
Field Summary
FieldsModifier and TypeFieldDescriptionThe internal "delegate".protected AbstractMemberMetaData
protected DNStateManager
protected boolean
Fields inherited from class java.util.AbstractList
modCount
-
Constructor Summary
ConstructorsConstructorDescriptionConstructor, using StateManager of the "owner" and the member. -
Method Summary
Modifier and TypeMethodDescriptionvoid
Method to add an element to a position in the ArrayList.boolean
Method to add an element to the ArrayList.boolean
addAll
(int index, Collection<? extends E> elements) Method to add a Collection to a position in the ArrayList.boolean
addAll
(Collection<? extends E> elements) Method to add a Collection to the ArrayList.void
attachCopy
(ArrayList value) Method to return an attached copy of the passed (detached) value.void
clear()
Method to clear the ArrayList.clone()
Clone operator to return a copy of this object.boolean
Method to return if the list contains this element.boolean
Accessor for whether a collection of elements are contained here.detachCopy
(FetchPlanState state) Method to return a detached copy of the container.void
ensureCapacity
(int minCapacity) boolean
void
get
(int index) Method to retrieve an element no.Accessor for the field name.getOwner()
Accessor for the owner object.getValue()
Accessor for the unwrapped value that we are wrapping.int
hashCode()
int
Method to the position of an element.void
Method to initialise the SCO for use, and allowing the SCO to be loaded from the datastore (when we have a backing store).void
initialise
(ArrayList<E> c) Method to initialise the SCO for use with the provided initial value.void
initialise
(ArrayList<E> newValue, Object oldValue) Method to initialise the SCO for use, where replacing an old value with a new value such as when calling a setter field passing in a new value.boolean
isEmpty()
Accessor for whether the ArrayList is empty.boolean
isLoaded()
Method to return if the SCO has its contents loaded.iterator()
Method to retrieve an iterator for the list.int
lastIndexOf
(Object element) Method to retrieve the last position of the element.Method to retrieve a List iterator for the list.listIterator
(int index) Method to retrieve a List iterator for the list from the index.void
load()
Method to effect the load of the data in the SCO.void
Utility to mark the object as dirtyremove
(int index) Method to remove an element from the ArrayList.boolean
Method to remove (the first occurrence of) an element from the collectionboolean
Method to remove (the first occurrence of) an element from the collectionboolean
removeAll
(Collection<?> elements) Method to remove a collection of elements from the List.boolean
retainAll
(Collection<?> c) Method to retain a Collection of elements (and remove all others).Method to set the element at a position in the ArrayList.wrapper addition that allows turning off of the dependent-field checks when doing the position setting.void
Method to change the delegate value this wraps (to save recreating the wrapper).int
size()
Accessor for the size of the ArrayList.void
sort
(Comparator<? super E> comp) stream()
subList
(int from, int to) Accessor for the subList of elements between from and to of the ListObject[]
toArray()
<T> T[]
toArray
(T[] a) void
void
Method to unset the owner and field information.void
updateEmbeddedElement
(E element, int fieldNumber, Object value, boolean makeDirty) Method to update an embedded element in this list.protected Object
The writeReplace method is called when ObjectOutputStream is preparing to write the object to the stream.Methods inherited from class java.util.ArrayList
removeIf, removeRange, replaceAll
Methods inherited from class java.util.AbstractCollection
toString
-
Field Details
-
ownerSM
-
ownerMmd
-
delegate
The internal "delegate". -
sorting
protected boolean sorting
-
-
Constructor Details
-
ArrayList
Constructor, using StateManager of the "owner" and the member.- Parameters:
sm
- The owner StateManagermmd
- Metadata for the member
-
-
Method Details
-
initialise
Description copied from interface:SCO
Method to initialise the SCO for use, where replacing an old value with a new value such as when calling a setter field passing in a new value. Note that oldValue is marked as Object since for cases where the member type is Collection the newValue could be, for example, ArrayList, and the oldValue of type Collection (representing null).- Specified by:
initialise
in interfaceSCO<E>
- Parameters:
newValue
- New value (to wrap)oldValue
- Old value (to use in deciding what needs deleting etc)
-
initialise
Description copied from interface:SCO
Method to initialise the SCO for use with the provided initial value. This is used, for example, when retrieving the field from the datastore and setting it in the persistable object.- Specified by:
initialise
in interfaceSCO<E>
- Parameters:
c
- the object from which to copy the value.
-
initialise
public void initialise()Description copied from interface:SCO
Method to initialise the SCO for use, and allowing the SCO to be loaded from the datastore (when we have a backing store). This can be utilised to perform any eager loading of information from the datastore.- Specified by:
initialise
in interfaceSCO<E>
-
getValue
Accessor for the unwrapped value that we are wrapping. -
setValue
Description copied from interface:SCOContainer
Method to change the delegate value this wraps (to save recreating the wrapper).- Specified by:
setValue
in interfaceSCOContainer<E>
- Parameters:
value
- The new value
-
load
public void load()Method to effect the load of the data in the SCO. Used when the SCO supports lazy-loading to tell it to load all now.- Specified by:
load
in interfaceSCOContainer<E>
-
isLoaded
public boolean isLoaded()Method to return if the SCO has its contents loaded. Returns true.- Specified by:
isLoaded
in interfaceSCOContainer<E>
- Returns:
- Whether it is loaded
-
updateEmbeddedElement
Method to update an embedded element in this list.- Specified by:
updateEmbeddedElement
in interfaceSCOCollection<ArrayList<E>,
E> - Parameters:
element
- The elementfieldNumber
- Number of field in the elementvalue
- New value for this fieldmakeDirty
- Whether to make the SCO field dirty.
-
getFieldName
Accessor for the field name.- Specified by:
getFieldName
in interfaceSCO<E>
- Returns:
- The field name
-
getOwner
Accessor for the owner object. -
unsetOwner
public void unsetOwner()Method to unset the owner and field information.- Specified by:
unsetOwner
in interfaceSCO<E>
-
makeDirty
public void makeDirty()Utility to mark the object as dirty -
detachCopy
Method to return a detached copy of the container. Recurse sthrough the elements so that they are likewise detached.- Specified by:
detachCopy
in interfaceSCO<E>
- Parameters:
state
- State for detachment process- Returns:
- The detached container
-
attachCopy
Method to return an attached copy of the passed (detached) value. The returned attached copy is a SCO wrapper. Goes through the existing elements in the store for this owner field and removes ones no longer present, and adds new elements. All elements in the (detached) value are attached.- Specified by:
attachCopy
in interfaceSCO<E>
- Parameters:
value
- The new (collection) value
-
clone
Clone operator to return a copy of this object.Mutable second-class Objects are required to provide a public clone method in order to allow for copying persistable objects. In contrast to Object.clone(), this method must not throw a CloneNotSupportedException.
-
contains
Method to return if the list contains this element. -
containsAll
Accessor for whether a collection of elements are contained here.- Specified by:
containsAll
in interfaceCollection<E>
- Specified by:
containsAll
in interfaceList<E>
- Overrides:
containsAll
in classAbstractCollection<E>
- Parameters:
c
- The collection of elements.- Returns:
- Whether they are contained.
-
equals
- Specified by:
equals
in interfaceCollection<E>
- Specified by:
equals
in interfaceList<E>
- Overrides:
equals
in classAbstractList<E>
-
get
Method to retrieve an element no. -
hashCode
public int hashCode()- Specified by:
hashCode
in interfaceCollection<E>
- Specified by:
hashCode
in interfaceList<E>
- Overrides:
hashCode
in classAbstractList<E>
-
indexOf
Method to the position of an element. -
isEmpty
public boolean isEmpty()Accessor for whether the ArrayList is empty. -
iterator
Method to retrieve an iterator for the list. -
listIterator
Method to retrieve a List iterator for the list.- Specified by:
listIterator
in interfaceList<E>
- Overrides:
listIterator
in classArrayList<E>
- Returns:
- The iterator
-
listIterator
Method to retrieve a List iterator for the list from the index.- Specified by:
listIterator
in interfaceList<E>
- Overrides:
listIterator
in classArrayList<E>
- Parameters:
index
- The start point- Returns:
- The iterator
-
lastIndexOf
Method to retrieve the last position of the element.- Specified by:
lastIndexOf
in interfaceList<E>
- Overrides:
lastIndexOf
in classArrayList<E>
- Parameters:
element
- The element- Returns:
- The last position of this element in the List.
-
size
public int size()Accessor for the size of the ArrayList. -
subList
Accessor for the subList of elements between from and to of the List -
toArray
-
toArray
public <T> T[] toArray(T[] a) -
add
Method to add an element to a position in the ArrayList. -
add
Method to add an element to the ArrayList. -
addAll
Method to add a Collection to the ArrayList. -
addAll
Method to add a Collection to a position in the ArrayList. -
clear
public void clear()Method to clear the ArrayList. -
remove
Method to remove (the first occurrence of) an element from the collection -
remove
Method to remove (the first occurrence of) an element from the collection- Specified by:
remove
in interfaceSCOCollection<ArrayList<E>,
E> - Parameters:
element
- The Element to removeallowCascadeDelete
- Whether to cascade delete- Returns:
- Whether it was removed successfully.
-
remove
Method to remove an element from the ArrayList. -
removeAll
Method to remove a collection of elements from the List. -
retainAll
Method to retain a Collection of elements (and remove all others). -
set
wrapper addition that allows turning off of the dependent-field checks when doing the position setting. This means that we can prevent the deletion of the object that was previously in that position. This particular feature is used when attaching a list field and where some elements have changed positions. -
set
Method to set the element at a position in the ArrayList. -
writeReplace
The writeReplace method is called when ObjectOutputStream is preparing to write the object to the stream. The ObjectOutputStream checks whether the class defines the writeReplace method. If the method is defined, the writeReplace method is called to allow the object to designate its replacement in the stream. The object returned should be either of the same type as the object passed in or an object that when read and resolved will result in an object of a type that is compatible with all references to the object.- Returns:
- the replaced object
- Throws:
ObjectStreamException
- if an error occurs
-
stream
- Specified by:
stream
in interfaceCollection<E>
-
parallelStream
- Specified by:
parallelStream
in interfaceCollection<E>
-
trimToSize
public void trimToSize()- Overrides:
trimToSize
in classArrayList<E>
-
ensureCapacity
public void ensureCapacity(int minCapacity) - Overrides:
ensureCapacity
in classArrayList<E>
-
forEach
-
spliterator
- Specified by:
spliterator
in interfaceCollection<E>
- Specified by:
spliterator
in interfaceIterable<E>
- Specified by:
spliterator
in interfaceList<E>
- Overrides:
spliterator
in classArrayList<E>
-
sort
-