com.orientechnologies.jdo.types
Class d_Collection

java.lang.Object
  com.orientechnologies.jdo.types.d_Collection

Direct Known Subclasses:

d_Dictionary

public class d_Collection

extends java.lang.Object

Base class for persistent collections. It breaks collections in persistent oCollBlock objects mantaining references and totals.

Field Summary

short	blocks
short	blockSize
oCollBlock	head
protected boolean	relationship
oCollBlock	tail
int	total

Constructor Summary

d_Collection()
Create a Collection.

d_Collection(oPersistenceManager iManager, boolean iRelationship)
Create a Collection.

Method Summary

void	clear() Clear the content of the collection.
boolean	contains(java.lang.Object iFind) Check if an element exists in the collection
int	find(java.lang.Object iFind) Find the position of an element in the collection
void	fromCollection(java.util.Collection iColl) Copy all the content from another collection.
java.lang.Object	get(int iIndex) Get an element by index
void	insert_element(java.lang.Object iElem) Insert an element in the collection.
boolean	isEmpty() Returns if the collection is empty.
boolean	isRelationship() Returns if the collection contains relationships
java.util.Iterator	iterator() Retrieve an iterator for the collection
java.lang.Object	remove(int iIndex) Remove an element by index
java.lang.Object	remove(java.lang.Object iFind) Remove an element from the collection
void	setRelationship(boolean iRelationship) Change the behaviuor to handle relationships
int	size() Returns the size of collection.
void	toCollection(java.util.Collection iColl) Copy all the content to another collection.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

blockSize

public short blockSize

head

public oCollBlock head

tail

public oCollBlock tail

blocks

public short blocks

total

public int total

relationship

protected transient boolean relationship

Constructor Detail

d_Collection

public d_Collection()

Create a Collection.

d_Collection

public d_Collection(oPersistenceManager iManager,
                    boolean iRelationship)

Create a Collection.

Parameters:

iManager - PersistenceManager associated

iRelationship - true if the collection contains relationships

Method Detail

fromCollection

public void fromCollection(java.util.Collection iColl)

Copy all the content from another collection. The content will be updated with current values.

Parameters:

iColl - collection to copy

toCollection

public void toCollection(java.util.Collection iColl)

Copy all the content to another collection.

Parameters:

iColl - collection where to copy.

contains

public boolean contains(java.lang.Object iFind)

Check if an element exists in the collection

Parameters:

iFind - Object to found

Returns:

true if the element is present, otherwise false

find

public int find(java.lang.Object iFind)

Find the position of an element in the collection

Parameters:

iFind - Object to found

Returns:

The position of the object in the collection, -1 if the object was not found

remove

public java.lang.Object remove(java.lang.Object iFind)

Remove an element from the collection

Parameters:

iFind - Object to found

Returns:

true if the object was found and removed, otherwise false

iterator

public java.util.Iterator iterator()

Retrieve an iterator for the collection

Returns:

iterator for the collection

clear

public void clear()

Clear the content of the collection.

insert_element

public void insert_element(java.lang.Object iElem)

Insert an element in the collection.

get

public java.lang.Object get(int iIndex)

Get an element by index

Parameters:

iIndex - index of value to get

Returns:

Object found if any

remove

public java.lang.Object remove(int iIndex)

Remove an element by index

Parameters:

iIndex - index of value to remove

Returns:

Object removed if any

size

public int size()

Returns the size of collection.

Returns:

the number of elements in the collection

isEmpty

public boolean isEmpty()

Returns if the collection is empty.

Returns:

true if the collection is empty, otherwise false

isRelationship

public boolean isRelationship()

Returns if the collection contains relationships

Returns:

true if the collection contains relationships, otherwise false

setRelationship

public void setRelationship(boolean iRelationship)

Change the behaviuor to handle relationships

Parameters:

iRelationship - true or false