com.impetus.kundera.graph

Class Node

java.lang.Object

com.impetus.kundera.graph.Node

All Implemented Interfaces:

NodeStateContext

public class Node
extends Object
implements NodeStateContext

Represents a node in object graph

Author:

amresh.singh

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	Node.EntityEvent

Field Summary

Fields

Modifier and Type	Field and Description
private Map<NodeLink,Node>	children
private Client	client Client for this node
private NodeState	currentNodeState
private Object	data
private Class<?>	dataClass
private boolean	dirty
private Object	entityId
private EntityEventDispatcher	eventDispatcher
private boolean	isGraphCompleted
private boolean	isProcessed
private boolean	isUpdate
private String	nodeId
private Node	originalNode
private Map<NodeLink,Node>	parents
private PersistenceDelegator	pd
private PersistenceCache	persistenceCache
private boolean	traversed

Constructor Summary

Constructors

Modifier	Constructor and Description
	Node(String nodeId, Class<?> nodeDataClass, NodeState initialNodeState, PersistenceCache pc, Object primaryKey, PersistenceDelegator pd)
(package private)	Node(String nodeId, Object data, NodeState initialNodeState, PersistenceCache pc, Object primaryKey, PersistenceDelegator pd)
private	Node(String nodeId, Object data, PersistenceCache pc, Object primaryKey, PersistenceDelegator pd)

Method Summary

Methods

Modifier and Type	Method and Description
void	addChildNode(NodeLink nodeLink, Node node)
void	addParentNode(NodeLink nodeLink, Node node)
void	clear()
Node	clone()
void	close()
void	commit()
void	contains()
void	detach()
boolean	equals(Object otherNode)
void	find()
void	flush()
Node	getChildNode(String childNodeId) Retrieves child node of this node for a given child node ID
Map<NodeLink,Node>	getChildren()
Client	getClient()
NodeState	getCurrentNodeState()
Object	getData()
Class	getDataClass()
Object	getEntityId()
String	getNodeId()
Node	getOriginalNode()
Node	getParentNode(String parentNodeId) Retrieves parent node of this node for a given parent node ID
Map<NodeLink,Node>	getParents()
PersistenceCache	getPersistenceCache()
PersistenceDelegator	getPersistenceDelegator()
void	getReference()
void	handlePostEvent()
void	handlePreEvent()
int	hashCode()
private void	initializeNode(String nodeId, Object data, Object primaryKey, PersistenceDelegator pd)
boolean	isDirty()
(package private) boolean	isGraphCompleted()
boolean	isHeadNode()
boolean	isInState(Class<?> stateClass)
boolean	isProcessed()
boolean	isTraversed()
boolean	isUpdate()
void	lock()
void	merge()
private void	onPostEvent(EntityMetadata metadata, Node.EntityEvent event)
private void	onPreEvent(EntityMetadata metadata, Node.EntityEvent event)
void	persist()
void	refresh()
void	remove()
void	rollback()
void	setChildren(Map<NodeLink,Node> children)
void	setClient(Client client)
void	setCurrentNodeState(NodeState currentNodeState)
void	setData(Object data)
void	setDataClass(Class dataClass)
void	setDirty(boolean dirty)
void	setEntityId(Object id)
(package private) void	setGraphCompleted(boolean isGraphCompleted)
void	setNodeId(String nodeId)
void	setOriginalNode(Node originalNode)
void	setParents(Map<NodeLink,Node> parents)
void	setPersistenceCache(PersistenceCache persistenceCache)
void	setPersistenceDelegator(PersistenceDelegator pd)
void	setTraversed(boolean traversed)
void	setUpdate(boolean isUpdate)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

nodeId

private String nodeId

entityId

private Object entityId

data

private Object data

currentNodeState

private NodeState currentNodeState

dataClass

private Class<?> dataClass

parents

private Map<NodeLink,Node> parents

children

private Map<NodeLink,Node> children

traversed

private boolean traversed

dirty

private boolean dirty

isUpdate

private boolean isUpdate

client

private Client client

Client for this node

persistenceCache

private PersistenceCache persistenceCache

isGraphCompleted

private boolean isGraphCompleted

pd

private PersistenceDelegator pd

originalNode

private Node originalNode

isProcessed

private boolean isProcessed

eventDispatcher

private EntityEventDispatcher eventDispatcher

Constructor Detail

Node

private Node(String nodeId,
    Object data,
    PersistenceCache pc,
    Object primaryKey,
    PersistenceDelegator pd)

Node

Node(String nodeId,
    Object data,
    NodeState initialNodeState,
    PersistenceCache pc,
    Object primaryKey,
    PersistenceDelegator pd)

Node

public Node(String nodeId,
    Class<?> nodeDataClass,
    NodeState initialNodeState,
    PersistenceCache pc,
    Object primaryKey,
    PersistenceDelegator pd)

Method Detail

initializeNode

private void initializeNode(String nodeId,
                  Object data,
                  Object primaryKey,
                  PersistenceDelegator pd)

getNodeId

public String getNodeId()

Specified by:

getNodeId in interface NodeStateContext

Returns:

the nodeId

setNodeId

public void setNodeId(String nodeId)

Specified by:

setNodeId in interface NodeStateContext

Parameters:

nodeId - the nodeId to set

getData

public Object getData()

Specified by:

getData in interface NodeStateContext

Returns:

the data

setData

public void setData(Object data)

Specified by:

setData in interface NodeStateContext

Parameters:

data - the data to set

getDataClass

public Class getDataClass()

Specified by:

getDataClass in interface NodeStateContext

Returns:

the dataClass

setDataClass

public void setDataClass(Class dataClass)

Specified by:

setDataClass in interface NodeStateContext

Parameters:

dataClass - the dataClass to set

getCurrentNodeState

public NodeState getCurrentNodeState()

Specified by:

getCurrentNodeState in interface NodeStateContext

Returns:

the currentNodeState

setCurrentNodeState

public void setCurrentNodeState(NodeState currentNodeState)

Specified by:

setCurrentNodeState in interface NodeStateContext

Parameters:

currentNodeState - the currentNodeState to set

getParents

public Map<NodeLink,Node> getParents()

Specified by:

getParents in interface NodeStateContext

Returns:

the parents

setParents

public void setParents(Map<NodeLink,Node> parents)

Specified by:

setParents in interface NodeStateContext

Parameters:

parents - the parents to set

getChildren

public Map<NodeLink,Node> getChildren()

Specified by:

getChildren in interface NodeStateContext

Returns:

the children

setChildren

public void setChildren(Map<NodeLink,Node> children)

Specified by:

setChildren in interface NodeStateContext

Parameters:

children - the children to set

isHeadNode

public boolean isHeadNode()

Specified by:

isHeadNode in interface NodeStateContext

Returns:

the isHeadNode

getParentNode

public Node getParentNode(String parentNodeId)

Retrieves parent node of this node for a given parent node ID

Specified by:

getParentNode in interface NodeStateContext

getChildNode

public Node getChildNode(String childNodeId)

Retrieves child node of this node for a given child node ID

Specified by:

getChildNode in interface NodeStateContext

addParentNode

public void addParentNode(NodeLink nodeLink,
                 Node node)

Specified by:

addParentNode in interface NodeStateContext

addChildNode

public void addChildNode(NodeLink nodeLink,
                Node node)

Specified by:

addChildNode in interface NodeStateContext

isTraversed

public boolean isTraversed()

Specified by:

isTraversed in interface NodeStateContext

Returns:

the traversed

setTraversed

public void setTraversed(boolean traversed)

Specified by:

setTraversed in interface NodeStateContext

Parameters:

traversed - the traversed to set

isDirty

public boolean isDirty()

Specified by:

isDirty in interface NodeStateContext

Returns:

the dirty

setDirty

public void setDirty(boolean dirty)

Specified by:

setDirty in interface NodeStateContext

Parameters:

dirty - the dirty to set

getClient

public Client getClient()

Specified by:

getClient in interface NodeStateContext

Returns:

the client

setClient

public void setClient(Client client)

Specified by:

setClient in interface NodeStateContext

Parameters:

client - the client to set

getPersistenceDelegator

public PersistenceDelegator getPersistenceDelegator()

Specified by:

getPersistenceDelegator in interface NodeStateContext

setPersistenceDelegator

public void setPersistenceDelegator(PersistenceDelegator pd)

Specified by:

setPersistenceDelegator in interface NodeStateContext

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object otherNode)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

persist

public void persist()

Specified by:

persist in interface NodeStateContext

remove

public void remove()

Specified by:

remove in interface NodeStateContext

refresh

public void refresh()

Specified by:

refresh in interface NodeStateContext

merge

public void merge()

Specified by:

merge in interface NodeStateContext

detach

public void detach()

Specified by:

detach in interface NodeStateContext

close

public void close()

Specified by:

close in interface NodeStateContext

lock

public void lock()

Specified by:

lock in interface NodeStateContext

commit

public void commit()

Specified by:

commit in interface NodeStateContext

rollback

public void rollback()

Specified by:

rollback in interface NodeStateContext

find

public void find()

Specified by:

find in interface NodeStateContext

getReference

public void getReference()

Specified by:

getReference in interface NodeStateContext

contains

public void contains()

Specified by:

contains in interface NodeStateContext

clear

public void clear()

Specified by:

clear in interface NodeStateContext

flush

public void flush()

Specified by:

flush in interface NodeStateContext

isInState

public boolean isInState(Class<?> stateClass)

Specified by:

isInState in interface NodeStateContext

getPersistenceCache

public PersistenceCache getPersistenceCache()

Specified by:

getPersistenceCache in interface NodeStateContext

setPersistenceCache

public void setPersistenceCache(PersistenceCache persistenceCache)

Specified by:

setPersistenceCache in interface NodeStateContext

isGraphCompleted

boolean isGraphCompleted()

Returns:

the isGraphCompleted

setGraphCompleted

void setGraphCompleted(boolean isGraphCompleted)

Parameters:

isGraphCompleted - the isGraphCompleted to set

getOriginalNode

public Node getOriginalNode()

Returns:

the originalNode

setOriginalNode

public void setOriginalNode(Node originalNode)

Parameters:

originalNode - the originalNode to set

isProcessed

public boolean isProcessed()

Returns:

the isProcessed

isUpdate

public boolean isUpdate()

Returns:

the isUpdate

setUpdate

public void setUpdate(boolean isUpdate)

Parameters:

isUpdate - the isUpdate to set

clone

public Node clone()

Overrides:

clone in class Object

getEntityId

public Object getEntityId()

Specified by:

getEntityId in interface NodeStateContext

setEntityId

public void setEntityId(Object id)

handlePreEvent

public void handlePreEvent()

handlePostEvent

public void handlePostEvent()

onPreEvent

private void onPreEvent(EntityMetadata metadata,
              Node.EntityEvent event)

onPostEvent

private void onPostEvent(EntityMetadata metadata,
               Node.EntityEvent event)