com.impetus.kundera.graph

Class ObjectGraphBuilder

java.lang.Object

com.impetus.kundera.graph.ObjectGraphBuilder

public class ObjectGraphBuilder
extends Object

Responsible for generating ObjectGraph of nodes from a given entity

Author:

amresh.singh

Field Summary

Fields

Modifier and Type	Field and Description
private IdGenerator	idGenerator
private PersistenceDelegator	pd
private PersistenceCache	persistenceCache
private PersistenceValidator	validator

Constructor Summary

Constructors

Constructor and Description
ObjectGraphBuilder(PersistenceCache pcCache, PersistenceDelegator pd)

Method Summary

Methods

Modifier and Type	Method and Description
private void	addChildNodesToGraph(ObjectGraph graph, Node node, Relation relation, Object childObject, NodeState initialNodeState)
private NodeState	getChildNodeState(EntityMetadata metadata, Object childObj)
private Map<NodeLink.LinkProperty,Object>	getLinkProperties(EntityMetadata metadata, Relation relation)
private Node	getNode(Object entity, ObjectGraph graph, NodeState initialNodeState) Constructs and returns Node representation for a given entity object.
ObjectGraph	getObjectGraph(Object entity, NodeState initialNodeState)
private boolean	isIdSet(Object id)

Methods inherited from class java.lang.Object

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

Field Detail

persistenceCache

private PersistenceCache persistenceCache

pd

private PersistenceDelegator pd

idGenerator

private IdGenerator idGenerator

validator

private PersistenceValidator validator

Constructor Detail

ObjectGraphBuilder

public ObjectGraphBuilder(PersistenceCache pcCache,
                  PersistenceDelegator pd)

Method Detail

getObjectGraph

public ObjectGraph getObjectGraph(Object entity,
                         NodeState initialNodeState)

getNode

private Node getNode(Object entity,
           ObjectGraph graph,
           NodeState initialNodeState)

Constructs and returns Node representation for a given entity object. Output is fully constructed graph with relationships embedded. Each node is put into graph once it is constructed.

Parameters:

entity -

Returns:

getChildNodeState

private NodeState getChildNodeState(EntityMetadata metadata,
                          Object childObj)

addChildNodesToGraph

private void addChildNodesToGraph(ObjectGraph graph,
                        Node node,
                        Relation relation,
                        Object childObject,
                        NodeState initialNodeState)

Parameters:

graph -

node -

relation -

childObject -

getLinkProperties

private Map<NodeLink.LinkProperty,Object> getLinkProperties(EntityMetadata metadata,
                                                  Relation relation)

Parameters:

metadata - Entity metadata of the parent node

relation -

Returns:

isIdSet

private boolean isIdSet(Object id)