com.adobe.granite.socialgraph

Interface GraphNode

All Superinterfaces:

java.util.Map<java.lang.String,java.lang.Object>

All Known Subinterfaces:

Vertex

public interface GraphNode
extends java.util.Map<java.lang.String,java.lang.Object>

The GraphNode represents a user in the social graph.

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Method Summary

Modifier and Type	Method and Description
Relationship	createRelationshipTo(GraphNode other, java.lang.String type) Creates a relationship to the given node.
void	delete() Deletes this graph node and all outgoing relationships.
<T> T	get(java.lang.String name, java.lang.Class<T> type) Get a named property and convert it into the given type.
<T> T	get(java.lang.String name, T defaultValue) Get a named property and convert it into the given type.
java.lang.String	getId() Returns the id of this node.
Relationship	getRelationship(Direction dir, GraphNode node, java.lang.String type) Returns the relationship between this and the give node in the specified direction and type.
java.lang.Iterable<Relationship>	getRelationships(Direction dir, java.lang.String... types) Returns the relationships attached to this node of the specific type and direction.
Resource	getResource() Returns the resource of object addressed by id or null if it does not exist.
boolean	isVirtual() Deprecated. virtual nodes are no longer supported.

Methods inherited from interface java.util.Map

clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Method Detail

getId

java.lang.String getId()

Returns the id of this node.

Returns:

the id.

getResource

Resource getResource()

Returns the resource of object addressed by id or null if it does not exist.

Returns:

the resource.

isVirtual

@Deprecated
boolean isVirtual()

Deprecated. virtual nodes are no longer supported.

Specifies tha this node is virtual and is not (and will never be) backed by a persistence object.

Returns:

true if this node is virtual.

createRelationshipTo

Relationship createRelationshipTo(GraphNode other,
                                  java.lang.String type)

Creates a relationship to the given node.

Parameters:

other - the other node

type - the type of the relationship

Returns:

the relationship

Throws:

java.lang.IllegalArgumentException - if the relationship already exists

SocialGraphException - if an error during this operation occurs.

delete

void delete()

Deletes this graph node and all outgoing relationships. TODO: specify what should happen to incoming relationships

getRelationships

java.lang.Iterable<Relationship> getRelationships(Direction dir,
                                                  java.lang.String... types)

Returns the relationships attached to this node of the specific type and direction.

Parameters:

dir - the direction

types - the types of relationships to return.

Returns:

a collection of relationships

getRelationship

Relationship getRelationship(Direction dir,
                             GraphNode node,
                             java.lang.String type)

Returns the relationship between this and the give node in the specified direction and type. Example: if A --[follows]--> B, then B.getRelationShip(Direction.OUTGOING, A, "follows") and, A.getRelationShip(Direction.INCOMING, B, "follows") Both return the same relationship defined above.

Parameters:

dir - direction of the relationship to return

node - the other node

type - the type of relationship

Returns:

the desired relationship or null

get

<T> T get(java.lang.String name,
          java.lang.Class<T> type)

Get a named property and convert it into the given type.

Type Parameters:

T - the type

Parameters:

name - The name of the property

type - The class of the type

Returns:

Return named value converted to type T or null if non existing or can't be converted.

get

<T> T get(java.lang.String name,
          T defaultValue)

Get a named property and convert it into the given type.

Type Parameters:

T - the type

Parameters:

name - The name of the property

defaultValue - The default value to use if the named property does not exist or cannot be converted to the requested type. The default value is also used to define the type to convert the value to. If this is null any existing property is not converted.

Returns:

Return named value converted to type T or the default value if non existing or can't be converted.