iot.jcypher.graph

Class Graph

java.lang.Object

iot.jcypher.graph.Graph

public class Graph
extends Object

Method Summary

Methods

Modifier and Type	Method and Description
static Graph	create(IDBAccess dbAccess) create an empty graph
GrNode	createNode() create a node in the graph
GrRelation	createRelation(String type, GrNode startNode, GrNode endNode) create a relation in the graph
boolean	isModified()
Graph	setLockingStrategy(Locking locking) Set the locking strategy (e.g.
List<JcError>	store() Update the underlying database with changes made on the graph

Methods inherited from class java.lang.Object

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

Method Detail

create

public static Graph create(IDBAccess dbAccess)

create an empty graph

Parameters:

dbAccess - the database on which to perform updates of the graph

Returns:

the empty graph model

setLockingStrategy

public Graph setLockingStrategy(Locking locking)

Set the locking strategy (e.g. Locking.OPTIMISTIC, ...).

Parameters:

locking -

Returns:

the Graph (self) to allow fluent method concatenation.

createNode

public GrNode createNode()

create a node in the graph

Returns:

a GrNode

createRelation

public GrRelation createRelation(String type,
                        GrNode startNode,
                        GrNode endNode)

create a relation in the graph

Parameters:

type -

startNode -

endNode -

Returns:

a GrRelation

isModified

public boolean isModified()

Returns:

true, if the graph contains new or modified elements, or if elements of the graph were removed.

store

public List<JcError> store()

Update the underlying database with changes made on the graph

Returns:

a list of errors, which is empty if no errors occurred