overflowdb

Class Graph

java.lang.Object

overflowdb.Graph

All Implemented Interfaces:

java.lang.AutoCloseable

public final class Graph
extends java.lang.Object
implements java.lang.AutoCloseable

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.concurrent.atomic.AtomicLong	currentId
protected java.util.Map<java.lang.String,EdgeFactory>	edgeFactoryByLabel
protected java.util.Optional<HeapUsageMonitor>	heapUsageMonitor
IndexManager	indexManager
protected NodeDeserializer	nodeDeserializer
protected java.util.Map<java.lang.String,NodeFactory>	nodeFactoryByLabel
protected NodesList	nodes
NodeSerializer	nodeSerializer
protected ReferenceManager	referenceManager
protected OdbStorage	storage

Method Summary

Modifier and Type	Method and Description
Node	addNode(long id, java.lang.String label, java.lang.Object... keyValues)
Node	addNode(java.lang.String label, java.lang.Object... keyValues)
void	close() if the config.graphLocation is set, data in the graph is persisted to that location.
void	copyTo(Graph destination) Copies all nodes/edges into the given empty graph, preserving their ids and properties.
java.util.Iterator<Edge>	E() Iterator over all edges - alias for `edges`
int	edgeCount() calculates the number of edges in the graph Note: this is an expensive operation, because edges are stored as part of the nodes
java.util.Iterator<Edge>	edges() Iterator over all edges
java.util.Iterator<Edge>	edges(java.lang.String label) Iterator over edges with given label
java.util.ArrayList<java.util.Map<java.lang.String,java.lang.String>>	getAllLibraryVersions()
OdbStorage	getStorage()
boolean	isClosed()
Node	node(long id)
int	nodeCount()
int	nodeCount(java.lang.String label)
java.util.Iterator<Node>	nodes() Iterator over all nodes
java.util.Iterator<Node>	nodes(long... ids) Iterator over nodes with provided ids note: this behaves differently from the tinkerpop api, in that it returns no nodes if no ids are provided
java.util.Iterator<Node>	nodes(java.util.function.Predicate<java.lang.String> labelPredicate)
java.util.Iterator<Node>	nodes(java.util.Set<java.lang.String> labels)
java.util.Iterator<Node>	nodes(java.lang.String... labels)
java.util.Iterator<Node>	nodes(java.lang.String label)
static Graph	open(Config configuration, java.util.List<NodeFactory<?>> nodeFactories, java.util.List<EdgeFactory<?>> edgeFactories)
void	persistLibraryVersion(java.lang.Class clazz)
void	persistLibraryVersion(java.lang.String name, java.lang.String version)
void	remove(Node node)
java.lang.String	toString()
java.util.Iterator<Node>	V() Iterator over all nodes - alias for `nodes`
java.util.Iterator<Node>	V(long... ids) Iterator over nodes with provided ids - alias for `nodes(ids...)` note: does not return any nodes if no ids are provided

Methods inherited from class java.lang.Object

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

Field Detail

currentId

protected final java.util.concurrent.atomic.AtomicLong currentId

nodes

protected final NodesList nodes

indexManager

public final IndexManager indexManager

nodeFactoryByLabel

protected final java.util.Map<java.lang.String,NodeFactory> nodeFactoryByLabel

edgeFactoryByLabel

protected final java.util.Map<java.lang.String,EdgeFactory> edgeFactoryByLabel

storage

protected final OdbStorage storage

nodeSerializer

public final NodeSerializer nodeSerializer

nodeDeserializer

protected final NodeDeserializer nodeDeserializer

heapUsageMonitor

protected final java.util.Optional<HeapUsageMonitor> heapUsageMonitor

referenceManager

protected final ReferenceManager referenceManager

Method Detail

open

public static Graph open(Config configuration,
                         java.util.List<NodeFactory<?>> nodeFactories,
                         java.util.List<EdgeFactory<?>> edgeFactories)

addNode

public Node addNode(java.lang.String label,
                    java.lang.Object... keyValues)

addNode

public Node addNode(long id,
                    java.lang.String label,
                    java.lang.Object... keyValues)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

close

public void close()

if the config.graphLocation is set, data in the graph is persisted to that location.

Specified by:

close in interface java.lang.AutoCloseable

nodeCount

public int nodeCount()

nodeCount

public int nodeCount(java.lang.String label)

edgeCount

public int edgeCount()

calculates the number of edges in the graph Note: this is an expensive operation, because edges are stored as part of the nodes

E

public java.util.Iterator<Edge> E()

Iterator over all edges - alias for `edges`

edges

public java.util.Iterator<Edge> edges()

Iterator over all edges

edges

public java.util.Iterator<Edge> edges(java.lang.String label)

Iterator over edges with given label

V

public java.util.Iterator<Node> V()

Iterator over all nodes - alias for `nodes`

nodes

public final java.util.Iterator<Node> nodes()

Iterator over all nodes

V

public java.util.Iterator<Node> V(long... ids)

Iterator over nodes with provided ids - alias for `nodes(ids...)` note: does not return any nodes if no ids are provided

node

public final Node node(long id)

nodes

public final java.util.Iterator<Node> nodes(long... ids)

Iterator over nodes with provided ids note: this behaves differently from the tinkerpop api, in that it returns no nodes if no ids are provided

nodes

public java.util.Iterator<Node> nodes(java.lang.String label)

nodes

public java.util.Iterator<Node> nodes(java.lang.String... labels)

nodes

public java.util.Iterator<Node> nodes(java.util.Set<java.lang.String> labels)

nodes

public java.util.Iterator<Node> nodes(java.util.function.Predicate<java.lang.String> labelPredicate)

isClosed

public boolean isClosed()

getStorage

public OdbStorage getStorage()

copyTo

public void copyTo(Graph destination)

Copies all nodes/edges into the given empty graph, preserving their ids and properties.

remove

public void remove(Node node)

persistLibraryVersion

public void persistLibraryVersion(java.lang.Class clazz)

persistLibraryVersion

public void persistLibraryVersion(java.lang.String name,
                                  java.lang.String version)

getAllLibraryVersions

public java.util.ArrayList<java.util.Map<java.lang.String,java.lang.String>> getAllLibraryVersions()