Package com.arcadedb.graph

Class GraphEngine

java.lang.Object

com.arcadedb.graph.GraphEngine

public class GraphEngine
extends Object

Central class to work with graphs. This is not intended to be used by the end user, but rather from Vertex and Edge classes.

Author:

Luca Garulli ([email protected])

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	GraphEngine.CreateEdgeOperation

Field Summary

Fields

Modifier and Type	Field	Description
static String	IN_EDGES_SUFFIX
static String	OUT_EDGES_SUFFIX

Constructor Summary

Constructors

Constructor	Description
GraphEngine(DatabaseInternal database)

Method Summary

Modifier and Type	Method	Description
Map<String,Object>	checkEdges(String typeName, boolean fix, int verboseLevel)
Map<String,Object>	checkVertices(String typeName, boolean fix, int verboseLevel)
void	connectEdge(VertexInternal fromVertex, Identifiable toVertex, Edge edge, boolean bidirectional)
void	connectIncomingEdge(Identifiable toVertex, RID fromVertexRID, RID edgeRID)
long	countEdges(VertexInternal vertex, Vertex.DIRECTION direction, String edgeType)
EdgeSegment	createInEdgeChunk(MutableVertex toVertex)
EdgeSegment	createOutEdgeChunk(MutableVertex fromVertex)
void	createVertexType(VertexType type)
void	deleteEdge(Edge edge)
void	deleteVertex(VertexInternal vertex)
void	dropVertexType(VertexType type)
EdgeLinkedList	getEdgeHeadChunk(VertexInternal vertex, Vertex.DIRECTION direction)
Iterable<Edge>	getEdges(VertexInternal vertex)
Iterable<Edge>	getEdges(VertexInternal vertex, Vertex.DIRECTION direction, String... edgeTypes)
String	getEdgesBucketName(int bucketId, Vertex.DIRECTION direction)
Iterable<Vertex>	getVertices(VertexInternal vertex)	Returns all the connected vertices, both directions, any edge type.
Iterable<Vertex>	getVertices(VertexInternal vertex, Vertex.DIRECTION direction, String... edgeTypes)	Returns the connected vertices.
boolean	isVertexConnectedTo(VertexInternal vertex, Identifiable toVertex)
boolean	isVertexConnectedTo(VertexInternal vertex, Identifiable toVertex, Vertex.DIRECTION direction)
boolean	isVertexConnectedTo(VertexInternal vertex, Identifiable toVertex, Vertex.DIRECTION direction, String edgeType)
MutableEdge	newEdge(VertexInternal fromVertex, String edgeTypeName, Identifiable toVertex, boolean bidirectional, Object... edgeProperties)
List<Edge>	newEdges(VertexInternal sourceVertex, List<GraphEngine.CreateEdgeOperation> connections, boolean bidirectional)
ImmutableLightEdge	newLightEdge(VertexInternal fromVertex, String edgeTypeName, Identifiable toVertex, boolean bidirectional)
static void	setProperties(MutableDocument edge, Object[] properties)
void	upgradeEdge(VertexInternal fromVertex, Identifiable toVertex, MutableEdge edge, boolean bidirectional)
void	upgradeIncomingEdge(Identifiable toVertex, RID fromVertexRID, RID edgeRID)

Methods inherited from class java.lang.Object

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

Field Detail

OUT_EDGES_SUFFIX

public static final String OUT_EDGES_SUFFIX

See Also:

Constant Field Values

IN_EDGES_SUFFIX

public static final String IN_EDGES_SUFFIX

See Also:

Constant Field Values

Constructor Detail

GraphEngine

public GraphEngine(DatabaseInternal database)

Method Detail

createVertexType

public void createVertexType(VertexType type)

dropVertexType

public void dropVertexType(VertexType type)

newLightEdge

public ImmutableLightEdge newLightEdge(VertexInternal fromVertex,
                                       String edgeTypeName,
                                       Identifiable toVertex,
                                       boolean bidirectional)

newEdge

public MutableEdge newEdge(VertexInternal fromVertex,
                           String edgeTypeName,
                           Identifiable toVertex,
                           boolean bidirectional,
                           Object... edgeProperties)

connectEdge

public void connectEdge(VertexInternal fromVertex,
                        Identifiable toVertex,
                        Edge edge,
                        boolean bidirectional)

upgradeEdge

public void upgradeEdge(VertexInternal fromVertex,
                        Identifiable toVertex,
                        MutableEdge edge,
                        boolean bidirectional)

upgradeIncomingEdge

public void upgradeIncomingEdge(Identifiable toVertex,
                                RID fromVertexRID,
                                RID edgeRID)

newEdges

public List<Edge> newEdges(VertexInternal sourceVertex,
                           List<GraphEngine.CreateEdgeOperation> connections,
                           boolean bidirectional)

connectIncomingEdge

public void connectIncomingEdge(Identifiable toVertex,
                                RID fromVertexRID,
                                RID edgeRID)

createInEdgeChunk

public EdgeSegment createInEdgeChunk(MutableVertex toVertex)

createOutEdgeChunk

public EdgeSegment createOutEdgeChunk(MutableVertex fromVertex)

countEdges

public long countEdges(VertexInternal vertex,
                       Vertex.DIRECTION direction,
                       String edgeType)

deleteEdge

public void deleteEdge(Edge edge)

deleteVertex

public void deleteVertex(VertexInternal vertex)

getEdges

public Iterable<Edge> getEdges(VertexInternal vertex)

getEdges

public Iterable<Edge> getEdges(VertexInternal vertex,
                               Vertex.DIRECTION direction,
                               String... edgeTypes)

getVertices

public Iterable<Vertex> getVertices(VertexInternal vertex)

Returns all the connected vertices, both directions, any edge type.

Returns:

An iterator of PVertex instances

getVertices

public Iterable<Vertex> getVertices(VertexInternal vertex,
                                    Vertex.DIRECTION direction,
                                    String... edgeTypes)

Returns the connected vertices.

Parameters:

direction - Direction between OUT, IN or BOTH

edgeTypes - Edge type names to filter

Returns:

An iterator of PVertex instances

isVertexConnectedTo

public boolean isVertexConnectedTo(VertexInternal vertex,
                                   Identifiable toVertex)

isVertexConnectedTo

public boolean isVertexConnectedTo(VertexInternal vertex,
                                   Identifiable toVertex,
                                   Vertex.DIRECTION direction)

isVertexConnectedTo

public boolean isVertexConnectedTo(VertexInternal vertex,
                                   Identifiable toVertex,
                                   Vertex.DIRECTION direction,
                                   String edgeType)

getEdgesBucketName

public String getEdgesBucketName(int bucketId,
                                 Vertex.DIRECTION direction)

setProperties

public static void setProperties(MutableDocument edge,
                                 Object[] properties)

getEdgeHeadChunk

public EdgeLinkedList getEdgeHeadChunk(VertexInternal vertex,
                                       Vertex.DIRECTION direction)

checkVertices

public Map<String,Object> checkVertices(String typeName,
                                              boolean fix,
                                              int verboseLevel)

checkEdges

public Map<String,Object> checkEdges(String typeName,
                                           boolean fix,
                                           int verboseLevel)