com.tinkerpop.blueprints.impls.orient

Class OrientEdge

java.lang.Object

com.tinkerpop.blueprints.impls.orient.OrientElement

com.tinkerpop.blueprints.impls.orient.OrientEdge

All Implemented Interfaces:

OIdentifiable, OSerializableStream, com.tinkerpop.blueprints.Edge, com.tinkerpop.blueprints.Element, Externalizable, Serializable, Comparable<OIdentifiable>, Comparator<OIdentifiable>

public class OrientEdge
extends OrientElement
implements com.tinkerpop.blueprints.Edge

OrientDB Edge implementation of TinkerPop Blueprints standard. Edges can be classic or lightweight. Lightweight edges have no properties and have no identity on database. Lightweight edges are created by default when an Edge is created without properties. To disable this option execute this command against the database: alter database custom useLightweightEdges=false .

Author:

Luca Garulli (l.garulli--(at)--orientdb.com) (http://orientdb.com)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected String	label
protected OIdentifiable	vIn
protected OIdentifiable	vOut

Fields inherited from class com.tinkerpop.blueprints.impls.orient.OrientElement

classicDetachMode, DEF_ORIGINAL_ID_FIELDNAME, LABEL_FIELD_NAME, rawElement, settings

Constructor Summary

Constructors

Modifier	Constructor and Description
	OrientEdge() (Internal) Called by serialization
protected	OrientEdge(OrientBaseGraph rawGraph, OIdentifiable rawEdge)
protected	OrientEdge(OrientBaseGraph rawGraph, OIdentifiable out, OIdentifiable in, String iLabel)
protected	OrientEdge(OrientBaseGraph rawGraph, OIdentifiable rawEdge, String iLabel)
protected	OrientEdge(OrientBaseGraph rawGraph, String iLabel, Object... fields)

Method Summary

Modifier and Type	Method and Description
void	convertToDocument() (Blueprints Extension) Converts the lightweight edge to a regular edge creating the underlying document to store edge's properties.
protected ODocument	createDocument(String iLabel)
protected boolean	dropEdgeFromVertex(OIdentifiable iEdge, ODocument iVertex, String iFieldName, Object iFieldValue)
boolean	equals(Object object)
String	getBaseClassName() (Blueprints Extension) Returns "E" as base class name all the edge's sub-classes extend.
String	getClassName(String iLabel) (Blueprints Extension) Returns the class name based on graph settings.
static OIdentifiable	getConnection(ODocument iEdgeRecord, com.tinkerpop.blueprints.Direction iDirection)
String	getElementType() (Blueprints Extension) Returns "Edge".
Object	getId() Returns the Edge Id assuring to save it if it's transient yet.
OIdentifiable	getInVertex() (Blueprints Extension) Returns the incoming vertex in form of record.
String	getLabel() Returns the Edge's label.
OIdentifiable	getOutVertex() (Blueprints Extension) Returns the outgoing vertex in form of record.
Map<String,Object>	getProperties() (Blueprints Extension) Gets all the properties from a Vertex or Edge in one shot.
<T> T	getProperty(String key) Returns a Property value.
Set<String>	getPropertyKeys() Returns all the Property names as Set of String.
ODocument	getRecord() (Blueprints Extension) Returns the underlying record if it's a regular edge, otherwise it created a document with no identity with the edge properties.
static String	getRecordLabel(OIdentifiable iEdge) (Blueprints Extension) Returns the record label if any, otherwise NULL.
OrientEdgeType	getType()
OrientVertex	getVertex(com.tinkerpop.blueprints.Direction direction) Returns the connected incoming or outgoing vertex.
boolean	isLabeled(String[] iLabels) Returns true if the edge is labeled with any of the passed strings.
static boolean	isLabeled(String iEdgeLabel, String[] iLabels) (Blueprints Extension) Returns true if the edge is labeled with any of the passed strings.
boolean	isLightweight()
void	readExternal(ObjectInput in)
void	remove() Removes the Edge from the Graph.
<T> T	removeProperty(String key) Removed a Property.
void	setProperty(String key, Object value) Set a Property value.
String	toString() Returns a string representation of the edge.
void	writeExternal(ObjectOutput out)

Methods inherited from class com.tinkerpop.blueprints.impls.orient.OrientElement

attach, checkClass, checkDeletedInTx, checkForClassInSchema, checkIfAttached, compare, compareTo, copyTo, detach, fromStream, getGraph, getIdentity, hashCode, isDetached, isLocked, lock, lockingStrategy, reload, save, save, setCurrentGraphInThreadLocal, setProperties, setPropertiesInternal, setProperty, setPropertyInternal, switchToAutoAttachmentMode, switchToManualAttachmentMode, toStream, unlock, validateProperty

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Detail

vOut

protected OIdentifiable vOut

vIn

protected OIdentifiable vIn

label

protected String label

Constructor Detail

OrientEdge

public OrientEdge()

(Internal) Called by serialization

OrientEdge

protected OrientEdge(OrientBaseGraph rawGraph,
                     OIdentifiable rawEdge)

OrientEdge

protected OrientEdge(OrientBaseGraph rawGraph,
                     OIdentifiable rawEdge,
                     String iLabel)

OrientEdge

protected OrientEdge(OrientBaseGraph rawGraph,
                     String iLabel,
                     Object... fields)

OrientEdge

protected OrientEdge(OrientBaseGraph rawGraph,
                     OIdentifiable out,
                     OIdentifiable in,
                     String iLabel)

Method Detail

getConnection

public static OIdentifiable getConnection(ODocument iEdgeRecord,
                                          com.tinkerpop.blueprints.Direction iDirection)

isLabeled

public static boolean isLabeled(String iEdgeLabel,
                                String[] iLabels)

(Blueprints Extension) Returns true if the edge is labeled with any of the passed strings.

Parameters:

iEdgeLabel - Label of current edge

iLabels - Labels as array of Strings

Returns:

true if the edge is labeled with any of the passed strings

getRecordLabel

public static String getRecordLabel(OIdentifiable iEdge)

(Blueprints Extension) Returns the record label if any, otherwise NULL.

Parameters:

iEdge - Edge instance

getType

public OrientEdgeType getType()

getVertex

public OrientVertex getVertex(com.tinkerpop.blueprints.Direction direction)

Returns the connected incoming or outgoing vertex.

Specified by:

getVertex in interface com.tinkerpop.blueprints.Edge

Parameters:

direction - Direction between IN or OUT

getOutVertex

public OIdentifiable getOutVertex()

(Blueprints Extension) Returns the outgoing vertex in form of record.

getInVertex

public OIdentifiable getInVertex()

(Blueprints Extension) Returns the incoming vertex in form of record.

getLabel

public String getLabel()

Returns the Edge's label. By default OrientDB binds the Blueprints Label concept to Edge Class. To disable this feature execute this at database level alter database custom useClassForEdgeLabel=false

Specified by:

getLabel in interface com.tinkerpop.blueprints.Edge

Specified by:

getLabel in class OrientElement

equals

public boolean equals(Object object)

Specified by:

equals in interface Comparator<OIdentifiable>

Overrides:

equals in class OrientElement

getId

public Object getId()

Returns the Edge Id assuring to save it if it's transient yet.

Specified by:

getId in interface com.tinkerpop.blueprints.Element

Overrides:

getId in class OrientElement

getProperty

public <T> T getProperty(String key)

Returns a Property value.

Specified by:

getProperty in interface com.tinkerpop.blueprints.Element

Overrides:

getProperty in class OrientElement

Parameters:

key - Property name

Returns:

Property value if any, otherwise NULL.

isLightweight

public boolean isLightweight()

getPropertyKeys

public Set<String> getPropertyKeys()

Returns all the Property names as Set of String. out, in and label are not returned as properties even if are part of the underlying document because are considered internal properties.

Specified by:

getPropertyKeys in interface com.tinkerpop.blueprints.Element

getProperties

public Map<String,Object> getProperties()

Description copied from class: OrientElement

(Blueprints Extension) Gets all the properties from a Vertex or Edge in one shot.

Specified by:

getProperties in class OrientElement

Returns:

a map containing all the properties of the Vertex/Edge.

setProperty

public void setProperty(String key,
                        Object value)

Set a Property value. If the edge is lightweight, it's transparently transformed into a regular edge.

Specified by:

setProperty in interface com.tinkerpop.blueprints.Element

Overrides:

setProperty in class OrientElement

Parameters:

key - Property name

value - Property value

removeProperty

public <T> T removeProperty(String key)

Removed a Property.

Specified by:

removeProperty in interface com.tinkerpop.blueprints.Element

Overrides:

removeProperty in class OrientElement

Parameters:

key - Property name

Returns:

Old value if any

remove

public void remove()

Removes the Edge from the Graph. Connected vertices aren't removed.

Specified by:

remove in interface com.tinkerpop.blueprints.Element

getBaseClassName

public final String getBaseClassName()

(Blueprints Extension) Returns "E" as base class name all the edge's sub-classes extend.

Specified by:

getBaseClassName in class OrientElement

getElementType

public String getElementType()

(Blueprints Extension) Returns "Edge".

Specified by:

getElementType in class OrientElement

toString

public String toString()

Returns a string representation of the edge.

Overrides:

toString in class Object

getRecord

public ODocument getRecord()

(Blueprints Extension) Returns the underlying record if it's a regular edge, otherwise it created a document with no identity with the edge properties.

Specified by:

getRecord in interface OIdentifiable

Overrides:

getRecord in class OrientElement

Returns:

ORecord instance

convertToDocument

public void convertToDocument()

(Blueprints Extension) Converts the lightweight edge to a regular edge creating the underlying document to store edge's properties.

getClassName

public String getClassName(String iLabel)

(Blueprints Extension) Returns the class name based on graph settings.

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class OrientElement

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class OrientElement

Throws:

IOException

ClassNotFoundException

isLabeled

public boolean isLabeled(String[] iLabels)

Returns true if the edge is labeled with any of the passed strings.

Parameters:

iLabels - Labels as array of Strings

Returns:

true if the edge is labeled with any of the passed strings

createDocument

protected ODocument createDocument(String iLabel)

dropEdgeFromVertex

protected boolean dropEdgeFromVertex(OIdentifiable iEdge,
                                     ODocument iVertex,
                                     String iFieldName,
                                     Object iFieldValue)