com.thinkaurelius.titan.hadoop

Class FaunusPathElement

java.lang.Object

com.thinkaurelius.titan.hadoop.LifeCycleElement

com.thinkaurelius.titan.hadoop.FaunusElement

com.thinkaurelius.titan.hadoop.FaunusPathElement

All Implemented Interfaces:

Idfiable, TitanElement, InternalElement, Removable, com.tinkerpop.blueprints.Element, Comparable<FaunusElement>, org.apache.hadoop.conf.Configurable, org.apache.hadoop.io.Writable, org.apache.hadoop.io.WritableComparable<FaunusElement>

Direct Known Subclasses:

FaunusVertex, StandardFaunusRelation

public abstract class FaunusPathElement
extends FaunusElement
implements org.apache.hadoop.io.WritableComparable<FaunusElement>, org.apache.hadoop.conf.Configurable

Abstract base class for Faunus vertices and relations. This class must implement Hadoop's Configurable even if no code calls setConf or getConf directly. The reason to implement Configurable is interoperability with Hadoop's WritableSerialization.WritableDeserializer class. The deserializer calls ReflectionUtils.newInstance, which in turn calls x instanceof Configurable and then calls setConf when true. IOW, implementing Configurable is important because that's how path elements get their configuration after being reflectively instantiated with the no-arg constructor.

Author:

Marko A. Rodriguez (http://markorodriguez.com), Matthias Broecheler (me@matthiasb.com)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FaunusPathElement.MicroElement
protected static class	FaunusPathElement.Tracker

Field Summary

Fields

Modifier and Type	Field and Description
protected Configuration	configuration
protected long	pathCounter
protected FaunusPathElement.Tracker	tracker

Fields inherited from class com.thinkaurelius.titan.hadoop.FaunusElement

FILTER_DELETED_EDGES, FILTER_DELETED_PROPERTIES, id, inAdjacency, NO_ID, outAdjacency

Fields inherited from class com.thinkaurelius.titan.hadoop.LifeCycleElement

lifecycle

Constructor Summary

Constructors

Constructor and Description
FaunusPathElement(Configuration configuration, long id)
FaunusPathElement(long id)

Method Summary

Modifier and Type	Method and Description
void	addPath(List<FaunusPathElement.MicroElement> path, boolean append)
void	addPaths(List<List<FaunusPathElement.MicroElement>> paths, boolean append)
void	clearPaths()
org.apache.hadoop.conf.Configuration	getConf()
Configuration	getFaunusConf()
List<List<FaunusPathElement.MicroElement>>	getPaths()
void	getPaths(FaunusElement element, boolean append)
FaunusSchemaManager	getTypeManager()
boolean	hasPaths()
boolean	hasTrackPaths()
long	incrPath(long amount)
long	pathCount()
FaunusVertexQuery	query()
void	setConf(org.apache.hadoop.conf.Configuration hadoopConf)
void	startPath()

Methods inherited from class com.thinkaurelius.titan.hadoop.FaunusElement

addAllProperties, addRelation, compareTo, equals, getAdjustedMultiplicity, getId, getLongId, getProperty, getProperty, getProperty, getPropertyCollection, getPropertyKeys, getPropertyKeysDirect, hashCode, hasId, initializeAdjacency, isHidden, isModified, it, remove, removeProperty, removeProperty, setId, setProperty, setProperty, setProperty, setProperty, setRelation, tx

Methods inherited from class com.thinkaurelius.titan.hadoop.LifeCycleElement

getLifeCycle, isLoaded, isNew, isRemoved, setLifeCycle, updateLifeCycle

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.io.Writable

readFields, write

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface com.thinkaurelius.titan.graphdb.internal.InternalElement

getLifeCycle

Methods inherited from interface com.thinkaurelius.titan.core.TitanElement

isLoaded, isNew, isRemoved

Field Detail

tracker

protected FaunusPathElement.Tracker tracker

pathCounter

protected long pathCounter

configuration

protected Configuration configuration

Constructor Detail

FaunusPathElement

public FaunusPathElement(long id)

FaunusPathElement

public FaunusPathElement(Configuration configuration,
                         long id)

Method Detail

setConf

public void setConf(org.apache.hadoop.conf.Configuration hadoopConf)

Specified by:

setConf in interface org.apache.hadoop.conf.Configurable

getConf

public org.apache.hadoop.conf.Configuration getConf()

Specified by:

getConf in interface org.apache.hadoop.conf.Configurable

getFaunusConf

public Configuration getFaunusConf()

getTypeManager

public FaunusSchemaManager getTypeManager()

Specified by:

getTypeManager in class FaunusElement

query

public FaunusVertexQuery query()

Specified by:

query in class FaunusElement

hasTrackPaths

public boolean hasTrackPaths()

addPath

public void addPath(List<FaunusPathElement.MicroElement> path,
                    boolean append)
             throws IllegalStateException

Throws:

IllegalStateException

addPaths

public void addPaths(List<List<FaunusPathElement.MicroElement>> paths,
                     boolean append)
              throws IllegalStateException

Throws:

IllegalStateException

getPaths

public List<List<FaunusPathElement.MicroElement>> getPaths()
                                                    throws IllegalStateException

Throws:

IllegalStateException

getPaths

public void getPaths(FaunusElement element,
                     boolean append)

incrPath

public long incrPath(long amount)
              throws IllegalStateException

Throws:

IllegalStateException

hasPaths

public boolean hasPaths()

clearPaths

public void clearPaths()

pathCount

public long pathCount()

startPath

public void startPath()