org.openanzo.common.rdb.query
Class BlankNode

java.lang.Object
  org.openanzo.common.rdb.query.BlankNode

All Implemented Interfaces:

java.lang.Comparable<TriplePatternComponent>, IRdbTerm, IBlankTerm, RDFTerm, TriplePatternComponent

public class BlankNode
extends java.lang.Object
implements IRdbTerm, IBlankTerm, java.lang.Comparable<TriplePatternComponent>

BlankNode Term for Anzo Glitter mapping

Author:

Matthew Roy ( mroy@cambridgesemantics.com )

Constructor Summary

BlankNode(org.openrdf.model.BNode value)
Create a new BlankNode for the given Anzo BNode

BlankNode(CompositeNodeLayout nodeLayout, long id)
Create a new BlankNode for the given ID

Method Summary

int	compareTo(TriplePatternComponent o) Compares to TriplePatternComponents for ordering.
boolean	equals(java.lang.Object other)
long	getId() Get the ID of this node in the database
org.openrdf.model.Value	getValue() Get the Value representation of this term
void	populateData() Lookup the BNodes ID in the database
java.lang.String	toString()

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

BlankNode

public BlankNode(org.openrdf.model.BNode value)

Create a new BlankNode for the given Anzo BNode

Parameters:

value - Anzo BNode value

BlankNode

public BlankNode(CompositeNodeLayout nodeLayout,
                 long id)

Create a new BlankNode for the given ID

Parameters:

nodeLayout - layout where value is stored

id - ID of value in DB

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object other)

Specified by:

equals in interface TriplePatternComponent

Overrides:

equals in class java.lang.Object

getId

public long getId()

Description copied from interface: IRdbTerm

Get the ID of this node in the database

Specified by:

getId in interface IRdbTerm

Returns:

the ID of this node in the database

populateData

public void populateData()

Lookup the BNodes ID in the database

getValue

public org.openrdf.model.Value getValue()

Description copied from interface: IRdbTerm

Get the Value representation of this term

Specified by:

getValue in interface IRdbTerm

Returns:

the Value representation of this term

compareTo

public int compareTo(TriplePatternComponent o)

Description copied from interface: TriplePatternComponent

Compares to TriplePatternComponents for ordering.

Specified by:

compareTo in interface java.lang.Comparable<TriplePatternComponent>

Specified by:

compareTo in interface TriplePatternComponent

Returns:

-1 if this comes before other; 0 if TriplePatternComponent.equals(Object) is true, and 1 otherwise.