Module org.apache.jena.tdb

Package org.apache.jena.tdb1.lib

Class NodeLib

java.lang.Object

org.apache.jena.tdb1.lib.NodeLib

public class NodeLib
extends Object

Constructor Summary

Constructors

Constructor	Description
NodeLib()

Method Summary

Modifier and Type	Method	Description
static org.apache.jena.graph.Node	decode(ByteBuffer bb)	Decode a node - it is better to use fetchDecode which may avoid an additional copy in getting the node from the ObjectFile.
static ByteBuffer	encode(org.apache.jena.graph.Node node)	Encode a node - it is better to use encodeStore which may avoid an additional copy in getting the node into the ObjectFile and may avoid short-term byte buffer allocation.
static long	encodeStore(org.apache.jena.graph.Node node, ObjectFile file)	Encode and write a Node to the ObjectFile.
static long	encodeStore(org.apache.jena.graph.Node node, ObjectFile file, ByteBuffer bb)	Encode and write a Node to the ObjectFile.
static org.apache.jena.graph.Node	fetchDecode(long id, ObjectFile file)	Read and decode a Node from the ObjectFile.
static NodeId	getNodeId(Record r, int idx)
static Hash	hash(org.apache.jena.graph.Node n)
static Iterator<org.apache.jena.graph.Node>	nodes(NodeTable nodeTable, Iterator<NodeId> iter)
static void	setHash(Hash h, org.apache.jena.graph.Node n)
static org.apache.jena.graph.Node	termOrAny(org.apache.jena.graph.Node node)

Methods inherited from class java.lang.Object

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

Constructor Details

NodeLib

public NodeLib()

Method Details

encodeStore

public static long encodeStore(org.apache.jena.graph.Node node,
 ObjectFile file)

Encode and write a Node to the ObjectFile. Returns the location, suitable for use with fetchDecode(long, org.apache.jena.tdb1.base.objectfile.ObjectFile).

encodeStore

public static long encodeStore(org.apache.jena.graph.Node node,
 ObjectFile file,
 ByteBuffer bb)

Encode and write a Node to the ObjectFile. Uses the given ByteBuffer for encoding space if possible. Returns the location, suitable for use with fetchDecode(long, org.apache.jena.tdb1.base.objectfile.ObjectFile).

fetchDecode

public static org.apache.jena.graph.Node fetchDecode(long id,
 ObjectFile file)

Read and decode a Node from the ObjectFile. The id must have originally been generated by encodeStore(org.apache.jena.graph.Node, org.apache.jena.tdb1.base.objectfile.ObjectFile).

encode

public static ByteBuffer encode(org.apache.jena.graph.Node node)

Encode a node - it is better to use encodeStore which may avoid an additional copy in getting the node into the ObjectFile and may avoid short-term byte buffer allocation.

decode

public static org.apache.jena.graph.Node decode(ByteBuffer bb)

Decode a node - it is better to use fetchDecode which may avoid an additional copy in getting the node from the ObjectFile.

hash

public static Hash hash(org.apache.jena.graph.Node n)

setHash

public static void setHash(Hash h,
 org.apache.jena.graph.Node n)

getNodeId

public static NodeId getNodeId(Record r,
 int idx)

termOrAny

public static org.apache.jena.graph.Node termOrAny(org.apache.jena.graph.Node node)

nodes

public static Iterator<org.apache.jena.graph.Node> nodes(NodeTable nodeTable,
 Iterator<NodeId> iter)