org.exist.numbering
Class DLN

java.lang.Object
  org.exist.numbering.DLNBase
      org.exist.numbering.DLN

All Implemented Interfaces:

java.lang.Comparable

public class DLN

extends DLNBase

Represents a node id in the form of a dynamic level number (DLN). DLN's are hierarchical ids, which borrow from Dewey's decimal classification. Examples for node ids: 1, 1.1, 1.2, 1.2.1, 1.2.2, 1.3. In this case, 1 represents the root node, 1.1 is the first node on the second level, 1.2 the second, and so on.

Field Summary

Fields inherited from class org.exist.numbering.DLNBase

bitIndex, bits, BITS_PER_UNIT, PER_COMPONENT_SIZE, UNIT_SHIFT

Constructor Summary

	DLN()
protected	DLN(byte[] data, int nbits)
	DLN(DLN other)
	DLN(int id)
	DLN(int[] id)
	DLN(int units, byte[] data, int startOffset)
	DLN(VariableByteInput is)

Method Summary

DLN	getParentId()
static void	main(java.lang.String[] args)
DLN	newChild() Returns a new DLN representing the first child node of this node.
DLN	nextSibling() Returns a new DLN representing the next following sibling of this node.
void	write(VariableByteOutputStream os) Write the node id to a VariableByteOutputStream.

Methods inherited from class org.exist.numbering.DLNBase

addLevelId, bitWidth, compareTo, compareTo, debug, getLevelCount, getLevelId, getLevelIds, getUnitsRequired, incrementLevelId, lastLevelOffset, serialize, setCurrentLevelId, setLevelId, size, startsWith, toBitString, toString, units

Methods inherited from class java.lang.Object

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

Constructor Detail

DLN

public DLN()

DLN

public DLN(int[] id)

DLN

public DLN(int id)

DLN

public DLN(DLN other)

DLN

public DLN(int units,
           byte[] data,
           int startOffset)

DLN

public DLN(VariableByteInput is)
    throws java.io.IOException

DLN

protected DLN(byte[] data,
              int nbits)

Method Detail

newChild

public DLN newChild()

Returns a new DLN representing the first child node of this node.

Returns:

new child node id

nextSibling

public DLN nextSibling()

Returns a new DLN representing the next following sibling of this node.

Returns:

new sibling node id.

getParentId

public DLN getParentId()

write

public void write(VariableByteOutputStream os)
           throws java.io.IOException

Write the node id to a VariableByteOutputStream.

Parameters:

os -

Throws:

java.io.IOException

main

public static void main(java.lang.String[] args)