org.basex.query.item
Class DBNode

java.lang.Object
  org.basex.query.ExprInfo
      org.basex.query.expr.Expr
          org.basex.query.item.Item
              org.basex.query.item.Nod
                  org.basex.query.item.DBNode

Direct Known Subclasses:

FTItem

public class DBNode
extends Nod

Disk-based Node item.

Author:

Workgroup DBIS, University of Konstanz 2005-10, ISC License, Christian Gruen

Nested Class Summary

Nested classes/interfaces inherited from class org.basex.query.expr.Expr

Expr.Use

Field Summary

Data	data Data reference.
int	pre Pre value.
Nod	root Root node (constructor).
static Type[]	TYPES Node Types.

Fields inherited from class org.basex.query.item.Item

score, type

Constructor Summary

DBNode()
Constructor.

DBNode(Data d, int p)
Constructor.

DBNode(Data d, int p, int k)
Constructor.

DBNode(Data d, int p, Nod r, Type t)
Constructor.

Method Summary

NodeIter	anc() Returns an ancestor axis iterator.
NodeIter	attr() Returns an attribute axis iterator.
byte[]	base() Returns the database name.
NodeMore	child() Returns a child axis iterator.
String	color() Returns a color string for the expression.
DBNode	copy() Creates a new copy (clone) of the node.
NodeIter	desc() Returns a descendant axis iterator.
NodeIter	descOrSelf() Returns a descendant-or-self axis iterator.
int	diff(Nod nod) Compares two nodes for their unique order.
DBNode	finish() Returns a final node representation.
boolean	is(Nod nod) Compares two nodes for equality.
byte[]	nname() Returns the node name.
Atts	ns() Returns a namespace array.
NodeIter	par() Returns a parent axis iterator.
Nod	parent() Returns the parent node.
void	parent(Nod p) Sets the parent node.
void	plan(Serializer ser) Recursively sends the abstract syntax of this expression to the specified serializer.
QNm	qname() Returns the node name.
QNm	qname(QNm name) Returns a temporary node name.
void	serialize(Serializer ser) Serializes the item.
void	set(int p, int k) Sets the node type.
byte[]	str() Returns an atomized string.
String	toString()

Methods inherited from class org.basex.query.item.Nod

ancOrSelf, bool, dbl, dec, diff, eq, flt, foll, follSibl, id, itr, java, kind, prec, precSibl, self, uri

Methods inherited from class org.basex.query.item.Item

atomic, comp, d, duplicates, ebv, hashCode, i, iter, iter, n, name, node, removable, returned, s, score, score, size, test, u, uses

Methods inherited from class org.basex.query.expr.Expr

addText, checkCtx, checkDbl, checkItr, e, indexAccessible, indexEquivalent, remove, sameAs, v

Methods inherited from class org.basex.query.ExprInfo

info

Methods inherited from class java.lang.Object

equals, getClass, notify, notifyAll, wait, wait, wait

Field Detail

TYPES

public static final Type[] TYPES

Node Types.

data

public final Data data

Data reference.

root

public Nod root

Root node (constructor).

pre

public int pre

Pre value.

Constructor Detail

DBNode

public DBNode()

Constructor.

DBNode

public DBNode(Data d,
              int p)

Constructor.

Parameters:

d - data reference

p - pre value

DBNode

public DBNode(Data d,
              int p,
              int k)

Constructor.

Parameters:

d - data reference

p - pre value

k - node kind

DBNode

public DBNode(Data d,
              int p,
              Nod r,
              Type t)

Constructor.

Parameters:

d - data reference

p - pre value

r - parent reference

t - node type

Method Detail

set

public final void set(int p,
                      int k)

Sets the node type.

Parameters:

p - pre value

k - node kind

str

public final byte[] str()

Description copied from class: Item

Returns an atomized string.

Overrides:

str in class Item

Returns:

string representation

serialize

public final void serialize(Serializer ser)
                     throws IOException

Description copied from class: Item

Serializes the item.

Overrides:

serialize in class Item

Parameters:

ser - serializer

Throws:

IOException - I/O exception

nname

public final byte[] nname()

Description copied from class: Nod

Returns the node name.

Overrides:

nname in class Nod

Returns:

name

qname

public final QNm qname()

Description copied from class: Nod

Returns the node name.

Overrides:

qname in class Nod

Returns:

name

qname

public final QNm qname(QNm name)

Description copied from class: Nod

Returns a temporary node name.

Overrides:

qname in class Nod

Parameters:

name - temporary qname

Returns:

name

ns

public final Atts ns()

Description copied from class: Nod

Returns a namespace array.

Overrides:

ns in class Nod

Returns:

namespace array

base

public final byte[] base()

Description copied from class: Nod

Returns the database name.

Overrides:

base in class Nod

Returns:

database name

is

public final boolean is(Nod nod)

Description copied from class: Nod

Compares two nodes for equality.

Specified by:

is in class Nod

Parameters:

nod - node to be compared

Returns:

result of check

diff

public final int diff(Nod nod)

Description copied from class: Nod

Compares two nodes for their unique order.

Specified by:

diff in class Nod

Parameters:

nod - node to be compared

Returns:

0 if the nodes are equal or a positive/negative value if the node appears after/before the argument

copy

public final DBNode copy()

Description copied from class: Nod

Creates a new copy (clone) of the node.

Specified by:

copy in class Nod

Returns:

new copy

finish

public final DBNode finish()

Description copied from class: Nod

Returns a final node representation. This method should be called as soon as a node is passed on as result node.

Overrides:

finish in class Nod

Returns:

node

parent

public final Nod parent()

Description copied from class: Nod

Returns the parent node.

Specified by:

parent in class Nod

Returns:

parent node

parent

public final void parent(Nod p)

Description copied from class: Nod

Sets the parent node.

Overrides:

parent in class Nod

Parameters:

p - parent node

anc

public final NodeIter anc()

Description copied from class: Nod

Returns an ancestor axis iterator.

Overrides:

anc in class Nod

Returns:

iterator

attr

public final NodeIter attr()

Description copied from class: Nod

Returns an attribute axis iterator.

Specified by:

attr in class Nod

Returns:

iterator

child

public final NodeMore child()

Description copied from class: Nod

Returns a child axis iterator.

Specified by:

child in class Nod

Returns:

iterator

desc

public final NodeIter desc()

Description copied from class: Nod

Returns a descendant axis iterator.

Specified by:

desc in class Nod

Returns:

iterator

descOrSelf

public final NodeIter descOrSelf()

Description copied from class: Nod

Returns a descendant-or-self axis iterator.

Specified by:

descOrSelf in class Nod

Returns:

iterator

par

public final NodeIter par()

Description copied from class: Nod

Returns a parent axis iterator.

Specified by:

par in class Nod

Returns:

iterator

color

public final String color()

Description copied from class: ExprInfo

Returns a color string for the expression.

Overrides:

color in class ExprInfo

Returns:

color

plan

public final void plan(Serializer ser)
                throws IOException

Description copied from class: ExprInfo

Recursively sends the abstract syntax of this expression to the specified serializer.

Overrides:

plan in class Item

Parameters:

ser - serializer

Throws:

IOException - I/O exception

toString

public String toString()

Overrides:

toString in class Item