org.basex.data
Class Nodes

java.lang.Object
  org.basex.data.Nodes

All Implemented Interfaces:

Result

public final class Nodes
extends java.lang.Object
implements Result

This is a container for context nodes. Instances of this class are stored in the Context class to reference the currently used nodes.

Author:

Workgroup DBIS, University of Konstanz 2005-07, ISC License, Christian Gruen

Field Summary

Data	data Root Node.
int[]	pre Pre values container.
int	size Number of stored nodes.

Constructor Summary

Nodes(Data d)
Node Set constructor.

Nodes(int[] n, Data d)
Node Set constructor.

Nodes(int n, Data d)
Node Set constructor.

Method Summary

Nodes	add(int p) The specified pre value is added to or removed from the context set.
Nodes	copy() Returns a copy of the node set.
int	find(int p) Returns the position of the specified node or the negative value - 1 of the position where it should have been found.
boolean	sameAs(Result v) Compares values for equality.
void	serialize(PrintOutput out, boolean valid) Serializes the stored data to the specified output stream.
void	serialize(ResultReader rr) Serializes the stored data to the specified reader.
int	size() Number of values, stored in the result instance.
Nodes	toggle(int p) The specified pre value is added to or removed from the context set.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

data

public Data data

Root Node.

pre

public int[] pre

Pre values container.

size

public int size

Number of stored nodes.

Constructor Detail

Nodes

public Nodes(Data d)

Node Set constructor.

Parameters:

d - data reference

Nodes

public Nodes(int[] n,
             Data d)

Node Set constructor.

Parameters:

n - node set

d - data reference

Nodes

public Nodes(int n,
             Data d)

Node Set constructor.

Parameters:

n - node set

d - data reference

Method Detail

add

public Nodes add(int p)

The specified pre value is added to or removed from the context set.

Parameters:

p - pre value

Returns:

self reference

copy

public Nodes copy()

Returns a copy of the node set.

Returns:

copy

find

public int find(int p)

Returns the position of the specified node or the negative value - 1 of the position where it should have been found.

Parameters:

p - pre value

Returns:

true if the node was found

sameAs

public boolean sameAs(Result v)

Compares values for equality.

Specified by:

sameAs in interface Result

Parameters:

v - value to be compared

Returns:

true if values are equal

serialize

public void serialize(PrintOutput out,
                      boolean valid)
               throws java.io.IOException

Serializes the stored data to the specified output stream.

Specified by:

serialize in interface Result

Parameters:

out - output stream

valid - well-formed output

Throws:

java.io.IOException - in case of problems with the PrintOutput

serialize

public void serialize(ResultReader rr)
               throws org.xml.sax.SAXException

Serializes the stored data to the specified reader.

Specified by:

serialize in interface Result

Parameters:

rr - default handler

Throws:

org.xml.sax.SAXException - in case of problems with the PrintOutput

size

public int size()

Number of values, stored in the result instance.

Specified by:

size in interface Result

Returns:

number of values

toggle

public Nodes toggle(int p)

The specified pre value is added to or removed from the context set.

Parameters:

p - pre value

Returns:

self reference

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object