com.topologi.diffx.sequence
Class EventSequence

java.lang.Object
  com.topologi.diffx.sequence.EventSequence

public final class EventSequence

extends Object

A sequence of events used for the Diff-X algorithm.

This class wraps a list of DiffXEvents and provide method to access and modify the content of the list using strongly typed methods.

Version:

14 April 2005

Author:

Christophe Lauret

Nested Class Summary

class

EventSequence.EventIterator An iterator over the event elements in the sequences.

Constructor Summary

EventSequence()
Creates a new event sequence.

EventSequence(int size)
Creates a new event sequence of the specified size.

Method Summary

void	addEvent(DiffXEvent e) Adds an event to this sequence.
void	addEvent(int i, DiffXEvent e) Inserts an event to this sequence at the specified position.
void	addSequence(EventSequence seq) Adds a sequence of events to this sequence.
boolean	equals(EventSequence seq) Returns true if the specified event sequence is the same as this one.
boolean	equals(Object o) Returns true if the specified event sequence is the same as this one.
EventSequence.EventIterator	eventIterator() Returns a event iterator for this list.
void	export(PrintWriter w) Export the sequence.
DiffXEvent	getEvent(int i) Returns the event at position i.
PrefixMapping	getPrefixMapping() Returns the prefix mapping for the namespace URIs in this sequence.
int	hashCode()
void	mapPrefix(String uri, String prefix) Maps a uri to a prefix.
DiffXEvent	removeEvent(int index) Removes an event from this sequence at the specified position.
DiffXEvent	setEvent(int index, DiffXEvent e) Replaces an event of this sequence at the specified position.
int	size() The size of the sequence.
String	toString() Returns the string representation of this sequence.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

EventSequence

public EventSequence()

Creates a new event sequence.

EventSequence

public EventSequence(int size)

Creates a new event sequence of the specified size.

Parameters:

size - The size of the sequence.

Method Detail

addSequence

public void addSequence(EventSequence seq)

Adds a sequence of events to this sequence.

Parameters:

seq - The sequence of events to be added.

addEvent

public void addEvent(DiffXEvent e)

Adds an event to this sequence.

Parameters:

e - The event to be added.

addEvent

public void addEvent(int i,
                     DiffXEvent e)

Inserts an event to this sequence at the specified position.

Parameters:

i - The position of the event.

e - The event to be added.

getEvent

public DiffXEvent getEvent(int i)

Returns the event at position i.

Parameters:

i - The position of the event.

Returns:

the event at position i.

setEvent

public DiffXEvent setEvent(int index,
                           DiffXEvent e)

Replaces an event of this sequence at the specified position.

Parameters:

index - The 0-based index of the position.

e - The event to be inserted.

Returns:

The event at the previous position.

removeEvent

public DiffXEvent removeEvent(int index)

Removes an event from this sequence at the specified position.

Parameters:

index - The 0-based index of the position.

Returns:

The removed event.

size

public int size()

The size of the sequence.

Returns:

The number of events in the sequence.

eventIterator

public EventSequence.EventIterator eventIterator()

Returns a event iterator for this list.

Returns:

The event iterator for this sequence.

hashCode

public int hashCode()

See Also:

Object.hashCode()

equals

public boolean equals(EventSequence seq)

Returns true if the specified event sequence is the same as this one.

Parameters:

seq - The sequence of events to compare with this one.

Returns:

true if the specified event sequence is equal to this one; false otherwise.

equals

public boolean equals(Object o)

Returns true if the specified event sequence is the same as this one.

This methdo will redirect to the equals(EventSequence) method if the specified object is an instance of EventSequence.

Parameters:

o - The sequence of events to compare with this one.

Returns:

true if the specified event sequence is equal to this one; false otherwise.

toString

public String toString()

Returns the string representation of this sequence.

Returns:

The string representation of this sequence.

export

public void export(PrintWriter w)

Export the sequence.

Parameters:

w - The print writer receiving the SAX events.

mapPrefix

public void mapPrefix(String uri,
                      String prefix)
               throws NullPointerException

Maps a uri to a prefix.

Parameters:

uri - The namespace URI to map.

prefix - The prefix to use.

Throws:

NullPointerException - if the URI or prefix is null

See Also:

PrefixMapping.add(String, String)

getPrefixMapping

public PrefixMapping getPrefixMapping()

Returns the prefix mapping for the namespace URIs in this sequence.

Returns:

the prefix mapping for the namespace URIs in this sequence.