com.topologi.diffx.event.impl

Class SpaceEvent

java.lang.Object

com.topologi.diffx.event.impl.CharactersEventBase

com.topologi.diffx.event.impl.SpaceEvent

All Implemented Interfaces:

DiffXEvent, TextEvent, XMLFormattable, XMLWritable

public final class SpaceEvent
extends CharactersEventBase
implements TextEvent

A particular type of event reserved for white spaces.

Version:

27 March 2010

Author:

Christophe Lauret

Field Summary

Fields

Modifier and Type	Field and Description
static SpaceEvent	DOUBLE_WHITESPACE A static instance for the double white spaces.
static SpaceEvent	NEW_LINE A static instance for the new lines.
static SpaceEvent	SINGLE_WHITESPACE A static instance for the single white spaces.
static SpaceEvent	TAB A static instance for tabs.

Constructor Summary

Constructors

Constructor and Description
SpaceEvent(CharSequence w) Creates a new word event.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object o) Invokes the DiffXEvent.equals(DiffXEvent) method if the specified object if not null and is an instance of DiffXEvent.
static SpaceEvent	getInstance(char c) Returns the white space event corresponding to the given string.
static SpaceEvent	getInstance(CharSequence space) Returns the white space event corresponding to the given string.
int	getWeight() Returns the weight of this event.
void	setWeight(int weight) Sets the weight of this event.
String	toString()
String	toXML() Returns a xml representation of the object of the implementing class.

Methods inherited from class com.topologi.diffx.event.impl.CharactersEventBase

equals, getCharacters, hashCode, toXML, toXML

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.topologi.diffx.event.TextEvent

getCharacters

Methods inherited from interface com.topologi.diffx.event.DiffXEvent

equals, getWeight, setWeight

Methods inherited from interface com.topologi.diffx.xml.XMLWritable

toXML

Methods inherited from interface com.topologi.diffx.xml.XMLFormattable

toXML, toXML

Field Detail

SINGLE_WHITESPACE

public static final SpaceEvent SINGLE_WHITESPACE

A static instance for the single white spaces.

Use this constant instead of creating new instances

DOUBLE_WHITESPACE

public static final SpaceEvent DOUBLE_WHITESPACE

A static instance for the double white spaces.

Use this constant instead of creating new instances

NEW_LINE

public static final SpaceEvent NEW_LINE

A static instance for the new lines.

Use this constant instead of creating new instances

TAB

public static final SpaceEvent TAB

A static instance for tabs.

Use this constant instead of creating new instances

Constructor Detail

SpaceEvent

public SpaceEvent(CharSequence w)
           throws NullPointerException

Creates a new word event.

Parameters:

w - The word as a string.

Throws:

NullPointerException - If the given String is null.

Method Detail

toString

public String toString()

Overrides:

toString in class Object

getInstance

public static SpaceEvent getInstance(CharSequence space)

Returns the white space event corresponding to the given string.

Parameters:

space - The string for the white space event.

Returns:

A readable string.

getInstance

public static SpaceEvent getInstance(char c)

Returns the white space event corresponding to the given string.

Parameters:

c - The string for the white space event.

Returns:

A readable string.

equals

public final boolean equals(Object o)

Invokes the DiffXEvent.equals(DiffXEvent) method if the specified object if not null and is an instance of DiffXEvent.

Overrides:

equals in class Object

Parameters:

o - The object to compare.

Returns:

true if the specified object is equal; false otherwise.

toXML

public String toXML()

Description copied from interface: XMLFormattable

Returns a xml representation of the object of the implementing class.

Most implementation should use the following code to ensure consistent data with the other toXML method:

return this.toXML(new StringBuffer()).toString();

Specified by:

toXML in interface XMLFormattable

Returns:

a XML representation of the object of the implementing class.

getWeight

public int getWeight()

Description copied from interface: DiffXEvent

Returns the weight of this event.

The default weight should be 1.

Specified by:

getWeight in interface DiffXEvent

Returns:

The weight of this event.

setWeight

public void setWeight(int weight)

Description copied from interface: DiffXEvent

Sets the weight of this event.

This method is intended for use by algorithms, optimisers and loaders in order to adjust the importance of an event.

Specified by:

setWeight in interface DiffXEvent

Parameters:

weight - The weight of this event.