net.sf.eBus.util.regex

Class CharacterSet

java.lang.Object

net.sf.eBus.util.regex.Component

net.sf.eBus.util.regex.CharacterSet

All Implemented Interfaces:

Serializable

public final class CharacterSet
extends Component

This regular expression component matches only those characters listed in its set. This pattern element has an associated minimum and maximum range. The component must match at least the minimum count and up to the maximum count (inclusive).

This set may also be negated which means that it will match any character except those listed in its set.

Author:

Charles Rapp

See Also:

Serialized Form

Field Summary

Fields inherited from class net.sf.eBus.util.regex.Component

_index, _maximumSize, _minimumSize, _type, ANY_CHAR, CHARACTER_SET, LITERAL, NO_MAX_MATCH_LIMIT

Method Summary

Modifier and Type	Method and Description
boolean	equalTo(char c) Returns true if this component is equal to the character c; returns false otherwise.
boolean	greaterThan(char c) Returns true if this component is greater than the character c; returns false otherwise.
boolean	isNegated() Returns true if this character is negated (^) and false otherwise.
boolean	lessThan(char c) Returns true if this component is less than the character c; returns false otherwise.
String	toString() Returns a textual representation of a character set.

Methods inherited from class net.sf.eBus.util.regex.Component

appendSize, index, maximumSize, minimumSize, type

Methods inherited from class java.lang.Object

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

Method Detail

lessThan

public boolean lessThan(char c)

Returns true if this component is less than the character c; returns false otherwise. A character set is less than a specific character if the set's smallest character is less than c.

Specified by:

lessThan in class Component

Parameters:

c - Test against this character.

Returns:

true if this component is less than the character c; returns false otherwise.

equalTo

public boolean equalTo(char c)

Returns true if this component is equal to the character c; returns false otherwise. A character set is equal to a specific characer if c is in the set.

Specified by:

equalTo in class Component

Parameters:

c - Test against this character.

Returns:

true if this component is equal to the character c; returns false otherwise.

greaterThan

public boolean greaterThan(char c)

Returns true if this component is greater than the character c; returns false otherwise. A character set is greater than a specified character if the set's maximum character is greater than c.

Specified by:

greaterThan in class Component

Parameters:

c - Test against this character.

Returns:

true if this component is greater than the character c; returns false otherwise.

isNegated

public boolean isNegated()

Returns true if this character is negated (^) and false otherwise.

Returns:

true if this character is negated (^) and false otherwise.

toString

public String toString()

Returns a textual representation of a character set.

Overrides:

toString in class Object

Returns:

a textual representation of a character set.