OptionalMetaPattern (Wicket Util 9.0.0 API)

java.lang.Object
- org.apache.wicket.util.parse.metapattern.MetaPattern
- - org.apache.wicket.util.parse.metapattern.OptionalMetaPattern

All Implemented Interfaces:

Serializable, IClusterable
```
public final class OptionalMetaPattern
extends MetaPattern
```
Makes any MetaPattern optional by enclosing the pattern in an optionality expression. The expression will be something equivalent to "(?:<pattern>)?".

Author:

Jonathan Locke

See Also:

Serialized Form

Field Summary
- Fields inherited from class org.apache.wicket.util.parse.metapattern.MetaPattern
  AMPERSAND, ANYTHING, ANYTHING_NON_EMPTY, AT_SIGN, BACKSLASH, COLON, COMMA, DASH, DIGIT, DIGITS, DOLLAR_SIGN, DOT, DOUBLE_QUOTED_STRING, EQUALS, EXCLAMATION_POINT, FLOATING_POINT_NUMBER, HEXADECIMAL_DIGIT, HEXADECIMAL_DIGITS, INTEGER, LEFT_CURLY, LEFT_PAREN, LEFT_SQUARE, MINUS, NON_WORD, OPTIONAL_STRING, OPTIONAL_WHITESPACE, OPTIONAL_WORD, PERCENT, PERL_INTERPOLATION, PIPE, PLUS, POSITIVE_INTEGER, POUND_SIGN, RIGHT_CURLY, RIGHT_PAREN, RIGHT_SQUARE, SEMICOLON, SLASH, STAR, STRING, TILDE, UNDERSCORE, VARIABLE_NAME, WHITESPACE, WORD, XML_ATTRIBUTE_NAME, XML_ELEMENT_NAME

Constructor Summary

Constructors
Constructor	Description
`OptionalMetaPattern(String pattern)`	Constructor
`OptionalMetaPattern(List<MetaPattern> patterns)`	Constructor
`OptionalMetaPattern(MetaPattern pattern)`	Constructor
`OptionalMetaPattern(MetaPattern[] patterns)`	Constructor

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

String toString()
Converts this MetaPattern to a String.
- Methods inherited from class org.apache.wicket.util.parse.metapattern.MetaPattern
  matcher, matcher, pattern, pattern
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - OptionalMetaPattern
```
public OptionalMetaPattern(String pattern)
```
    Constructor
    
    Parameters:
    
    pattern -
  - OptionalMetaPattern
```
public OptionalMetaPattern(MetaPattern pattern)
```
    Constructor
    
    Parameters:
    
    pattern - MetaPattern to make optional
  - OptionalMetaPattern
```
public OptionalMetaPattern(List<MetaPattern> patterns)
```
    Constructor
    
    Parameters:
    
    patterns -
  - OptionalMetaPattern
```
public OptionalMetaPattern(MetaPattern[] patterns)
```
    Constructor
    
    Parameters:
    
    patterns -
- Method Detail
  - toString
```
public String toString()
```
    Description copied from class: MetaPattern
    
    Converts this MetaPattern to a String.
    
    Overrides:
    
    toString in class MetaPattern
    
    Returns:
    
    String representation of this pattern
    
    See Also:
    
    Object.toString()