NoMatcher
Date: 2014-12-13

org.apache.ivy.plugins.matcher

## Class NoMatcher

- java.lang.Object
- - org.apache.ivy.plugins.matcher.NoMatcher

- All Implemented Interfaces:
    Matcher

      public final class NoMatcher
      extends java.lang.Object
      implements Matcher

  A matcher that matches nothing.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static Matcher` | `INSTANCE`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `NoMatcher()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `isExact()` Return if the matcher will match *only* if the expression equals the input.
    `boolean` | `matches(java.lang.String input)` Check whether a given string is matched by this matcher.

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### INSTANCE

          public static final Matcher INSTANCE

  - ### Constructor Detail

    - #### NoMatcher

          public NoMatcher()

  - ### Method Detail

    - #### matches

          public boolean matches(java.lang.String input)

      Description copied from interface: `Matcher`
      Check whether a given string is matched by this matcher.
      Specified by:
        `matches` in interface `Matcher`
      Parameters:
        `input` - the string to be matched. Cannot be null.
      Returns:
        true if the input string is matched, false otherwise.

    - #### isExact

          public boolean isExact()

      Description copied from interface: `Matcher`
      Return if the matcher will match *only* if the expression equals the input. WARN: This is used only as a performance trick, to avoid scanning for things when you already know exactly what you want. In the install task where it used it avoid scanning the repository to list all modules to find that only one matches, and that it has the name requested.
      Specified by:
        `isExact` in interface `Matcher`
      Returns:
        true if the matcher only matches when the expression is equals to the input, false otherwise.