Package org.apache.lucene.util.automaton

## Enum RegExp.Kind

- java.lang.Object
- - java.lang.Enum<RegExp.Kind>
  - - org.apache.lucene.util.automaton.RegExp.Kind

- All Implemented Interfaces:
    `Serializable`, `Comparable<RegExp.Kind>`
  Enclosing class:
    RegExp

      public static enum RegExp.Kind
      extends Enum<RegExp.Kind>

  The type of expression represented by a RegExp node.

- - ### Enum Constant Summary

    Enum Constants
    Enum Constant | Description
    --- | ---
    `REGEXP_ANYCHAR` | Any Character allowed
    `REGEXP_ANYSTRING` | Any string allowed
    `REGEXP_AUTOMATON` | An Automaton expression
    `REGEXP_CHAR` | A Character
    `REGEXP_CHAR_RANGE` | A Character range
    `REGEXP_COMPLEMENT` | The complement of an expression
    `REGEXP_CONCATENATION` | A sequence of two expressions
    `REGEXP_EMPTY` | An empty expression
    `REGEXP_INTERSECTION` | The intersection of two expressions
    `REGEXP_INTERVAL` | An Interval expression
    `REGEXP_OPTIONAL` | An optional expression
    `REGEXP_PRE_CLASS` | An expression for a pre-defined class e.g.
    `REGEXP_REPEAT` | An expression that repeats
    `REGEXP_REPEAT_MIN` | An expression that repeats a minimum number of times
    `REGEXP_REPEAT_MINMAX` | An expression that repeats a minimum and maximum number of times
    `REGEXP_STRING` | A string expression
    `REGEXP_UNION` | The union of two expressions

  - ### Method Summary

    All Methods Static Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `static RegExp.Kind` | `valueOf​(String name)` | Returns the enum constant of this type with the specified name.
    `static RegExp.Kind[]` | `values()` | Returns an array containing the constants of this enum type, in the order they are declared.

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

      `clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf`

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

      `getClass, notify, notifyAll, wait, wait, wait`

- - ### Enum Constant Detail

    - #### REGEXP_UNION

          public static final RegExp.Kind REGEXP_UNION

      The union of two expressions

    - #### REGEXP_CONCATENATION

          public static final RegExp.Kind REGEXP_CONCATENATION

      A sequence of two expressions

    - #### REGEXP_INTERSECTION

          public static final RegExp.Kind REGEXP_INTERSECTION

      The intersection of two expressions

    - #### REGEXP_OPTIONAL

          public static final RegExp.Kind REGEXP_OPTIONAL

      An optional expression

    - #### REGEXP_REPEAT

          public static final RegExp.Kind REGEXP_REPEAT

      An expression that repeats

    - #### REGEXP_REPEAT_MIN

          public static final RegExp.Kind REGEXP_REPEAT_MIN

      An expression that repeats a minimum number of times

    - #### REGEXP_REPEAT_MINMAX

          public static final RegExp.Kind REGEXP_REPEAT_MINMAX

      An expression that repeats a minimum and maximum number of times

    - #### REGEXP_COMPLEMENT

          public static final RegExp.Kind REGEXP_COMPLEMENT

      The complement of an expression

    - #### REGEXP_CHAR

          public static final RegExp.Kind REGEXP_CHAR

      A Character

    - #### REGEXP_CHAR_RANGE

          public static final RegExp.Kind REGEXP_CHAR_RANGE

      A Character range

    - #### REGEXP_ANYCHAR

          public static final RegExp.Kind REGEXP_ANYCHAR

      Any Character allowed

    - #### REGEXP_EMPTY

          public static final RegExp.Kind REGEXP_EMPTY

      An empty expression

    - #### REGEXP_STRING

          public static final RegExp.Kind REGEXP_STRING

      A string expression

    - #### REGEXP_ANYSTRING

          public static final RegExp.Kind REGEXP_ANYSTRING

      Any string allowed

    - #### REGEXP_AUTOMATON

          public static final RegExp.Kind REGEXP_AUTOMATON

      An Automaton expression

    - #### REGEXP_INTERVAL

          public static final RegExp.Kind REGEXP_INTERVAL

      An Interval expression

    - #### REGEXP_PRE_CLASS

          public static final RegExp.Kind REGEXP_PRE_CLASS

      An expression for a pre-defined class e.g. \w

  - ### Method Detail

    - #### values

          public static RegExp.Kind[] values()

      Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

          for (RegExp.Kind c : RegExp.Kind.values())
              System.out.println(c);

      Returns:
        an array containing the constants of this enum type, in the order they are declared

    - #### valueOf

          public static RegExp.Kind valueOf​(String name)

      Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
      Parameters:
        `name` - the name of the enum constant to be returned.
      Returns:
        the enum constant with the specified name
      Throws:
        `IllegalArgumentException` - if this enum type has no constant with the specified name
        `NullPointerException` - if the argument is null