Package org.apache.lucene.store

Enum Class NoReuseHint

java.lang.Object
java.lang.Enum<NoReuseHint>
org.apache.lucene.store.NoReuseHint
All Implemented Interfaces:
Serializable, Comparable<NoReuseHint>, Constable, IOContext.FileOpenHint
public enum NoReuseHint extends Enum<NoReuseHint> implements IOContext.FileOpenHint
A hint that a file is not worth keeping in memory. It may be read often; what it lacks is reuse worth caching for, because its reads repeat in no pattern a cache can exploit, or because it is large enough next to the rest of the index that holding it would push out data that does benefit.

Close to ReadOnceHint, and weaker: it does not claim the file is read once, or in order, or even that a read never revisits bytes another read has touched.

  • Enum Constant Details

  • Method Details

    • values

      public static NoReuseHint[] values()
      Returns an array containing the constants of this enum class, in the order they are declared.
      Returns:
      an array containing the constants of this enum class, in the order they are declared

    • valueOf

      public static NoReuseHint valueOf(String name)
      Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (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 class has no constant with the specified name
      NullPointerException - if the argument is null