TLC

java.lang.Object

dev.enola.common.context.TLC

@ThreadSafe public final class TLC extends Object

TLC is the Thread Local Context. (Also known as "Tender Loving Care".)

This is useful to hold values that are user- or request-dependent.

For things which are "global", just use a Singleton instead.

Method Summary

Modifier and Type

Method

Description

static <T> T

get(Class<T> klass)

See Context.get(java.lang.Class).

static <K extends Enum<K> & Context.Key<T>, T> T

get(K key)

See Context.get(Class).

static Context

open()

Opens a new (!) Context, "stacked" over the current one (if any).

static <T> Optional<T>

optional(Class<T> klass)

static <K extends Enum<K> & Context.Key<T>, T> Optional<T>

optional(K key)

See Context.optional(Enum).

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details
- open
  
  public static Context open()
  
  Opens a new (!) Context, "stacked" over the current one (if any).
  This is typically invoked from a try-with-resources, as the returned context must be closed again at some point; so the typical usage is: try (var ctx = TLC.open()) {.
- get
  
  public static <K extends Enum<K> & Context.Key<T>, T> T get(K key)
  
  See Context.get(Class).
  Use optional(Enum) to check if key is available in Context.
- optional
  
  public static <K extends Enum<K> & Context.Key<T>, T> Optional<T> optional(K key)
  
  See Context.optional(Enum).
- get
  
  public static <T> T get(Class<T> klass)
  
  See Context.get(java.lang.Class).
- optional
  
  public static <T> Optional<T> optional(Class<T> klass)