com.twitter.finagle.context

Context

Related Doc: package context

trait Context extends AnyRef

A context contains a number of let-delimited bindings. Bindings are indexed by type Key[A] in a typesafe manner. Later bindings shadow earlier ones.

Note that the implementation of context maintains all bindings in a linked list; context lookup requires a linear search.

Linear Supertypes
AnyRef, Any
Known Subclasses
LocalContext, MarshalledContext
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Type Members

  1. case class Bound[A](next: Env, key: Key[A], value: A) extends Env with Product with Serializable

    An environment with key bound to value; lookups for other keys are forwarded to next.

  2. case class Cleared[A](next: Env, key: Key[A]) extends Env with Product with Serializable

    An environment without key.

    An environment without key. Lookups for other keys are forwarded to next.

  3. sealed trait Env extends AnyRef

  4. abstract type Key[A]

  5. case class OrElse(left: Env, right: Env) extends Env with Product with Serializable

    Concatenate two environments with left-hand side precedence.

Value Members

  1. final def !=(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

    Definition Classes
    AnyRef → Any

  3. final def ==(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  4. object Empty extends Env

    An empty environment.

    An empty environment. No keys are present.

  5. def apply[A](key: Key[A]): A

    Retrieve the current definition of a key.

    Retrieve the current definition of a key.

    Annotations
    @throws( "If the key does not exist" )
    Exceptions thrown

    NoSuchElementException when the key is undefined in the current request-local context.

  6. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  7. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  8. def contains[A](key: Key[A]): Boolean

    Tells whether key is defined in the current request-local context.

  9. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  10. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  11. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  12. def get[A](key: Key[A]): Option[A]

    Retrieve the current definition of a key, but only if it is defined in the current request-local context.

  13. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any

  14. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  15. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  16. def let[A, B, R](key1: Key[A], value1: A, key2: Key[B], value2: B)(fn: ⇒ R): R

    Bind two keys and values in the scope of fn.

  17. def let[A, R](key: Key[A], value: A)(fn: ⇒ R): R

    Bind value to key in the scope of fn.

  18. def letClear[R](keys: Key[_]*)(fn: ⇒ R): R

    Unbind the passed-in keys, in the scope of fn.

  19. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  20. final def notify(): Unit

    Definition Classes
    AnyRef

  21. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  22. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef

  23. def toString(): String

    Definition Classes
    AnyRef → Any

  24. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  25. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  26. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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