Context class abstract

Constructors

Context()

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
span → Span
Get the Span attached to this Context, or an invalid, Span if no such Span exists.
no setter
spanContext → SpanContext
Get the SpanContext from this Context, or an invalid SpanContext if no such SpanContext exists.
no setter

Methods

execute<R>(R fn()) → R
Execute a function fn within this Context and return its result.
getValue<T>(ContextKey key) → T?
Returns the value from this context identified by key, or null if no such value is set.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
setValue(ContextKey key, Object value) → Context
Returns a new context created from this one with the given key/value pair set.
toString() → String
A string representation of this object.
inherited
withSpan(Span span) → Context
Returns a new Context created from this one with the given Span set.

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Static Properties

current → Context
The active context.
no setter
root → Context
The root context which all other contexts are derived from.
no setter

Static Methods

createKey(String name) → ContextKey
Returns a key to be used to read and/or write values to a context.