LogAttributes class final

Extra attributes of an entry.

Attributes of an entry created in this process hold the original values. Attributes read from a store (LogAttributes.fromEncoded) hold LogValue and are converted to the field's type on read via get. So a store does not need to know the app's fields, and an entry equals the original after a save and read.

Annotations

• @immutable

Constructors

LogAttributes(Iterable<LogAttribute<Object>> attributes)

For a repeated field the last value wins.

LogAttributes.fromEncoded(Map<String, LogValue> encoded)

Attributes from the stored form (encoded): field name and its LogValue, as returned by a store or produced by LogAttributes.encoded.

Properties

encoded → Map<String, LogValue>

Attributes in store form: field name and LogValue.

late, final

hashCode → int

The hash code for this object.

no setter, override

isEmpty → bool

no setter

names → Iterable<String>

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

contains(LogField<Object> field) → bool

get<T extends Object>(LogField<T> field) → T?

The attribute's value, or null if absent.

hasValue(LogAttribute<Object> attribute) → bool

Whether attribute attribute is present with the same value. Compares the encoded value (LogValue), so the result is the same for entries created in-process and read from a store.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

withAll(Iterable<LogAttribute<Object>> attributes) → LogAttributes

Copy with attributes added to the existing ones; for a repeated field the new value wins. Existing attributes are kept as is, including those read from a store. For enriching an entry in a processor: entry.copyWith(attributes: entry.attributes.withAll([buildVersion('1.2.0')])). To let an existing value take precedence, do not add it again: withAll([if (!entry.attributes.contains(userId)) userId(id)]).

Operators

operator ==(Object other) → bool

The equality operator.

override

Static Properties

empty → LogAttributes

final