ff4k-core/com.yonatankarp.ff4k.property/Property

Property

interface Property<T>(source)

Represents a strongly-typed configuration property.

Properties are key-value pairs that provide a way to manage configuration settings separately from feature flags. While feature flags are typically boolean (on/off), properties can hold values of various types (String, Int, Boolean, etc.).

Use Cases

Configuration: API URLs, timeouts, connection limits
Feature Metadata: Additional context for feature flags (e.g., threshold for a rollout)
Business Logic: Pricing parameters, tax rates, localized strings

Capabilities

Type Safety: Properties are strongly typed
Fixed Values: Can constrain values to a specific set (enum-like behavior)
Immutability: Properties are immutable value objects
Serialization: Built-in support for JSON serialization

Parameters

T

The type of the property value.

Inheritors

PropertyBigDecimal

PropertyBigInteger

PropertyBoolean

PropertyInstant

PropertyLocalDate

PropertyLocalDateTime

PropertyLogLevel

AbstractPropertyMap

AbstractPropertyMultiValued

Properties

abstract val description: String?

Optional human-readable description of the property.

abstract val fixedValues: Set<T>

Set of allowed values. If not empty, the property value must be one of these values.

open val hasFixedValues: Boolean

Checks if this property has fixed values defined.

abstract val name: String

Unique name of the property.

abstract val readOnly: Boolean

Indicates whether this property is read-only. Some stores do not allow property edition.

abstract val value: T

Current value of the property.