SchemaConstraintNode class

The ConstraintNode type is provided to support usecases in which a node in a structured data graph is described with properties which appear to describe a single entity, but are being used in a situation where they serve a more abstract purpose A [ConstraintNode] can be described using [constraintProperty] and [numConstraints] These constraint properties can serve a variety of purposes, and their values may sometimes be understood to indicate sets of possible values rather than single, exact and specific values. See https://schema.org/ConstraintNode

Constructors

SchemaConstraintNode({dynamic constraintProperty, int? numConstraints, String? additionalType, String? alternateName, dynamic description, String? disambiguatingDescription, dynamic identifier, dynamic image, dynamic mainEntityOfPage, String? name, SchemaAction? potentialAction, String? sameAs, dynamic subjectOf, String? url})
Create a new instance of SchemaConstraintNode

Properties

additionalType ↔ String?
//schema.org/docs/styleguide.html">style guide. Supported types: String, String
getter/setter pair
alternateName ↔ String?
An alias for the item.
getter/setter pair
constraintProperty ↔ dynamic
Indicates a property used as a constraint For example, in the definition of a [StatisticalVariable] The value is a property, either from within Schema.org or from other compatible (e.g RDF) systems such as DataCommons.org or Wikidata.org Supported types: Property, String
getter/setter pair
description ↔ dynamic
A description of the item. Supported types: String, TextObject
getter/setter pair
disambiguatingDescription ↔ String?
A sub property of description A short description of the item used to disambiguate from other, similar items Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.
getter/setter pair
hashCode → int
The hash code for this object.
no setterinherited
identifier ↔ dynamic
The identifier property represents any kind of identifier for any kind of [Thing], such as ISBNs, GTIN codes, UUIDs etc Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links See background notes for more details Supported types: PropertyValue, String, String
getter/setter pair
image ↔ dynamic
An image of the item This can be a [URL] or a fully described [ImageObject]. Supported types: ImageObject, String
getter/setter pair
mainEntityOfPage ↔ dynamic
Indicates a page (or other CreativeWork) for which this thing is the main entity being described See background notes for details. Supported types: CreativeWork, String
getter/setter pair
name ↔ String?
The name of the item.
getter/setter pair
numConstraints ↔ int?
Indicates the number of constraints property values defined for a particular [ConstraintNode] such as [StatisticalVariable] This helps applications understand if they have access to a sufficiently complete description of a [StatisticalVariable] or other construct that is defined using properties on template-style nodes.
getter/setter pair
potentialAction ↔ SchemaAction?
Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.
getter/setter pair
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
sameAs ↔ String?
URL of a reference Web page that unambiguously indicates the item's identity E.g the URL of the item's Wikipedia page, Wikidata entry, or official website.
getter/setter pair
subjectOf ↔ dynamic
A CreativeWork or Event about this Thing. Supported types: CreativeWork, Event
getter/setter pair
url ↔ String?
URL of the item.
getter/setter pair

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toJsonLd() → Map<String, dynamic>
Serialize SchemaConstraintNode to JSON-LD
toString() → String
A string representation of this object.
inherited

Operators

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