FieldQuery class

Represents a the field filter parameter in a query.

Only the selected fields will be included in the returned json. This is a very useful feature to reduce internet traffic and increase the speed of a query if only party of an entry is relevant.

From the Ditto-API:

Selectable fields:

• thingId

• policyId

• _policy: Specifically selects the policy of the Thing. (The policy is not contained in the returned JSON per default.)

• attributes: Supports selecting arbitrary sub-fields by using a comma separated list (like attributes/ownedBy/ or attributes/name)

• definition

• features: Supports selecting arbitrary fields in features similar to attributes (see also Features documentation for more details)

• _namespace: Specifically selects the namespace also contained in the thingId

• _revision: Specifically selects the revision of the Thing. The revision is a counter which is incremented on each modification of a Thing.

• _modified: Specifically selects the modified timestamp of the Thing in ISO-8601 UTC format. The timestamp is set on each modification of a Thing.

Constructors

FieldQuery(List<String> fields)

Creates a new FieldQuery with the given fields.

Properties

fields ↔ List<String>

The path to the specified fields which wild be included in the response.

getter/setter pair

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

generateString() → String

Returns the stored information in this QueryParam ready to use in a request.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited