Struct google_datastore1::Key[][src]

pub struct Key {
    pub path: Option<Vec<PathElement>>,
    pub partition_id: Option<PartitionId>,

A unique identifier for an entity. If a key's partition ID or any of its path kinds or names are reserved/read-only, the key is reserved/read-only. A reserved/read-only key is forbidden in certain documented contexts.

This type is not used in any activity, and only used as part of another schema.


The entity path. An entity path consists of one or more elements composed of a kind and a string or numerical identifier, which identify entities. The first element identifies a root entity, the second element identifies a child of the root entity, the third element identifies a child of the second entity, and so forth. The entities identified by all prefixes of the path are called the element's ancestors.

An entity path is always fully complete: all of the entity's ancestors are required to be in the path along with the entity identifier itself. The only exception is that in some documented cases, the identifier in the last path element (for the entity) itself may be omitted. For example, the last path element of the key of Mutation.insert may have no identifier.

A path can never be empty, and a path can have at most 100 elements.

Entities are partitioned into subsets, currently identified by a project ID and namespace ID. Queries are scoped to a single partition.

Trait Implementations

impl Default for Key

Returns the "default value" for a type. Read more

impl Clone for Key

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

impl Debug for Key

Formats the value using the given formatter. Read more

impl Part for Key

Auto Trait Implementations

impl Send for Key

impl Sync for Key