Struct DataTypeMetadataInfo 

#[non_exhaustive]
pub struct DataTypeMetadataInfo {
    pub namespaces: Vec<String>,
    pub supports_vendor_namespaces: bool,
    pub supports_private: bool,
    pub max_depth: Option<u64>,
}

Per-data-type metadata capability advertisement (draft-ietf-jmap-metadata-04 §1.2.1).

Appears as the value in the dataTypes map within the account-level urn:ietf:params:jmap:metadata capability object. A type that does not appear in dataTypes does not gain the metadata or privateMetadata properties in that account.

Wire example (from §6.1)

{
  "namespaces": ["photography"],
  "supportsVendorNamespaces": false,
  "supportsPrivate": false,
  "maxDepth": 3
}

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

namespaces: Vec<String>

IANA-registered metadata namespace names supported on this data type (§1.2.1). Each value is a registered name (lowercase US-ASCII letters, digits, hyphens, underscores — no dot). Vendor domain-name namespaces MUST NOT appear in this list; their support is signalled by supports_vendor_namespaces.

supports_vendor_namespaces: bool

Whether the server accepts vendor (domain-name) namespaces on this data type (§1.2.1). Default false.

supports_private: bool

Whether this account supports per-user privateMetadata on this data type (§1.2.1). Default false.

When false, the privateMetadata property MUST be absent from response objects of this type, all privateMetadata* filter conditions MUST be rejected with unsupportedFilter, and any /set targeting privateMetadata MUST be rejected with invalidProperties.

max_depth: Option<u64>

Maximum depth of a namespace value (§1.2.1, §2.1). null means no server-enforced limit; otherwise draft-ietf-jmap-metadata-04 §1.2.1 says “the value MUST be at least 1.”

Per -04 §2.1, a scalar has depth 0, an array has the maximum depth of its elements (0 if empty), and an object has depth 1 plus the maximum depth of its member values (1 if empty). So depth 1 allows a flat namespace object and depth 2 one level of nested objects.

Trait Implementations

impl Clone for DataTypeMetadataInfo

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DataTypeMetadataInfo

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DataTypeMetadataInfo

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for DataTypeMetadataInfo

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for DataTypeMetadataInfo

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for DataTypeMetadataInfo