Struct ApplicationData 

pub struct ApplicationData {
    pub identifier: String,
    pub content: String,
    pub extra_tags: Vec<Tag>,
}

Typed bundle for a NIP-78 kind: 30078 event.

The d tag (= Self::identifier) is the only required wire element; everything else is opaque payload that the producing app interprets however it likes.

Fields

identifier: String

d-tag value. Spec recommends a reverse-DNS or vendor-prefixed identifier such as com.example.todoapp so unrelated apps do not collide on the same (pubkey, 30078, d) coordinate.

content: String

Free-form .content. Often JSON, but any string works.

extra_tags: Vec<Tag>

Any additional tags the app stamped on the event. They are preserved on a Self::from_event round-trip so consumers never silently lose data.

Implementations

impl ApplicationData

pub fn new(identifier: impl Into<String>) -> Self

Construct an empty bundle bound to identifier.

pub fn content(self, content: impl Into<String>) -> Self

Replace the content blob.

pub fn tag(self, tag: Tag) -> Self

Append an app-defined tag.

d-tags submitted here are silently dropped — the addressable identifier is owned by Self::identifier and the builder pins exactly one d tag at the head of the event.

pub fn tags<I>(self, tags: I) -> Self

where I: IntoIterator<Item = Tag>,

Append several app-defined tags.

pub fn from_event(event: &Event) -> Result<Self, ApplicationDataError>

Parse a kind: 30078 event back into a typed bundle.

Errors

• ApplicationDataError::WrongKind for any other kind.
• ApplicationDataError::MissingIdentifier when no d tag is present (the event would not be addressable without one).

Trait Implementations

impl Clone for ApplicationData

fn clone(&self) -> ApplicationData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ApplicationData

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

Formats the value using the given formatter.

impl Default for ApplicationData

fn default() -> ApplicationData

Returns the “default value” for a type.

impl Eq for ApplicationData

impl PartialEq for ApplicationData

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ApplicationData