Struct Document 

pub struct Document {
    pub id: String,
    pub content: Cow<'static, str>,
    pub metadata: Metadata,
    pub content_hash: Option<String>,
    pub created_at: DateTime<Utc>,
}

Core document type optimized for Rust patterns

Uses Cow<str> for flexible string handling:

• Borrowed strings when possible (zero-copy)
• Owned strings when necessary (after processing)

Fields

id: String

Unique document identifier

content: Cow<'static, str>

Document content - uses Cow for efficient string handling

metadata: Metadata

Document metadata

content_hash: Option<String>

Content hash for deduplication

created_at: DateTime<Utc>

Document creation timestamp

Implementations

impl Document

pub fn new(content: impl Into<Cow<'static, str>>) -> Self

Create a new document with generated ID

pub fn with_id( id: impl Into<String>, content: impl Into<Cow<'static, str>>, ) -> Self

Create document with specific ID

pub fn with_metadata(self, key: impl Into<String>, value: Value) -> Self

Add metadata using builder pattern

pub fn with_metadata_map(self, metadata: Metadata) -> Self

Add multiple metadata entries

pub fn with_content_hash(self) -> Self

Generate content hash for deduplication

pub fn content_str(&self) -> &str

Get content as string slice

pub fn content_length(&self) -> usize

Get content length in characters

pub fn is_empty(&self) -> bool

Check if document is empty

Trait Implementations

impl Clone for Document

fn clone(&self) -> Document

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Document

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Document

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Document

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

where __S: Serializer,

Serialize this value into the given Serde serializer.