Struct DatasetDescriptor 

pub struct DatasetDescriptor {
    pub name: String,
    pub kind: String,
    pub schema: Option<Value>,
    pub estimated_rows: Option<u64>,
    pub config_patch: Value,
}

One dataset discovered behind a source’s connection.

Fields

name: String

Human-readable dataset identity — a qualified table name (public.orders), a collection, an index, or an object-key prefix.

kind: String

What kind of dataset this is: table, collection, index, prefix, or object. Informational (rendered in output); the selection mechanics live entirely in config_patch.

schema: Option<Value>

The dataset’s column shape as an infer_schema-shaped object ({"type":"object","properties":{…}}), or None when the source cannot cheaply introspect it (object stores, schemaless collections with no sample).

estimated_rows: Option<u64>

Approximate row/object count when the catalog exposes one cheaply (e.g. pg_class.reltuples). Never computed via a full scan.

config_patch: Value

Partial source-config override selecting exactly this dataset — deep-merged over the connection config by a matrix row (e.g. {"query": "SELECT * FROM \"public\".\"orders\""} for a SQL source, {"collection": "orders"} for MongoDB, {"prefix": "raw/orders/"} for an object store). Must never contain credentials.

Implementations

impl DatasetDescriptor

pub fn new( name: impl Into<String>, kind: impl Into<String>, config_patch: Value, ) -> Self

Construct a descriptor with no schema / row estimate.

pub fn with_schema(self, schema: Value) -> Self

Attach an inferred/introspected schema.

pub fn with_estimated_rows(self, rows: u64) -> Self

Attach a catalog-provided row estimate.

Trait Implementations

impl Clone for DatasetDescriptor

fn clone(&self) -> DatasetDescriptor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DatasetDescriptor

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DatasetDescriptor

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for DatasetDescriptor

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for DatasetDescriptor

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 DatasetDescriptor