Struct TableState 

pub struct TableState {
    pub columns: Vec<ColumnSpec>,
    pub comment: Option<String>,
    pub properties: BTreeMap<String, String>,
    pub managed_comment_hashes: BTreeMap<String, String>,
}

The live state of a table as reported by a backend’s describe.

managed_comment_hashes records the twg:comment_hash the backend last stamped per column (and the table under the empty-string key), so the planner can tell an unchanged managed comment (skip) from a drifted one (re-stamp) without re-reading the comment text.

Fields

columns: Vec<ColumnSpec>

Live columns in the table.

comment: Option<String>

Live table-level comment, if any.

properties: BTreeMap<String, String>

Live table properties/tags.

managed_comment_hashes: BTreeMap<String, String>

Last-synced managed comment hashes, keyed by column name (the table’s own managed-comment hash uses the empty string "" as its key).

Implementations

impl TableState

pub fn empty() -> Self

An empty live state (no columns, no comment) — a convenience for tests and for backends building up state incrementally.

pub fn column(&self, name: &str) -> Option<&ColumnSpec>

Look up a live column by name.

Trait Implementations

impl Clone for TableState

fn clone(&self) -> TableState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TableState

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

Formats the value using the given formatter.

impl PartialEq for TableState

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for TableState

impl StructuralPartialEq for TableState