Struct TableSchema 

pub struct TableSchema<S> { /* private fields */ }

A table schema parsed from binary changeset/patchset data.

This type implements DynTable and SchemaWithPK, allowing it to be used with DiffSetBuilder.

Implementations

impl<S> TableSchema<S>

pub fn new(name: S, column_count: usize, pk_flags: Vec<u8>) -> Self

Create a new parsed table schema.

pub fn name(&self) -> &S

Returns the name of the table.

pub fn pk_flags(&self) -> &[u8]

Returns the raw primary-key flags. Each byte at index i represents column i: 0 means the column is not part of the primary key, and a non-zero value k means it is the k-th column in the composite primary key.

Trait Implementations

impl<S: Clone> Clone for TableSchema<S>

fn clone(&self) -> TableSchema<S>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<S: Debug> Debug for TableSchema<S>

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

Formats the value using the given formatter.

impl<S: AsRef<str> + Clone + Eq + Debug> DynTable for TableSchema<S>

fn name(&self) -> &str

The table name.

fn number_of_columns(&self) -> usize

The number of columns in the table.

fn write_pk_flags(&self, buf: &mut [u8])

Write primary key flags to the buffer.

impl<S: Eq> Eq for TableSchema<S>

impl<S: Hash> Hash for TableSchema<S>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<S: PartialEq> PartialEq for TableSchema<S>

fn eq(&self, other: &TableSchema<S>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<N: AsRef<str> + Clone + Hash + Eq + Debug> SchemaWithPK for TableSchema<N>

fn number_of_primary_keys(&self) -> usize

Returns the number of primary key columns in the schema.

fn primary_key_index(&self, col_idx: usize) -> Option<usize>

Returns the primary key index of the primary key by the column index.

fn extract_pk<S, B>( &self, values: &impl IndexableValues<Text = S, Binary = B>, ) -> Vec<Value<S, B>>

where S: Clone, B: Clone,

Extract primary key values from a full row.

impl<S: PartialEq> StructuralPartialEq for TableSchema<S>