Struct KeyIndex

pub struct KeyIndex {
    pub keys: Vec<Key>,
    pub alias: HashMap<String, String>,
    /* private fields */
}

KeyIndex is used to store the keys for the super::ColumnFrame The keys are stored in the order they are added - the order is preserved The keys are stored in the Vec and the indexes are stored in the HashMap The indexes are used to access the data in the super::ColumnFrame by the column Key NOTE: The keys are unique - if the key is already present, it will be removed

Fields

keys: Vec<Key>

alias: HashMap<String, String>

Implementations

impl KeyIndex

pub fn new(keys: Vec<Key>) -> Self

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn get_column_index(&self, key: &Key) -> Option<usize>

pub fn get_keys(&self) -> &[Key]

pub fn get_key(&self, idx: usize) -> Option<Key>

pub fn get_complement_keys(&self, keys: &[Key]) -> Vec<Key>

pub fn select(&self, keys: &[Key]) -> KeyIndex

pub fn indexes(&self) -> Vec<usize>

pub fn store_key(&mut self, key: Key)

pub fn remove_key(&mut self, key: &Key) -> Option<(Key, usize)>

pub fn get_as_candidate( &self, row: ArrayView1<'_, DataValue>, ) -> HashMap<Key, DataValue>

pub fn to_vec_row(&self, candidate: HashMap<Key, DataValue>) -> Vec<DataValue>

pub fn check_order_of_indexes(&self, other: &Self) -> Result<(), Error>

pub fn rename_key(&mut self, key: &str, new_key: Key) -> Result<(), Error>

pub fn add_alias(&mut self, key: &str, alias: &str) -> Result<(), Error>

Trait Implementations

impl Clone for KeyIndex

fn clone(&self) -> KeyIndex

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for KeyIndex

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

Formats the value using the given formatter.

impl Default for KeyIndex

fn default() -> KeyIndex

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for KeyIndex

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<Vec<Key>> for KeyIndex

fn from(keys: Vec<Key>) -> Self

Converts to this type from the input type.

impl PartialEq for KeyIndex

fn eq(&self, other: &KeyIndex) -> 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 Serialize for KeyIndex

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 KeyIndex