Struct Row 

pub struct Row {
    pub primary_key: PrimaryKey,
    pub columns: Vec<Column>,
    pub deleted: bool,
}

宽表模型的行

Fields

primary_key: PrimaryKey

主键列

columns: Vec<Column>

数据列

deleted: bool

是否要删除行

Implementations

impl Row

pub fn new() -> Self

pub fn get_primary_key_value(&self, name: &str) -> Option<&PrimaryKeyValue>

获取给定名称的主键的值

pub fn get_column_value(&self, name: &str) -> Option<&ColumnValue>

获取给定名称的列的值, 适用于列在行中只出现一次的情况

pub fn primary_key(self, pk: PrimaryKey) -> Self

设置主键

pub fn primary_key_column(self, pk_col: PrimaryKeyColumn) -> Self

添加一个主键列

pub fn primary_key_columns( self, pk_cols: impl IntoIterator<Item = PrimaryKeyColumn>, ) -> Self

设置全部主键列

pub fn primary_key_column_string( self, name: &str, value: impl Into<String>, ) -> Self

添加字符串类型的主键值

pub fn primary_key_column_integer(self, name: &str, value: i64) -> Self

添加整数类型的主键值

pub fn primary_key_column_binary( self, name: &str, value: impl Into<Vec<u8>>, ) -> Self

添加二进制类型的主键值

pub fn primary_key_column_auto_increment(self, name: &str) -> Self

添加自增主键列

pub fn column(self, col: Column) -> Self

添加一个自定义的列

pub fn columns(self, cols: impl IntoIterator<Item = Column>) -> Self

设置列

pub fn column_string(self, name: &str, value: impl Into<String>) -> Self

添加/更新字符串类型的列

pub fn column_integer(self, name: &str, value: i64) -> Self

添加/更新整数列

pub fn column_double(self, name: &str, value: f64) -> Self

添加/更新双精度列

pub fn column_bool(self, name: &str, value: bool) -> Self

添加/更新布尔值列

pub fn column_blob(self, name: &str, value: impl Into<Vec<u8>>) -> Self

添加/更新二进制列

pub fn column_to_increse(self, name: &str, inc: i64) -> Self

添加要递增值的列。这个是用在 UpdateRow 的时候使用的

pub fn column_to_delete(self, name: &str, timestamp: u64) -> Self

添加要删除指定版本值的列

pub fn column_to_delete_all_versions(self, name: &str) -> Self

添加要删除全部版本的列

pub fn delete_marker(self) -> Self

添加行删除标记。这个仅在删除行的时候用得到

Trait Implementations

impl Clone for Row

fn clone(&self) -> Row

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Row

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

Formats the value using the given formatter.

impl Default for Row

fn default() -> Row

Returns the “default value” for a type.

impl From<Row> for TimeseriesRow

从宽表行转换出来时序行

fn from(value: Row) -> Self

Converts to this type from the input type.

impl From<TimeseriesRow> for Row

fn from(value: TimeseriesRow) -> Self

Converts to this type from the input type.

impl TryFromBytes for Row

fn try_from_bytes(bytes: Vec<u8>) -> OtsResult<Vec<Self>>