Struct TableSchema 

pub struct TableSchema {
    pub name: String,
    pub columns: Vec<ColumnDefinition>,
    pub indexes: Vec<IndexDefinition>,
    pub constraints: Vec<ConstraintDefinition>,
    pub options: TableOptions,
    pub version: u32,
    pub created_at: Option<DateTime<Utc>>,
    pub updated_at: Option<DateTime<Utc>>,
}

表模式定义

Fields

name: String

表名

columns: Vec<ColumnDefinition>

列定义

indexes: Vec<IndexDefinition>

索引定义

constraints: Vec<ConstraintDefinition>

约束定义

options: TableOptions

表选项

version: u32

模式版本

created_at: Option<DateTime<Utc>>

创建时间

updated_at: Option<DateTime<Utc>>

最后修改时间

Implementations

impl TableSchema

pub fn new(name: String) -> Self

创建新的表模式

pub fn add_column(self, column: ColumnDefinition) -> Self

添加列

pub fn add_index(self, index: IndexDefinition) -> Self

添加索引

pub fn add_constraint(self, constraint: ConstraintDefinition) -> Self

添加约束

pub fn with_options(self, options: TableOptions) -> Self

设置表选项

pub fn get_primary_key_columns(&self) -> Vec<&ColumnDefinition>

获取主键列

pub fn has_column(&self, column_name: &str) -> bool

检查列是否存在

pub fn get_column(&self, column_name: &str) -> Option<&ColumnDefinition>

获取列定义

pub fn has_index(&self, index_name: &str) -> bool

检查索引是否存在

pub fn get_index(&self, index_name: &str) -> Option<&IndexDefinition>

获取索引定义

pub fn validate(&self) -> Result<(), String>

验证模式定义

pub fn infer_from_data( table_name: String, data: &HashMap<String, DataValue>, ) -> Self

从数据字段推断表结构

Trait Implementations

impl Clone for TableSchema

fn clone(&self) -> TableSchema

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TableSchema

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TableSchema

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for TableSchema

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

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 TableSchema