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TableSchema

Struct TableSchema 

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pub struct TableSchema {
    pub name: String,
    pub columns: Vec<ColumnDef>,
    pub indexes: Vec<IndexDef>,
    pub foreign_keys: Vec<ForeignKeyDef>,
}
Expand description

表结构定义

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§name: String

表名

§columns: Vec<ColumnDef>

列定义列表

§indexes: Vec<IndexDef>

索引定义列表

§foreign_keys: Vec<ForeignKeyDef>

外键约束列表

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impl TableSchema

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pub fn new(name: impl Into<String>) -> Self

创建新的表结构

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

添加列

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pub fn index(self, idx: IndexDef) -> Self

添加索引

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pub fn foreign_key(self, fk: ForeignKeyDef) -> Self

添加外键约束

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pub fn to_drop_sql(&self) -> String

生成删表 SQL

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pub fn primary_key(&self) -> Option<&ColumnDef>

获取主键列

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pub fn get_column(&self, name: &str) -> Option<&ColumnDef>

根据名称获取列

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impl TableSchema

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pub fn register(self) -> Self

注册当前 TableSchema 到全局注册表

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pub fn to_yaml(&self) -> String

将当前 TableSchema 导出为 YAML 字符串

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pub fn to_create_sql(&self) -> String

生成建表 SQL(使用当前数据库类型)

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pub fn to_create_sql_for(&self, db_type: DatabaseType) -> String

生成指定数据库类型的建表 SQL

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pub fn to_create_indexes_sql(&self) -> Vec<String>

生成所有创建索引的 SQL(使用当前数据库类型)

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pub fn to_create_indexes_sql_for(&self, db_type: DatabaseType) -> Vec<String>

生成所有创建索引的 SQL(指定数据库类型)

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pub fn to_full_create_sql(&self) -> Vec<String>

生成完整的建表和索引 SQL(使用当前数据库类型)

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pub fn to_full_create_sql_for(&self, db_type: DatabaseType) -> Vec<String>

生成完整的建表和索引 SQL(指定数据库类型)

Trait Implementations§

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impl Clone for TableSchema

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fn clone(&self) -> TableSchema

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TableSchema

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

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for TableSchema

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Serialize for TableSchema

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,