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LinkDecl

Struct LinkDecl 

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pub struct LinkDecl {
    pub source: String,
    pub role: Option<Role>,
    pub priority: Option<i64>,
    pub database: Option<String>,
    pub schema: Option<String>,
}
Expand description

一条链路声明(store.config.json 的 links[<schema>] 一项)。

外置配置,禁写入 schema 定义文件(设计 §4.1);source/database/schema 三元组标识一个既有或待补建的落点,role/priority 为读解析排序属性。

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§source: String

连接名(必须已在 sources 声明)

§role: Option<Role>

链路角色;缺省 None = 未声明(排序时视作最低层,不参与 primary 唯一性校验)

§priority: Option<i64>

同 role 内升序排序;缺省 None = 视作最大;允许负数

§database: Option<String>

库:缺省 = sources[source].databases 的唯一库(多库须显式给)

§schema: Option<String>

连接内 schema(仅 PG 有意义)

Trait Implementations§

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impl Clone for LinkDecl

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

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

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

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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 = !

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

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.