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SchemaReflector

Struct SchemaReflector 

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pub struct SchemaReflector<'a> { /* private fields */ }
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Schema 反射器

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impl<'a> SchemaReflector<'a>

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pub fn new(conn: &'a dyn DatabaseConnection) -> Self

创建新的反射器

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pub async fn get_table_names(&self) -> DatabaseResult<Vec<String>>

获取所有表名

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pub async fn get_table_schema( &self, table_name: &str, ) -> DatabaseResult<TableSchema>

获取表的完整结构

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pub async fn get_foreign_keys( &self, table_name: &str, ) -> DatabaseResult<Vec<ForeignKeyDef>>

获取表的所有外键约束

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pub async fn get_columns( &self, table_name: &str, ) -> DatabaseResult<Vec<ColumnDef>>

获取表的所有列

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pub async fn get_indexes( &self, table_name: &str, ) -> DatabaseResult<Vec<IndexDef>>

获取表的所有索引

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pub async fn get_all_schemas( &self, ) -> DatabaseResult<HashMap<String, TableSchema>>

获取所有表的 Schema

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pub async fn table_exists(&self, table_name: &str) -> DatabaseResult<bool>

检查表是否存在

Auto Trait Implementations§

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impl<'a> Freeze for SchemaReflector<'a>

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impl<'a> !RefUnwindSafe for SchemaReflector<'a>

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impl<'a> !Send for SchemaReflector<'a>

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impl<'a> !Sync for SchemaReflector<'a>

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impl<'a> Unpin for SchemaReflector<'a>

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impl<'a> UnsafeUnpin for SchemaReflector<'a>

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impl<'a> !UnwindSafe for SchemaReflector<'a>

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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> 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> Same for T

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type Output = T

Should always be Self
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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.