pub struct TableSchema {
pub table_name: String,
pub columns: Vec<ColumnDefinition>,
pub primary_keys: Vec<String>,
pub cached_at: i64,
}Expand description
数据表字段元数据(对齐 PHP think\db\Fetch::getFields 返回的完整字段列表)
存储一张表所有字段的元数据,以及主键信息和缓存时间戳。
Fields§
§table_name: String表名
columns: Vec<ColumnDefinition>字段列表(按表定义顺序)
primary_keys: Vec<String>主键字段名列表(从 columns 中 primary_key == true 的字段自动提取)
cached_at: i64缓存写入时间戳(Unix 秒,用于判断缓存新鲜度)
Implementations§
Source§impl TableSchema
impl TableSchema
Sourcepub fn column(&self, name: &str) -> Option<&ColumnDefinition>
pub fn column(&self, name: &str) -> Option<&ColumnDefinition>
Sourcepub fn has_column(&self, name: &str) -> bool
pub fn has_column(&self, name: &str) -> bool
Sourcepub fn column_names(&self) -> Vec<&str>
pub fn column_names(&self) -> Vec<&str>
获取所有字段名列表
Trait Implementations§
Source§impl Clone for TableSchema
impl Clone for TableSchema
Source§fn clone(&self) -> TableSchema
fn clone(&self) -> TableSchema
Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreSource§impl Debug for TableSchema
impl Debug for TableSchema
Source§impl<'de> Deserialize<'de> for TableSchema
impl<'de> Deserialize<'de> for TableSchema
Source§fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
impl Eq for TableSchema
Source§impl PartialEq for TableSchema
impl PartialEq for TableSchema
Source§impl Serialize for TableSchema
impl Serialize for TableSchema
impl StructuralPartialEq for TableSchema
Auto Trait Implementations§
impl Freeze for TableSchema
impl RefUnwindSafe for TableSchema
impl Send for TableSchema
impl Sync for TableSchema
impl Unpin for TableSchema
impl UnsafeUnpin for TableSchema
impl UnwindSafe for TableSchema
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> DeserializeOwned for Twhere
T: for<'de> Deserialize<'de>,
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key and return true if they are equal.Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
Source§fn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§impl<T> Pointable for T
impl<T> Pointable for T
impl<T> Read<Exclusive, BecauseExclusive> for Twhere
T: ?Sized,
impl<T> Scalar for T
Source§impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
Source§fn to_subset(&self) -> Option<SS>
fn to_subset(&self) -> Option<SS>
The inverse inclusion map: attempts to construct
self from the equivalent element of its
superset. Read moreSource§fn is_in_subset(&self) -> bool
fn is_in_subset(&self) -> bool
Checks if
self is actually part of its subset T (and can be converted to it).Source§fn to_subset_unchecked(&self) -> SS
fn to_subset_unchecked(&self) -> SS
Use with care! Same as
self.to_subset but without any property checks. Always succeeds.Source§fn from_subset(element: &SS) -> SP
fn from_subset(element: &SS) -> SP
The inclusion map: converts
self to the equivalent element of its superset.