Struct Location 

pub struct Location {
    pub source: String,
    pub database: Option<String>,
    pub schema: Option<String>,
}

落点：定义之外，由「目录语义 + 连接配置」解析得到（设计 §5.2）。 落点维度 = source + database + schema（schema 仅 PostgreSQL）。

Fields

source: String

连接选择（source 名）；缺省 DEFAULT_SOURCE

database: Option<String>

连接内「库」：Mongo db / MySQL database / SQLite attached / PG 库

schema: Option<String>

连接内「schema」：仅 PostgreSQL

Trait Implementations

impl Clone for Location

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Location

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

Formats the value using the given formatter.

impl Default for Location

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Location

impl PartialEq for Location

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Location