Trait simple_tables::IdTable[−][src]

pub trait IdTable<UidType, Row>: Table<Row> where
    UidType: PartialEq<UidType>,
    Row: TableRow, {
    fn get_id_from_row(row: &Row) -> UidType;

    fn get_row(&self, uid: UidType) -> Option<&Row> { ... }
    fn get_row_mut(&mut self, uid: UidType) -> Option<&mut Row> { ... }
    fn get_row_index(&self, uid: UidType) -> Option<usize> { ... }
    fn rm_row(&mut self, uid: UidType) -> Result<Row, TableError> { ... }
}

Expand description

Defines a table with a unique identifier. This class should be implemented alongside the Table trait.

When you have a table with a uid, this trait has to be implemented manually for now.

To implement

get_id_from_row

Notes

If your IDE tells you following error when implementing this trait:
```
the trait bound `MyTable: Table<TableRow>` is not satisfied
```
you can simply ignore it given that you are using the table_row macro. Your IDE just doesn’t know the Table trait is already implemented for your struct. When you run your program, it will actually compile and run.

Required methods

[src]

fn get_id_from_row(row: &Row) -> UidType

Gets the uid from a row, this should be implemented manually (for now) for structs with uids.

Example

#[table_row]
struct MyTableRow {
    id: i32,
    name: String
}

#[table(rows = MyTableRow)]
struct MyTable {}

impl simple_tables::IdTable<i32, MyTableRow> for MyTable {
    fn get_id_from_row(row: i32) -> i32 {
        row.id
    }
}