Struct RowCopier 

pub struct RowCopier<'a> {
    pub owner_layer: i64,
    pub skip: HashSet<(String, String)>,
    pub new_externals: Vec<(String, Vec<u8>)>,
    /* private fields */
}

Copies rows, and everything they link to, from one file’s database to another’s.

Fields

owner_layer: i64

The layer id written into layer-owned columns.

skip: HashSet<(String, String)>

(table, column) values copied unchanged (links not followed).

new_externals: Vec<(String, Vec<u8>)>

External chunks copied so far, to be stored in the target file.

Implementations

impl<'a> RowCopier<'a>

pub fn new( source: &'a ClipFile, payload_hook: Option<&'a PayloadHook<'a>>, canvas_id: i64, ) -> Result<Self>

A copier reading from source. payload_hook rewrites external payloads as they are copied; canvas_id is the target’s Canvas.MainId.

pub fn copy( &mut self, target: &Connection, table: &str, main_id: i64, ) -> Result<i64>

Copy row main_id of table into target; return its id there.

pub fn translate( &mut self, target: &Connection, table: &str, row: Row, new_id: i64, ) -> Result<Row>

Rewrite the id, owner columns, links and external ids of one row.