Major version update. Major bugfixes. Security vulnerabilites fixed
This commit is contained in:
Vendored
+49
@@ -0,0 +1,49 @@
|
||||
import _ from "lodash";
|
||||
/**
|
||||
* Topologically order tables so referenced (parent) tables come before the
|
||||
* tables that reference them. Declaration order is kept wherever the FK
|
||||
* graph allows it.
|
||||
*
|
||||
* - Self references (e.g. `comments.parent_comment_id`) are ignored.
|
||||
* - References to tables outside the schema are ignored.
|
||||
* - Cycles do not throw: a table already on the current path is skipped,
|
||||
* so every table is still emitted exactly once. Foreign keys are not
|
||||
* enforced during the sync, so cycles are safe.
|
||||
*/
|
||||
export default function orderDBSchema({ db_schema, }) {
|
||||
const new_db_schema = _.cloneDeep(db_schema);
|
||||
const tables = new_db_schema.tables;
|
||||
const tables_by_name = new Map();
|
||||
for (const table of tables) {
|
||||
if (table)
|
||||
tables_by_name.set(table.tableName, table);
|
||||
}
|
||||
const ordered = [];
|
||||
const visited = new Set();
|
||||
const visiting = new Set();
|
||||
function visit(table) {
|
||||
if (visited.has(table.tableName) || visiting.has(table.tableName)) {
|
||||
return;
|
||||
}
|
||||
visiting.add(table.tableName);
|
||||
for (const field of table.fields || []) {
|
||||
const dst_table_name = field?.foreignKey?.destinationTableName;
|
||||
if (!dst_table_name || dst_table_name === table.tableName) {
|
||||
continue;
|
||||
}
|
||||
const fk_table = tables_by_name.get(dst_table_name);
|
||||
if (fk_table) {
|
||||
visit(fk_table);
|
||||
}
|
||||
}
|
||||
visiting.delete(table.tableName);
|
||||
visited.add(table.tableName);
|
||||
ordered.push(table);
|
||||
}
|
||||
for (const table of tables) {
|
||||
if (table)
|
||||
visit(table);
|
||||
}
|
||||
new_db_schema.tables = ordered;
|
||||
return new_db_schema;
|
||||
}
|
||||
Reference in New Issue
Block a user