Method: Extralite::Changeset#each

Defined in:
ext/extralite/changeset.c

#each ⇒ Extralite::Changeset

Iterates through the changeset, providing each change to the given block. Each change entry is an array containing the operation (:insert / :update / :delete), the table name, an array containing the old values, and an array containing the new values.

changeset.each do |(op, table, old_values, new_values)|
  ...
end

Returns:



308
309
310
311
312
313
314
315
316
317
318
319
 
# File 'ext/extralite/changeset.c', line 308

VALUE Changeset_each(VALUE self) {
  Changeset_t *changeset = self_to_changeset(self);
  verify_changeset(changeset);

  struct each_ctx ctx = { .iter = NULL };
  int rc = sqlite3changeset_start(&ctx.iter, changeset->changeset_len, changeset->changeset_ptr);
  if (rc!=SQLITE_OK)
    rb_raise(cError, "Error while starting iterator: %s", sqlite3_errstr(rc));

  rb_ensure(SAFE(safe_each), (VALUE)&ctx, SAFE(cleanup_iter), (VALUE)&ctx);
  return self;
}