Examples with AbstractUndoExecutor io.seata.rm.datasource.undo.AbstractUndoExecutor used on opensource projects

Example 1 with AbstractUndoExecutor

use of io.seata.rm.datasource.undo.AbstractUndoExecutor in project seata by seata.

the class MySQLUndoDeleteExecutor method buildUndoSQL.

/**
 * Undo delete.
 *
 * Notice: PK is at last one.
 * @see AbstractUndoExecutor#undoPrepare
 *
 * @return sql
 */
@Override
protected String buildUndoSQL() {
    TableRecords beforeImage = sqlUndoLog.getBeforeImage();
    List<Row> beforeImageRows = beforeImage.getRows();
    if (CollectionUtils.isEmpty(beforeImageRows)) {
        throw new ShouldNeverHappenException("Invalid UNDO LOG");
    }
    Row row = beforeImageRows.get(0);
    List<Field> fields = new ArrayList<>(row.nonPrimaryKeys());
    fields.addAll(getOrderedPkList(beforeImage, row, JdbcConstants.MYSQL));
    // delete sql undo log before image all field come from table meta, need add escape.
    // see BaseTransactionalExecutor#buildTableRecords
    String insertColumns = fields.stream().map(field -> ColumnUtils.addEscape(field.getName(), JdbcConstants.MYSQL)).collect(Collectors.joining(", "));
    String insertValues = fields.stream().map(field -> "?").collect(Collectors.joining(", "));
    return String.format(INSERT_SQL_TEMPLATE, sqlUndoLog.getTableName(), insertColumns, insertValues);
}