(
self,
left: pw.Table,
right: pw.Table,
left_time_expression: pw.ColumnExpression,
right_time_expression: pw.ColumnExpression,
*on: pw.ColumnExpression,
mode: pw.JoinMode,
left_instance: pw.ColumnReference | None = None,
right_instance: pw.ColumnReference | None = None,
)
| 357 | |
| 358 | @check_arg_types |
| 359 | def _join( |
| 360 | self, |
| 361 | left: pw.Table, |
| 362 | right: pw.Table, |
| 363 | left_time_expression: pw.ColumnExpression, |
| 364 | right_time_expression: pw.ColumnExpression, |
| 365 | *on: pw.ColumnExpression, |
| 366 | mode: pw.JoinMode, |
| 367 | left_instance: pw.ColumnReference | None = None, |
| 368 | right_instance: pw.ColumnReference | None = None, |
| 369 | ) -> WindowJoinResult: |
| 370 | check_joint_types( |
| 371 | { |
| 372 | "left_time_expression": (left_time_expression, TimeEventType), |
| 373 | "right_time_expression": (right_time_expression, TimeEventType), |
| 374 | "window.hop": (self.hop, IntervalType), |
| 375 | "window.duration": (self.duration, IntervalType), |
| 376 | "window.origin": (self.origin, TimeEventType), |
| 377 | } |
| 378 | ) |
| 379 | |
| 380 | time_expression_dtype = eval_type(left_time_expression) |
| 381 | assert time_expression_dtype == eval_type( |
| 382 | right_time_expression |
| 383 | ) # checked in check_joint_types |
| 384 | |
| 385 | left_window = _assign_sliding_windows( |
| 386 | left, |
| 387 | left_time_expression, |
| 388 | None, |
| 389 | window=self, |
| 390 | ) |
| 391 | |
| 392 | right_window = _assign_sliding_windows( |
| 393 | right, |
| 394 | right_time_expression, |
| 395 | None, |
| 396 | window=self, |
| 397 | ) |
| 398 | |
| 399 | for cond in on: |
| 400 | cond_left, cond_right, cond = validate_join_condition(cond, left, right) |
| 401 | cond._left = left_window[cond_left._name] |
| 402 | cond._right = right_window[cond_right._name] |
| 403 | |
| 404 | join_result = pw.JoinResult._table_join( |
| 405 | left_window, |
| 406 | right_window, |
| 407 | left_window._pw_window_start == right_window._pw_window_start, |
| 408 | left_window._pw_window_end == right_window._pw_window_end, |
| 409 | left_window._pw_window == right_window._pw_window, |
| 410 | *on, |
| 411 | mode=mode, |
| 412 | left_instance=left_instance, |
| 413 | right_instance=right_instance, |
| 414 | ) |
| 415 | |
| 416 | return WindowJoinResult(join_result, left, right, left_window, right_window) |
nothing calls this directly
no test coverage detected