Class to perform serial execution of a Sequence evaluation.
| 12 | |
| 13 | |
| 14 | class ExecutionEngine(object): |
| 15 | """ |
| 16 | Class to perform serial execution of a Sequence evaluation. |
| 17 | """ |
| 18 | |
| 19 | def evaluate(self, sequence, transformations): |
| 20 | """ |
| 21 | Execute the sequence of transformations in serial |
| 22 | :param sequence: Sequence to evaluation |
| 23 | :param transformations: Transformations to apply |
| 24 | :return: Resulting sequence or value |
| 25 | """ |
| 26 | # pylint: disable=no-self-use |
| 27 | result = sequence |
| 28 | for transform in transformations: |
| 29 | strategies = transform.execution_strategies |
| 30 | if strategies is not None and ExecutionStrategies.PRE_COMPUTE in strategies: |
| 31 | result = transform.function(list(result)) |
| 32 | else: |
| 33 | result = transform.function(result) |
| 34 | return iter(result) |
| 35 | |
| 36 | |
| 37 | class ParallelExecutionEngine(ExecutionEngine): |