| Name | Description | Type | Package | Framework |
| BoundariesElementExpression | Class | cascading.flow.planner.rule.elementexpression | Cascading | |
| GroupOrMergeElementExpression | Class | cascading.flow.planner.rule.elementexpression | Cascading | |
| TapOrBoundaryElementExpression | Class | cascading.flow.planner.rule.elementexpression | Cascading | |