FlowGraphFilter.Backward (formcycle: bom 8.1.1 API)

All Superinterfaces:

FlowGraphFilter

All Known Subinterfaces:

FlowGraphFilter.Generic

Enclosing interface:

FlowGraphFilter
```
public static interface FlowGraphFilter.Backward
extends FlowGraphFilter
```
A FlowGraphFilter for backward graph traversals.
A backward traversal is a traversal that only traverses edge in the opposite direction they point to, i.e. a traversal that only accesses the predecessors of a node.

Since:

8.0.0

Author:

XIMA MEDIA GmbH

See Also:

FlowGraphFilter.Forward

Nested Class Summary
- Nested classes/interfaces inherited from interface de.xima.fc.interfaces.workflow.analysis.FlowGraphFilter
  FlowGraphFilter.Backward, FlowGraphFilter.Forward, FlowGraphFilter.Generic

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`IFlowGraphFilterInstance`	`newBackwardTraversal(Set<NodeKey> startNodes, ITaskFlowAnalysisData data)`	Called at the beginning before a forward traversal operation on flow graph starts (e.g.

- Method Detail
  - newBackwardTraversal
```
IFlowGraphFilterInstance newBackwardTraversal(Set<NodeKey> startNodes,
                                              ITaskFlowAnalysisData data)
```
    Called at the beginning before a forward traversal operation on flow graph starts (e.g. when finding the predecessors of a node). Must create the filter method to use during the traversal operation. That filter may make use some state derived from the given params.
    A backward traversal is a traversal that only traverses edge in the opposite direction they point to, i.e. a traversal that only accesses the predecessors of a node.
    
    Parameters:
    
    startNodes - A set of nodes in the flow graph where the traversal starts.
    
    data - Flow graph analysis result upon which the traversal operation is performed.
    
    Returns:
    
    The filter instance to use for the duration of a single traversal operation.