DataEdge (AristaFlow Business Process Platform API)

All Superinterfaces:

UserAttributeContainer
```
public interface DataEdge
extends UserAttributeContainer
```
There may be only one data edge connecting a data element and a node per direction. This implies that a data element, a node and the type of the data edge (READ or WRITE) identify a data edge unambiguously.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ActivityConstants.AccessType`	`getType()`	Returns the constant stating the type of the edge (READ or WRITE).
`boolean`	`isOptional()`	Returns true, if the access of the data element is optional.

Methods inherited from interface de.aristaflow.adept2.model.common.UserAttributeContainer
getUserAttributes, getUserAttributeValue, removeUserAttributeValue, setUserAttributeValue

- Method Detail
  - getType
```
ActivityConstants.AccessType getType()
```
    Returns the constant stating the type of the edge (READ or WRITE).
    
    Returns:
    
    The element type.
  - isOptional
```
boolean isOptional()
```
    Returns true, if the access of the data element is optional. This is the case, if and only if, the parameter of the activity which uses this data edge, is optional.
    
    Returns:
    
    True, if the data edge represents optional access to the data.