UniversalGraph (Visual Library API)

java.lang.Object
- org.netbeans.api.visual.graph.layout.UniversalGraph<N,E>

```
public abstract class UniversalGraph<N,E>
extends java.lang.Object
```
This interface represents an universal graph. It unifies a view on a GraphScene and GraphPinScene as a nodes-edges only graph. This is commonly used by graph-oriented layout algorithms.

Constructor Summary

Constructors
Constructor Description

UniversalGraph()

Constructors
Constructor	Description
`UniversalGraph()`

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`abstract java.util.Collection<E>`	`findNodeEdges(N node, boolean allowsOutputEdges, boolean allowsInputEdges)`	Returns edges that are attached to a specified node.
`abstract java.util.Collection<E>`	`getEdges()`	Returns a collection of edges in the graph.
`abstract N`	`getEdgeSource(E edge)`	Returns an edge source.
`abstract N`	`getEdgeTarget(E edge)`	Returns an edge target.
`abstract java.util.Collection<N>`	`getNodes()`	Returns a collection of nodes in the graph.
`abstract ObjectScene`	`getScene()`	Returns a related scene as a ObjectScene.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - UniversalGraph
```
public UniversalGraph()
```
- Method Detail
  - getScene
```
public abstract ObjectScene getScene()
```
    Returns a related scene as a ObjectScene.
    
    Returns:
    
    the related scene which is represented by the universal graph.
  - getNodes
```
public abstract java.util.Collection<N> getNodes()
```
    Returns a collection of nodes in the graph.
    
    Returns:
    
    the collection of nodes
  - getEdges
```
public abstract java.util.Collection<E> getEdges()
```
    Returns a collection of edges in the graph.
    
    Returns:
    
    the collection of edges
  - findNodeEdges
```
public abstract java.util.Collection<E> findNodeEdges(N node,
                                                      boolean allowsOutputEdges,
                                                      boolean allowsInputEdges)
```
    Returns edges that are attached to a specified node.
    
    Parameters:
    
    node - the node
    
    allowsOutputEdges - if true then it finds all edges that has the node as their source
    
    allowsInputEdges - if true then it finds all edges that has the node as their target
    
    Returns:
    
    the collection of all found edges
  - getEdgeSource
```
public abstract N getEdgeSource(E edge)
```
    Returns an edge source.
    
    Parameters:
    
    edge - the edge
    
    Returns:
    
    the edge source
  - getEdgeTarget
```
public abstract N getEdgeTarget(E edge)
```
    Returns an edge target.
    
    Parameters:
    
    edge - the edge
    
    Returns:
    
    the edge target

Class UniversalGraph<N,E>

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

UniversalGraph

Method Detail

getScene

getNodes

getEdges

findNodeEdges

getEdgeSource

getEdgeTarget