Package org.jgrapht.graph
Class AsUnweightedDirectedGraph<V,E>
- java.lang.Object
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- org.jgrapht.graph.AbstractGraph<V,E>
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- org.jgrapht.graph.GraphDelegator<V,E>
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- org.jgrapht.graph.AsUnweightedDirectedGraph<V,E>
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- All Implemented Interfaces:
java.io.Serializable
,DirectedGraph<V,E>
,Graph<V,E>
public class AsUnweightedDirectedGraph<V,E> extends GraphDelegator<V,E> implements java.io.Serializable, DirectedGraph<V,E>
An unweighted view of the backing weighted graph specified in the constructor. This graph allows modules to apply algorithms designed for unweighted graphs to a weighted graph by simply ignoring edge weights. Query operations on this graph "read through" to the backing graph. Vertex addition/removal and edge addition/removal are all supported (and immediately reflected in the backing graph).Note that edges returned by this graph's accessors are really just the edges of the underlying directed graph.
This graph does not pass the hashCode and equals operations through to the backing graph, but relies on Object's equals and hashCode methods. This graph will be serializable if the backing graph is serializable.
- Since:
- Sep 7, 2007
- Author:
- Lucas J. Scharenbroich
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description AsUnweightedDirectedGraph(DirectedGraph<V,E> g)
Constructor for AsUnweightedGraph.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description double
getEdgeWeight(E e)
Returns the weight assigned to a given edge.-
Methods inherited from class org.jgrapht.graph.GraphDelegator
addEdge, addEdge, addVertex, containsEdge, containsVertex, degreeOf, edgeSet, edgesOf, getAllEdges, getEdge, getEdgeFactory, getEdgeSource, getEdgeTarget, incomingEdgesOf, inDegreeOf, outDegreeOf, outgoingEdgesOf, removeEdge, removeEdge, removeVertex, setEdgeWeight, toString, vertexSet
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Methods inherited from class org.jgrapht.graph.AbstractGraph
assertVertexExist, containsEdge, removeAllEdges, removeAllEdges, removeAllEdges, removeAllVertices, toStringFromSets
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.jgrapht.DirectedGraph
incomingEdgesOf, inDegreeOf, outDegreeOf, outgoingEdgesOf
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Methods inherited from interface org.jgrapht.Graph
addEdge, addEdge, addVertex, containsEdge, containsEdge, containsVertex, edgeSet, edgesOf, getAllEdges, getEdge, getEdgeFactory, getEdgeSource, getEdgeTarget, removeAllEdges, removeAllEdges, removeAllVertices, removeEdge, removeEdge, removeVertex, vertexSet
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Constructor Detail
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AsUnweightedDirectedGraph
public AsUnweightedDirectedGraph(DirectedGraph<V,E> g)
Constructor for AsUnweightedGraph.- Parameters:
g
- the backing graph over which an unweighted view is to be created.
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Method Detail
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getEdgeWeight
public double getEdgeWeight(E e)
Description copied from interface:Graph
Returns the weight assigned to a given edge. Unweighted graphs return 1.0 (as defined byWeightedGraph.DEFAULT_EDGE_WEIGHT
), allowing weighted-graph algorithms to apply to them where meaningful.- Specified by:
getEdgeWeight
in interfaceGraph<V,E>
- Overrides:
getEdgeWeight
in classGraphDelegator<V,E>
- Parameters:
e
- edge of interest- Returns:
- edge weight
- See Also:
Graph.getEdgeWeight(E)
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