 Type Parameters:
E
 the graph edge type
 All Implemented Interfaces:
Serializable
,Graph<Integer,
E>
 Direct Known Subclasses:
AbstractSuccinctDirectedGraph
,AbstractSuccinctUndirectedGraph
This class provides mutators throwing UnsupportedOperationException
and operations
depending only on the number of vertices and edges.
 See Also:

Field Summary
Modifier and TypeFieldDescriptionprotected final int
The number of edges in the graph.protected final int
The number of vertices in the graph.protected final int
The shift used to read sources in the successor list.protected final long
The mask used to read targets in the successor list (lowestsourceShift
bits).protected static final String
Fields inherited from interface org.jgrapht.Graph
DEFAULT_EDGE_WEIGHT

Constructor Summary

Method Summary
Modifier and TypeMethodDescriptionCreates a new edge in this graph, going from the source vertex to the target vertex, and returns the created edge.boolean
Adds the specified edge to this graph, going from the source vertex to the target vertex.Creates a new vertex in this graph and returns it.boolean
Adds the specified vertex to this graph if not already present.protected boolean
Ensures that the specified vertex exists in this graph, or else throws exception.boolean
Returnstrue
if this graph contains the specified vertex.getAllEdges
(Integer sourceVertex, Integer targetVertex) Returns a set of all edges connecting source vertex to target vertex if such vertices exist in this graph.Return the edge supplier that the graph uses whenever it needs to create new edges.double
getEdgeWeight
(E e) Returns the weight assigned to a given edge.Return the vertex supplier that the graph uses whenever it needs to create new vertices.boolean
removeEdge
(E e) Removes the specified edge from the graph.removeEdge
(Integer sourceVertex, Integer targetVertex) Removes an edge going from source vertex to target vertex, if such vertices and such edge exist in this graph.boolean
Removes the specified vertex from this graph including all its touching edges if present.void
setEdgeWeight
(E e, double weight) Assigns a weight to an edge.Returns a set of the vertices contained in this graph.Methods inherited from class org.jgrapht.graph.AbstractGraph
containsEdge, equals, hashCode, removeAllEdges, removeAllEdges, removeAllEdges, removeAllVertices, toString, toStringFromSets
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface org.jgrapht.Graph
containsEdge, degreeOf, edgeSet, edgesOf, getEdge, getEdgeSource, getEdgeTarget, getType, incomingEdgesOf, inDegreeOf, iterables, outDegreeOf, outgoingEdgesOf, setEdgeWeight

Field Details

UNMODIFIABLE
 See Also:

n
protected final int nThe number of vertices in the graph. 
m
protected final int mThe number of edges in the graph. 
sourceShift
protected final int sourceShiftThe shift used to read sources in the successor list. 
targetMask
protected final long targetMaskThe mask used to read targets in the successor list (lowestsourceShift
bits).


Constructor Details

AbstractSuccinctGraph
public AbstractSuccinctGraph(int n, int m)


Method Details

vertexSet
Description copied from interface:Graph
Returns a set of the vertices contained in this graph. The set is backed by the graph, so changes to the graph are reflected in the set. If the graph is modified while an iteration over the set is in progress, the results of the iteration are undefined.The graph implementation may maintain a particular set ordering (e.g. via
LinkedHashSet
) for deterministic iteration, but this is not required. It is the responsibility of callers who rely on this behavior to only use graph implementations which support it. 
assertVertexExist
Ensures that the specified vertex exists in this graph, or else throws exception. Overrides:
assertVertexExist
in classAbstractGraph<Integer,
E>  Parameters:
v
 vertex Returns:
true
if this assertion holds. Throws:
IllegalArgumentException
 if specified vertex does not exist in this graph.

containsVertex
Description copied from interface:Graph
Returnstrue
if this graph contains the specified vertex. More formally, returnstrue
if and only if this graph contains a vertexu
such thatu.equals(v)
. If the specified vertex isnull
returnsfalse
. Specified by:
containsVertex
in interfaceGraph<Integer,
E>  Parameters:
v
 vertex whose presence in this graph is to be tested. Returns:
true
if this graph contains the specified vertex.

getAllEdges
Description copied from interface:Graph
Returns a set of all edges connecting source vertex to target vertex if such vertices exist in this graph. If any of the vertices does not exist or isnull
, returnsnull
. If both vertices exist but no edges found, returns an empty set.In undirected graphs, some of the returned edges may have their source and target vertices in the opposite order. In simple graphs the returned set is either singleton set or empty set.
 Specified by:
getAllEdges
in interfaceGraph<Integer,
E>  Parameters:
sourceVertex
 source vertex of the edge.targetVertex
 target vertex of the edge. Returns:
 a set of all edges connecting source vertex to target vertex.

getVertexSupplier
Description copied from interface:Graph
Return the vertex supplier that the graph uses whenever it needs to create new vertices.A graph uses the vertex supplier to create new vertex objects whenever a user calls method
Graph.addVertex()
. Users can also create the vertex in user code and then use methodGraph.addVertex(Object)
to add the vertex.In contrast with the
Supplier
interface, the vertex supplier has the additional requirement that a new and distinct result is returned every time it is invoked. More specifically for a new vertex to be added in a graphv
must not be equal to any other vertex in the graph. More formally, the graph must not contain any vertexv2
such thatv2.equals(v)
.Care must also be taken when interchanging calls to methods
Graph.addVertex(Object)
andGraph.addVertex()
. In such a case the user must make sure never to add vertices in the graph using methodGraph.addVertex(Object)
, which are going to be returned in the future by the supplied vertex supplier. Such a sequence will result into anIllegalArgumentException
when calling methodGraph.addVertex()
. Specified by:
getVertexSupplier
in interfaceGraph<Integer,
E>  Returns:
 the vertex supplier or
null
if the graph has no such supplier

getEdgeSupplier
Description copied from interface:Graph
Return the edge supplier that the graph uses whenever it needs to create new edges.A graph uses the edge supplier to create new edge objects whenever a user calls method
Graph.addEdge(Object, Object)
. Users can also create the edge in user code and then use methodGraph.addEdge(Object, Object, Object)
to add the edge.In contrast with the
Supplier
interface, the edge supplier has the additional requirement that a new and distinct result is returned every time it is invoked. More specifically for a new edge to be added in a graphe
must not be equal to any other edge in the graph (even if the graph allows edgemultiplicity). More formally, the graph must not contain any edgee2
such thate2.equals(e)
. Specified by:
getEdgeSupplier
in interfaceGraph<Integer,
E>  Returns:
 the edge supplier
null
if the graph has no such supplier

addEdge
Description copied from interface:Graph
Creates a new edge in this graph, going from the source vertex to the target vertex, and returns the created edge. Some graphs do not allow edgemultiplicity. In such cases, if the graph already contains an edge from the specified source to the specified target, then this method does not change the graph and returnsnull
.The source and target vertices must already be contained in this graph. If they are not found in graph
IllegalArgumentException
is thrown.This method creates the new edge
e
using this graph's edge supplier (seeGraph.getEdgeSupplier()
). For the new edge to be addede
must not be equal to any other edge the graph (even if the graph allows edgemultiplicity). More formally, the graph must not contain any edgee2
such thate2.equals(e)
. If suche2
is found then the newly created edgee
is abandoned, the method leaves this graph unchanged and returnsnull
.If the underlying graph implementation's
Graph.getEdgeSupplier()
returnsnull
, then this method cannot create edges and throws anUnsupportedOperationException
. 
addEdge
Description copied from interface:Graph
Adds the specified edge to this graph, going from the source vertex to the target vertex. More formally, adds the specified edge,e
, to this graph if this graph contains no edgee2
such thate2.equals(e)
. If this graph already contains such an edge, the call leaves this graph unchanged and returnsfalse
. Some graphs do not allow edgemultiplicity. In such cases, if the graph already contains an edge from the specified source to the specified target, then this method does not change the graph and returnsfalse
. If the edge was added to the graph, returnstrue
.The source and target vertices must already be contained in this graph. If they are not found in graph IllegalArgumentException is thrown.

addVertex
Description copied from interface:Graph
Creates a new vertex in this graph and returns it.This method creates the new vertex
v
using this graph's vertex supplier (seeGraph.getVertexSupplier()
). For the new vertex to be addedv
must not be equal to any other vertex in the graph. More formally, the graph must not contain any vertexv2
such thatv2.equals(v)
. If suchv2
is found then the newly created vertexv
is abandoned, the method leaves this graph unchanged and throws anIllegalArgumentException
.If the underlying graph implementation's
Graph.getVertexSupplier()
returnsnull
, then this method cannot create vertices and throws anUnsupportedOperationException
.Care must also be taken when interchanging calls to methods
Graph.addVertex(Object)
andGraph.addVertex()
. In such a case the user must make sure never to add vertices in the graph using methodGraph.addVertex(Object)
, which are going to be returned in the future by the supplied vertex supplier. Such a sequence will result into anIllegalArgumentException
when calling methodGraph.addVertex()
. 
addVertex
Description copied from interface:Graph
Adds the specified vertex to this graph if not already present. More formally, adds the specified vertex,v
, to this graph if this graph contains no vertexu
such thatu.equals(v)
. If this graph already contains such vertex, the call leaves this graph unchanged and returnsfalse
. In combination with the restriction on constructors, this ensures that graphs never contain duplicate vertices. 
removeEdge
Description copied from interface:Graph
Removes an edge going from source vertex to target vertex, if such vertices and such edge exist in this graph. Returns the edge if removed ornull
otherwise. Specified by:
removeEdge
in interfaceGraph<Integer,
E>  Parameters:
sourceVertex
 source vertex of the edge.targetVertex
 target vertex of the edge. Returns:
 The removed edge, or
null
if no edge removed.

removeEdge
Description copied from interface:Graph
Removes the specified edge from the graph. Removes the specified edge from this graph if it is present. More formally, removes an edgee2
such thate2.equals(e)
, if the graph contains such edge. Returnstrue
if the graph contained the specified edge. (The graph will not contain the specified edge once the call returns).If the specified edge is
null
returnsfalse
. Specified by:
removeEdge
in interfaceGraph<Integer,
E>  Parameters:
e
 edge to be removed from this graph, if present. Returns:
true
if and only if the graph contained the specified edge.

removeVertex
Description copied from interface:Graph
Removes the specified vertex from this graph including all its touching edges if present. More formally, if the graph contains a vertexu
such thatu.equals(v)
, the call removes all edges that touchu
and then removesu
itself. If no suchu
is found, the call leaves the graph unchanged. Returnstrue
if the graph contained the specified vertex. (The graph will not contain the specified vertex once the call returns).If the specified vertex is
null
returnsfalse
. Specified by:
removeVertex
in interfaceGraph<Integer,
E>  Parameters:
v
 vertex to be removed from this graph, if present. Returns:
true
if the graph contained the specified vertex;false
otherwise.

getEdgeWeight
Description copied from interface:Graph
Returns the weight assigned to a given edge. Unweighted graphs return 1.0 (as defined byGraph.DEFAULT_EDGE_WEIGHT
), allowing weightedgraph algorithms to apply to them when meaningful. Specified by:
getEdgeWeight
in interfaceGraph<Integer,
E>  Parameters:
e
 edge of interest Returns:
 edge weight

setEdgeWeight
Description copied from interface:Graph
Assigns a weight to an edge. Specified by:
setEdgeWeight
in interfaceGraph<Integer,
E>  Parameters:
e
 edge on which to set weightweight
 new weight for edge
