Module org.jgrapht.core

Package org.jgrapht.graph

Class FastLookupGraphSpecificsStrategy<V,E>

java.lang.Object

org.jgrapht.graph.FastLookupGraphSpecificsStrategy<V,E>

Type Parameters:

V - the graph vertex type

E - the graph edge type

All Implemented Interfaces:

java.io.Serializable, GraphSpecificsStrategy<V,E>

public class FastLookupGraphSpecificsStrategy<V,E>
extends java.lang.Object
implements GraphSpecificsStrategy<V,E>

The fast lookup specifics strategy implementation.

Graphs constructed using this strategy use additional data structures to improve the performance of methods which depend on edge retrievals, e.g. getEdge(V u, V v), containsEdge(V u, V v),addEdge(V u, V v). A disadvantage is an increase in memory consumption. If memory utilization is an issue, use the DefaultGraphSpecificsStrategy instead.

Author:

Dimitrios Michail

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
FastLookupGraphSpecificsStrategy()

Method Summary

Modifier and Type	Method	Description
java.util.function.Function<GraphType,IntrusiveEdgesSpecifics<V,E>>	getIntrusiveEdgesSpecificsFactory()	Get a function which creates the intrusive edges specifics.
java.util.function.BiFunction<Graph<V,E>,GraphType,Specifics<V,E>>	getSpecificsFactory()	Get a function which creates the specifics.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jgrapht.graph.GraphSpecificsStrategy

getEdgeSetFactory

Constructor Details

FastLookupGraphSpecificsStrategy

public FastLookupGraphSpecificsStrategy()

Method Details

getIntrusiveEdgesSpecificsFactory

public java.util.function.Function<GraphType,IntrusiveEdgesSpecifics<V,E>> getIntrusiveEdgesSpecificsFactory()

Description copied from interface: GraphSpecificsStrategy

Get a function which creates the intrusive edges specifics. The factory will accept the graph type as a parameter.

Note that it is very important to use a map implementation which respects iteration order.

Specified by:

getIntrusiveEdgesSpecificsFactory in interface GraphSpecificsStrategy<V,E>

Returns:

a function which creates intrusive edges specifics.

getSpecificsFactory

public java.util.function.BiFunction<Graph<V,E>,GraphType,Specifics<V,E>> getSpecificsFactory()

Description copied from interface: GraphSpecificsStrategy

Get a function which creates the specifics. The factory will accept the graph type as a parameter.

Specified by:

getSpecificsFactory in interface GraphSpecificsStrategy<V,E>

Returns:

a function which creates intrusive edges specifics.