java.lang.Object
- com.google.common.graph.AbstractNetwork<N,E>
- - com.google.common.graph.ImmutableNetwork<N,E>

Type Parameters:

N - Node parameter type

E - Edge parameter type

All Implemented Interfaces:

Network<N,E>, PredecessorsFunction<N>, SuccessorsFunction<N>
```
@Beta
@Immutable(containerOf={"N","E"})
public final class ImmutableNetwork<N,E>
extends AbstractNetwork<N,E>
```
A Network whose elements and structural relationships will never change. Instances of this class may be obtained with copyOf(Network).
See the Guava User's Guide's discussion of the Immutable* types for more information on the properties and guarantees provided by this class.

Since:

20.0

Author:

James Sexton, Joshua O'Madadhain, Omar Darwish, Jens Nyman

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class ImmutableNetwork.Builder<N,E>
A builder for creating ImmutableNetwork instances, especially static final networks.

Field Summary

Fields
Modifier and Type	Field	Description
`protected com.google.common.graph.MapIteratorCache<E,N>`	`edgeToReferenceNode`
`protected com.google.common.graph.MapIteratorCache<N,com.google.common.graph.NetworkConnections<N,E>>`	`nodeConnections`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`Set<N>`	`adjacentNodes(N node)`	Returns the nodes which have an incident edge in common with `node` in this network.
`boolean`	`allowsParallelEdges()`	Returns true if this network allows parallel edges.
`boolean`	`allowsSelfLoops()`	Returns true if this network allows self-loops (edges that connect a node to itself).
`ImmutableGraph<N>`	`asGraph()`	Returns a live view of this network as a `Graph`.
`protected com.google.common.graph.NetworkConnections<N,E>`	`checkedConnections(N node)`
`protected N`	`checkedReferenceNode(E edge)`
`protected boolean`	`containsEdge(@Nullable E edge)`
`protected boolean`	`containsNode(@Nullable N node)`
`static <N,E> ImmutableNetwork<N,E>`	`copyOf(ImmutableNetwork<N,E> network)`	Deprecated. no need to use this
`static <N,E> ImmutableNetwork<N,E>`	`copyOf(Network<N,E> network)`	Returns an immutable copy of `network`.
`ElementOrder<E>`	`edgeOrder()`	Returns the order of iteration for the elements of `Network.edges()`.
`Set<E>`	`edges()`	Returns all edges in this network, in the order specified by `Network.edgeOrder()`.
`Set<E>`	`edgesConnecting(N nodeU, N nodeV)`	Returns the set of edges that each directly connect `nodeU` to `nodeV`.
`Set<E>`	`incidentEdges(N node)`	Returns the edges whose `incident nodes` in this network include `node`.
`EndpointPair<N>`	`incidentNodes(E edge)`	Returns the nodes which are the endpoints of `edge` in this network.
`Set<E>`	`inEdges(N node)`	Returns all edges in this network which can be traversed in the direction (if any) of the edge to end at `node`.
`boolean`	`isDirected()`	Returns true if the edges in this network are directed.
`ElementOrder<N>`	`nodeOrder()`	Returns the order of iteration for the elements of `Network.nodes()`.
`Set<N>`	`nodes()`	Returns all nodes in this network, in the order specified by `Network.nodeOrder()`.
`Set<E>`	`outEdges(N node)`	Returns all edges in this network which can be traversed in the direction (if any) of the edge starting from `node`.
`Set<N>`	`predecessors(N node)`	Returns all nodes in this network adjacent to `node` which can be reached by traversing `node`'s incoming edges against the direction (if any) of the edge.
`Set<N>`	`successors(N node)`	Returns all nodes in this network adjacent to `node` which can be reached by traversing `node`'s outgoing edges in the direction (if any) of the edge.

Methods inherited from class com.google.common.graph.AbstractNetwork
adjacentEdges, degree, edgeConnecting, edgeConnecting, edgeConnectingOrNull, edgeConnectingOrNull, edgesConnecting, equals, hasEdgeConnecting, hasEdgeConnecting, hashCode, inDegree, isOrderingCompatible, outDegree, toString, validateEndpoints

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

- Field Detail
  - nodeConnections
```
protected final com.google.common.graph.MapIteratorCache<N,com.google.common.graph.NetworkConnections<N,E>> nodeConnections
```
  - edgeToReferenceNode
```
protected final com.google.common.graph.MapIteratorCache<E,N> edgeToReferenceNode
```
- Method Detail
  - copyOf
```
public static <N,E> ImmutableNetwork<N,E> copyOf(Network<N,E> network)
```
    Returns an immutable copy of network.
  - copyOf
```
@Deprecated
public static <N,E> ImmutableNetwork<N,E> copyOf(ImmutableNetwork<N,E> network)
```
    Deprecated.
    no need to use this
    
    Simply returns its argument.
  - asGraph
```
public ImmutableGraph<N> asGraph()
```
    Description copied from interface: Network
    
    Returns a live view of this network as a Graph. The resulting Graph will have an edge connecting node A to node B if this Network has an edge connecting A to B.
    If this network allows parallel edges, parallel edges will be treated as if collapsed into a single edge. For example, the Network.degree(Object) of a node in the Graph view may be less than the degree of the same node in this Network.
    
    Specified by:
    
    asGraph in interface Network<N,E>
    
    Overrides:
    
    asGraph in class AbstractNetwork<N,E>
  - nodes
```
public Set<N> nodes()
```
    Description copied from interface: Network
    
    Returns all nodes in this network, in the order specified by Network.nodeOrder().
  - edges
```
public Set<E> edges()
```
    Description copied from interface: Network
    
    Returns all edges in this network, in the order specified by Network.edgeOrder().
  - isDirected
```
public boolean isDirected()
```
    Description copied from interface: Network
    
    Returns true if the edges in this network are directed. Directed edges connect a source node to a target node, while undirected edges connect a pair of nodes to each other.
  - allowsParallelEdges
```
public boolean allowsParallelEdges()
```
    Description copied from interface: Network
    
    Returns true if this network allows parallel edges. Attempting to add a parallel edge to a network that does not allow them will throw an IllegalArgumentException.
  - allowsSelfLoops
```
public boolean allowsSelfLoops()
```
    Description copied from interface: Network
    
    Returns true if this network allows self-loops (edges that connect a node to itself). Attempting to add a self-loop to a network that does not allow them will throw an IllegalArgumentException.
  - nodeOrder
```
public ElementOrder<N> nodeOrder()
```
    Description copied from interface: Network
    
    Returns the order of iteration for the elements of Network.nodes().
  - edgeOrder
```
public ElementOrder<E> edgeOrder()
```
    Description copied from interface: Network
    
    Returns the order of iteration for the elements of Network.edges().
  - incidentEdges
```
public Set<E> incidentEdges(N node)
```
    Description copied from interface: Network
    
    Returns the edges whose incident nodes in this network include node.
    This is equal to the union of Network.inEdges(Object) and Network.outEdges(Object).
  - incidentNodes
```
public EndpointPair<N> incidentNodes(E edge)
```
    Description copied from interface: Network
    
    Returns the nodes which are the endpoints of edge in this network.
  - adjacentNodes
```
public Set<N> adjacentNodes(N node)
```
    Description copied from interface: Network
    
    Returns the nodes which have an incident edge in common with node in this network.
    This is equal to the union of Network.predecessors(Object) and Network.successors(Object).
  - edgesConnecting
```
public Set<E> edgesConnecting(N nodeU,
                              N nodeV)
```
    Description copied from interface: Network
    
    Returns the set of edges that each directly connect nodeU to nodeV.
    In an undirected network, this is equal to edgesConnecting(nodeV, nodeU).
    The resulting set of edges will be parallel (i.e. have equal Network.incidentNodes(Object). If this network does not allow parallel edges, the resulting set will contain at most one edge (equivalent to edgeConnecting(nodeU, nodeV).asSet()).
    
    Specified by:
    
    edgesConnecting in interface Network<N,E>
    
    Overrides:
    
    edgesConnecting in class AbstractNetwork<N,E>
  - inEdges
```
public Set<E> inEdges(N node)
```
    Description copied from interface: Network
    
    Returns all edges in this network which can be traversed in the direction (if any) of the edge to end at node.
    In a directed network, an incoming edge's EndpointPair.target() equals node.
    In an undirected network, this is equivalent to Network.incidentEdges(Object).
  - outEdges
```
public Set<E> outEdges(N node)
```
    Description copied from interface: Network
    
    Returns all edges in this network which can be traversed in the direction (if any) of the edge starting from node.
    In a directed network, an outgoing edge's EndpointPair.source() equals node.
    In an undirected network, this is equivalent to Network.incidentEdges(Object).
  - predecessors
```
public Set<N> predecessors(N node)
```
    Description copied from interface: Network
    
    Returns all nodes in this network adjacent to node which can be reached by traversing node's incoming edges against the direction (if any) of the edge.
    In an undirected network, this is equivalent to Network.adjacentNodes(Object).
  - successors
```
public Set<N> successors(N node)
```
    Description copied from interface: Network
    
    Returns all nodes in this network adjacent to node which can be reached by traversing node's outgoing edges in the direction (if any) of the edge.
    In an undirected network, this is equivalent to Network.adjacentNodes(Object).
    This is not the same as "all nodes reachable from node by following outgoing edges". For that functionality, see Graphs.reachableNodes(Graph, Object).
  - checkedConnections
```
protected final com.google.common.graph.NetworkConnections<N,E> checkedConnections(N node)
```
  - checkedReferenceNode
```
protected final N checkedReferenceNode(E edge)
```
  - containsNode
```
protected final boolean containsNode(@Nullable N node)
```
  - containsEdge
```
protected final boolean containsEdge(@Nullable E edge)
```

Class ImmutableNetwork<N,​E>

Nested Class Summary

Field Summary

Method Summary

Methods inherited from class com.google.common.graph.AbstractNetwork

Methods inherited from class java.lang.Object

Field Detail

nodeConnections

edgeToReferenceNode

Method Detail

copyOf

copyOf

asGraph

nodes

edges

isDirected

allowsParallelEdges

allowsSelfLoops

nodeOrder

edgeOrder

incidentEdges

incidentNodes

adjacentNodes

edgesConnecting

inEdges

outEdges

predecessors

successors

checkedConnections

checkedReferenceNode

containsNode

containsEdge

Class ImmutableNetwork<N,E>