java.lang.Object
- com.google.common.graph.AbstractGraph<N>
- - com.google.common.graph.ImmutableGraph<N>

Type Parameters:

N - Node parameter type

All Implemented Interfaces:

Graph<N>, PredecessorsFunction<N>, SuccessorsFunction<N>
```
@Beta
public class ImmutableGraph<N>
extends AbstractGraph<N>
```
A Graph whose elements and structural relationships will never change. Instances of this class may be obtained with copyOf(Graph).
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

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`java.util.Set<N>`	`adjacentNodes(N node)`	Returns the nodes which have an incident edge in common with `node` in this graph.
`boolean`	`allowsSelfLoops()`	Returns true if this graph allows self-loops (edges that connect a node to itself).
`static <N> ImmutableGraph<N>`	`copyOf(Graph<N> graph)`	Returns an immutable copy of `graph`.
`static <N> ImmutableGraph<N>`	`copyOf(ImmutableGraph<N> graph)`	Deprecated. no need to use this
`int`	`degree(N node)`	Returns the count of `node`'s incident edges, counting self-loops twice (equivalently, the number of times an edge touches `node`).
`protected com.google.common.graph.BaseGraph<N>`	`delegate()`
`protected long`	`edgeCount()`	Defer to `BaseGraph.edges()` (based on `Graph.successors(Object)`) for full edges() implementation.
`java.util.Set<EndpointPair<N>>`	`edges()`	An implementation of `BaseGraph.edges()` defined in terms of `nodes()` and `SuccessorsFunction.successors(Object)`.
`boolean`	`hasEdgeConnecting(N nodeU, N nodeV)`	Returns true if there is an edge directly connecting `nodeU` to `nodeV`.
`java.util.Set<EndpointPair<N>>`	`incidentEdges(N node)`
`int`	`inDegree(N node)`	Returns the count of `node`'s incoming edges (equal to `predecessors(node).size()`) in a directed graph.
`boolean`	`isDirected()`	Returns true if the edges in this graph are directed.
`ElementOrder<N>`	`nodeOrder()`	Returns the order of iteration for the elements of `Graph.nodes()`.
`java.util.Set<N>`	`nodes()`	Returns all nodes in this graph, in the order specified by `Graph.nodeOrder()`.
`int`	`outDegree(N node)`	Returns the count of `node`'s outgoing edges (equal to `successors(node).size()`) in a directed graph.
`java.util.Set<N>`	`predecessors(N node)`	Returns all nodes in this graph adjacent to `node` which can be reached by traversing `node`'s incoming edges against the direction (if any) of the edge.
`java.util.Set<N>`	`successors(N node)`	Returns all nodes in this graph 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.AbstractGraph
equals, hashCode, toString

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

Methods inherited from interface com.google.common.graph.Graph
edges, incidentEdges

- Method Detail
  - copyOf
```
public static <N> ImmutableGraph<N> copyOf(Graph<N> graph)
```
    Returns an immutable copy of graph.
  - copyOf
```
@Deprecated
public static <N> ImmutableGraph<N> copyOf(ImmutableGraph<N> graph)
```
    Deprecated.
    no need to use this
    
    Simply returns its argument.
  - delegate
```
protected com.google.common.graph.BaseGraph<N> delegate()
```
  - nodes
```
public java.util.Set<N> nodes()
```
    Description copied from interface: Graph
    
    Returns all nodes in this graph, in the order specified by Graph.nodeOrder().
  - edgeCount
```
protected long edgeCount()
```
    Defer to BaseGraph.edges() (based on Graph.successors(Object)) for full edges() implementation.
  - isDirected
```
public boolean isDirected()
```
    Description copied from interface: Graph
    
    Returns true if the edges in this graph are directed. Directed edges connect a source node to a target node, while undirected edges connect a pair of nodes to each other.
  - allowsSelfLoops
```
public boolean allowsSelfLoops()
```
    Description copied from interface: Graph
    
    Returns true if this graph allows self-loops (edges that connect a node to itself). Attempting to add a self-loop to a graph that does not allow them will throw an IllegalArgumentException.
  - nodeOrder
```
public ElementOrder<N> nodeOrder()
```
    Description copied from interface: Graph
    
    Returns the order of iteration for the elements of Graph.nodes().
  - adjacentNodes
```
public java.util.Set<N> adjacentNodes(N node)
```
    Description copied from interface: Graph
    
    Returns the nodes which have an incident edge in common with node in this graph.
  - predecessors
```
public java.util.Set<N> predecessors(N node)
```
    Description copied from interface: Graph
    
    Returns all nodes in this graph adjacent to node which can be reached by traversing node's incoming edges against the direction (if any) of the edge.
    In an undirected graph, this is equivalent to Graph.adjacentNodes(Object).
  - successors
```
public java.util.Set<N> successors(N node)
```
    Description copied from interface: Graph
    
    Returns all nodes in this graph adjacent to node which can be reached by traversing node's outgoing edges in the direction (if any) of the edge.
    In an undirected graph, this is equivalent to Graph.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).
  - degree
```
public int degree(N node)
```
    Description copied from interface: Graph
    
    Returns the count of node's incident edges, counting self-loops twice (equivalently, the number of times an edge touches node).
    For directed graphs, this is equal to inDegree(node) + outDegree(node).
    For undirected graphs, this is equal to incidentEdges(node).size() + (number of self-loops incident to node).
    If the count is greater than Integer.MAX_VALUE, returns Integer.MAX_VALUE.
    
    Specified by:
    
    degree in interface Graph<N>
  - inDegree
```
public int inDegree(N node)
```
    Description copied from interface: Graph
    
    Returns the count of node's incoming edges (equal to predecessors(node).size()) in a directed graph. In an undirected graph, returns the Graph.degree(Object).
    If the count is greater than Integer.MAX_VALUE, returns Integer.MAX_VALUE.
    
    Specified by:
    
    inDegree in interface Graph<N>
  - outDegree
```
public int outDegree(N node)
```
    Description copied from interface: Graph
    
    Returns the count of node's outgoing edges (equal to successors(node).size()) in a directed graph. In an undirected graph, returns the Graph.degree(Object).
    If the count is greater than Integer.MAX_VALUE, returns Integer.MAX_VALUE.
    
    Specified by:
    
    outDegree in interface Graph<N>
  - hasEdgeConnecting
```
public boolean hasEdgeConnecting(N nodeU,
                                 N nodeV)
```
    Description copied from interface: Graph
    
    Returns true if there is an edge directly connecting nodeU to nodeV. This is equivalent to nodes().contains(nodeU) && successors(nodeU).contains(nodeV).
    In an undirected graph, this is equal to hasEdgeConnecting(nodeV, nodeU).
    
    Specified by:
    
    hasEdgeConnecting in interface Graph<N>
  - edges
```
public java.util.Set<EndpointPair<N>> edges()
```
    An implementation of BaseGraph.edges() defined in terms of nodes() and SuccessorsFunction.successors(Object).
  - incidentEdges
```
public java.util.Set<EndpointPair<N>> incidentEdges(N node)
```

Class ImmutableGraph<N>

Method Summary

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

Methods inherited from class java.lang.Object

Methods inherited from interface com.google.common.graph.Graph

Method Detail

copyOf

copyOf

delegate

nodes

edgeCount

isDirected

allowsSelfLoops

nodeOrder

adjacentNodes

predecessors

successors

degree

inDegree

outDegree

hasEdgeConnecting

edges

incidentEdges