Graph (Apache TinkerPop 3.3.0 API)

All Superinterfaces:

AutoCloseable, Host

All Known Implementing Classes:

ComputerGraph, EmptyGraph, HadoopGraph, Neo4jGraph, RemoteGraph, StarGraph, TinkerGraph
```
public interface Graph
extends AutoCloseable, Host
```
A Graph is a container object for a collection of Vertex, Edge, VertexProperty, and Property objects.

Author:

Marko A. Rodriguez (http://markorodriguez.com), Stephen Mallette (http://stephen.genoprime.com), Pieter Martin

Nested Class Summary

Nested Classes
Modifier and Type	Interface and Description
`static class`	`Graph.Exceptions` Common exceptions to use with a graph.
`static interface`	`Graph.Features` An interface that represents the capabilities of a `Graph` implementation.
`static class`	`Graph.Hidden` This should only be used by providers to create keys, labels, etc.
`static interface`	`Graph.OptIn` Defines the test suite that the implementer has decided to support and represents publicly as "passing".
`static interface`	`Graph.OptIns` Holds a collection of `Graph.OptIn` enabling multiple `Graph.OptIn` to be applied to a single suite.
`static interface`	`Graph.OptOut` Defines a test in the suite that the implementer does not want to run.
`static interface`	`Graph.OptOuts` Holds a collection of `Graph.OptOut` enabling multiple `Graph.OptOut` to be applied to a single suite.
`static interface`	`Graph.Variables` Graph variables are a set of key/value pairs associated with the graph.

Field Summary

Fields
Modifier and Type Field and Description

static String GRAPH
Configuration key used by GraphFactory} to determine which graph to instantiate.

Fields
Modifier and Type	Field and Description
`static String`	`GRAPH` Configuration key used by `GraphFactory`} to determine which graph to instantiate.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`Vertex`	`addVertex(Object... keyValues)` Add a `Vertex` to the graph given an optional series of key/value pairs.
`default Vertex`	`addVertex(String label)` Add a `Vertex` to the graph with provided vertex label.
`void`	`close()` Closing a `Graph` is equivalent to "shutdown" and implies that no further operations can be executed on the instance.
`GraphComputer`	`compute()` Generate a `GraphComputer` using the default engine of the underlying graph system.
`<C extends GraphComputer> C`	`compute(Class<C> graphComputerClass)` Declare the `GraphComputer` to use for OLAP operations on the graph.
`Configuration`	`configuration()` Get the `org.apache.commons.configuration.Configuration` associated with the construction of this graph.
`Iterator<Edge>`	`edges(Object... edgeIds)` Get the `Edge` objects in this graph with the provided edge ids or `Edge` objects.
`default Graph.Features`	`features()` Gets the `Graph.Features` exposed by the underlying `Graph` implementation.
`default <I extends Io> I`	`io(Io.Builder<I> builder)` Construct a particular `Io` implementation for reading and writing the `Graph` and other data.
`default GraphTraversalSource`	`traversal()` Generate a reusable `GraphTraversalSource` instance.
`default <C extends TraversalSource> C`	`traversal(Class<C> traversalSourceClass)` Generate a `TraversalSource` using the specified `TraversalSource` class.
`Transaction`	`tx()` Configure and control the transactions for those graphs that support this feature.
`Graph.Variables`	`variables()` A collection of global `Graph.Variables` associated with the graph.
`Iterator<Vertex>`	`vertices(Object... vertexIds)` Get the `Vertex` objects in this graph with the provided vertex ids or `Vertex` objects themselves.

- Field Detail
  - GRAPH
```
static final String GRAPH
```
    Configuration key used by GraphFactory} to determine which graph to instantiate.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - addVertex
```
Vertex addVertex(Object... keyValues)
```
    Add a Vertex to the graph given an optional series of key/value pairs. These key/values must be provided in an even number where the odd numbered arguments are String property keys and the even numbered arguments are the related property values.
    
    Parameters:
    
    keyValues - The key/value pairs to turn into vertex properties
    
    Returns:
    
    The newly created vertex
  - addVertex
```
default Vertex addVertex(String label)
```
    Add a Vertex to the graph with provided vertex label.
    
    Parameters:
    
    label - the label of the vertex
    
    Returns:
    
    The newly created labeled vertex
  - compute
```
<C extends GraphComputer> C compute(Class<C> graphComputerClass)
                             throws IllegalArgumentException
```
    Declare the GraphComputer to use for OLAP operations on the graph. If the graph does not support graph computer then an UnsupportedOperationException is thrown.
    
    Parameters:
    
    graphComputerClass - The graph computer class to use.
    
    Returns:
    
    A graph computer for processing this graph
    
    Throws:
    
    IllegalArgumentException - if the provided GraphComputer class is not supported.
  - compute
```
GraphComputer compute()
               throws IllegalArgumentException
```
    Generate a GraphComputer using the default engine of the underlying graph system. This is a shorthand method for the more involved method that uses compute(Class).
    
    Returns:
    
    A default graph computer
    
    Throws:
    
    IllegalArgumentException - if there is no default graph computer
  - traversal
```
default <C extends TraversalSource> C traversal(Class<C> traversalSourceClass)
```
    Generate a TraversalSource using the specified TraversalSource class. The reusable TraversalSource provides methods for spawning Traversal instances.
    
    Type Parameters:
    
    C - The traversal source class
    
    Parameters:
    
    traversalSourceClass - The traversal source class
  - traversal
```
default GraphTraversalSource traversal()
```
    Generate a reusable GraphTraversalSource instance. The GraphTraversalSource provides methods for creating GraphTraversal instances.
    
    Returns:
    
    A graph traversal source
  - vertices
```
Iterator<Vertex> vertices(Object... vertexIds)
```
    Get the Vertex objects in this graph with the provided vertex ids or Vertex objects themselves. If no ids are provided, get all vertices. Note that a vertex identifier does not need to correspond to the actual id used in the graph. It needs to be a bit more flexible than that in that given the Graph.Features around id support, multiple arguments might be applicable here.
    If the graph return true for Graph.Features.ElementFeatures.supportsNumericIds() then it should support filters as with:
    - g.vertices(v)
    - g.vertices(v.id())
    - g.vertices(1)
    - g.vertices(1L)
    - g.vertices(1.0d)
    - g.vertices(1.0f)
    - g.vertices("1")
    If the graph return true for Graph.Features.ElementFeatures.supportsCustomIds() ()} then it should support filters as with:
    - g.vertices(v)
    - g.vertices(v.id())
    - g.vertices(v.id().toString())
    If the graph return true for Graph.Features.ElementFeatures.supportsAnyIds() ()} then it should support filters as with:
    - g.vertices(v)
    - g.vertices(v.id())
    If the graph return true for Graph.Features.ElementFeatures.supportsStringIds() ()} then it should support filters as with:
    - g.vertices(v)
    - g.vertices(v.id().toString())
    - g.vertices("id")
    If the graph return true for Graph.Features.ElementFeatures.supportsStringIds() ()} then it should support filters as with:
    - g.vertices(v)
    - g.vertices(v.id().toString())
    - g.vertices("id")
    Parameters:
    
    vertexIds - the ids of the vertices to get
    
    Returns:
    
    an Iterator of vertices that match the provided vertex ids
  - edges
```
Iterator<Edge> edges(Object... edgeIds)
```
    Get the Edge objects in this graph with the provided edge ids or Edge objects. If no ids are provided, get all edges. Note that an edge identifier does not need to correspond to the actual id used in the graph. It needs to be a bit more flexible than that in that given the Graph.Features around id support, multiple arguments might be applicable here.
    If the graph return true for Graph.Features.ElementFeatures.supportsNumericIds() then it should support filters as with:
    - g.edges(e)
    - g.edges(e.id())
    - g.edges(1)
    - g.edges(1L)
    - g.edges(1.0d)
    - g.edges(1.0f)
    - g.edges("1")
    If the graph return true for Graph.Features.ElementFeatures.supportsCustomIds() ()} then it should support filters as with:
    - g.edges(e)
    - g.edges(e.id())
    - g.edges(e.id().toString())
    If the graph return true for Graph.Features.ElementFeatures.supportsAnyIds() ()} then it should support filters as with:
    - g.edges(e)
    - g.edges(e.id())
    If the graph return true for Graph.Features.ElementFeatures.supportsStringIds() ()} then it should support filters as with:
    - g.edges(e)
    - g.edges(e.id().toString())
    - g.edges("id")
    Parameters:
    
    edgeIds - the ids of the edges to get
    
    Returns:
    
    an Iterator of edges that match the provided edge ids
  - tx
```
Transaction tx()
```
    Configure and control the transactions for those graphs that support this feature. Note that this method does not indicate the creation of a "transaction" object. A Transaction in the TinkerPop context is a transaction "factory" or "controller" that helps manage transactions owned by the underlying graph database.
  - close
```
void close()
    throws Exception
```
    Closing a Graph is equivalent to "shutdown" and implies that no further operations can be executed on the instance. Users should consult the documentation of the underlying graph database implementation for what this "shutdown" will mean in general and, if supported, how open transactions are handled. It will typically be the end user's responsibility to synchronize the thread that calls close() with other threads that are accessing open transactions. In other words, be sure that all work performed on the Graph instance is complete prior to calling this method.
    TinkerPop does not enforce any particular semantics with respect to "shutdown". It is up to the graph provider to decide what this method will do.
    
    Specified by:
    
    close in interface AutoCloseable
    
    Throws:
    
    Exception
  - io
```
default <I extends Io> I io(Io.Builder<I> builder)
```
    Construct a particular Io implementation for reading and writing the Graph and other data. End-users will "select" the Io implementation that they want to use by supplying the Io.Builder that constructs it. In this way, Graph vendors can supply their IoRegistry to that builder thus allowing for custom serializers to be auto-configured into the Io instance. Registering custom serializers is particularly useful for those graphs that have complex types for Element identifiers.
    For those graphs that do not need to register any custom serializers, the default implementation should suffice. If the default is overridden, take care to register the current graph via the Io.Builder.graph(Graph) method.
  - variables
```
Graph.Variables variables()
```
    A collection of global Graph.Variables associated with the graph. Variables are used for storing metadata about the graph.
    
    Returns:
    
    The variables associated with this graph
  - configuration
```
Configuration configuration()
```
    Get the org.apache.commons.configuration.Configuration associated with the construction of this graph. Whatever configuration was passed to GraphFactory#open(org.apache.commons.configuration.Configuration) is what should be returned by this method.
    
    Returns:
    
    the configuration used during graph construction.
  - features
```
default Graph.Features features()
```
    Gets the Graph.Features exposed by the underlying Graph implementation.

Interface Graph

Nested Class Summary

Field Summary

Method Summary

Field Detail

GRAPH

Method Detail

addVertex

addVertex

compute

compute

traversal

traversal

vertices

edges

tx

close

io

variables

configuration

features