GraphManager (Apache TinkerPop 3.4.0-SNAPSHOT API)

All Known Implementing Classes:

DefaultGraphManager
```
public interface GraphManager
```
The GraphManager interface allows for reference tracking of Graph references through a Map<String, Graph>; the interface plugs into the lifeline of gremlin script executions, meaning that commit() and rollback() will be called on all graphs stored in the graph reference tracker at the end of the script executions; you may want to implement this interface if you want to define a custom graph instantiation/closing mechanism; note that the interface also defines similar features for TraversalSource objects.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`commit(Set<String> graphSourceNamesToCloseTxOn)` Selectively commit transactions on the specified graphs or the graphs of traversal sources.
`void`	`commitAll()` Commit transactions across all `Graph` objects.
`Bindings`	`getAsBindings()` Get the `Graph` and `TraversalSource` list as a set of bindings.
`Graph`	`getGraph(String graphName)` Get `Graph` instance whose name matches `graphName`.
`Set<String>`	`getGraphNames()` Get a `Set` of `String` graphNames corresponding to names stored in the graph's reference tracker.
`TraversalSource`	`getTraversalSource(String traversalSourceName)` Get `TraversalSource` instance whose name matches `traversalSourceName`
`Set<String>`	`getTraversalSourceNames()` Get a `Set` of the names of the the stored `TraversalSource` instances.
`Graph`	`openGraph(String graphName, Function<String,Graph> supplier)` Implementation that allows for custom graph-opening implementations; if the `Map` tracking graph references has a `Graph` object corresponding to the graph name, then we return that `Graph`-- otherwise, we use the custom `Function` to instantiate a new `Graph`, add it to the `Map` tracking graph references, and return said `Graph`.
`void`	`putGraph(String graphName, Graph g)` Add or update the specified `Graph` with the specified name to `Map<String, Graph>` .
`void`	`putTraversalSource(String tsName, TraversalSource ts)` Add or update the specified `TraversalSource` with the specified name.
`Graph`	`removeGraph(String graphName)` Implementation that allows for custom graph closing implementations; this method should remove the `Graph` from the `GraphManager`.
`TraversalSource`	`removeTraversalSource(String tsName)` Remove `TraversalSource` by name.
`void`	`rollback(Set<String> graphSourceNamesToCloseTxOn)` Selectively rollback transactions on the specified graphs or the graphs of traversal sources.
`void`	`rollbackAll()` Rollback transactions across all `Graph` objects.

- Method Detail
  - getGraphNames
```
Set<String> getGraphNames()
```
    Get a Set of String graphNames corresponding to names stored in the graph's reference tracker.
  - getGraph
```
Graph getGraph(String graphName)
```
    Get Graph instance whose name matches graphName.
    
    Returns:
    
    Graph if exists, else null
  - putGraph
```
void putGraph(String graphName,
              Graph g)
```
    Add or update the specified Graph with the specified name to Map<String, Graph> .
  - getTraversalSourceNames
```
Set<String> getTraversalSourceNames()
```
    Get a Set of the names of the the stored TraversalSource instances.
  - getTraversalSource
```
TraversalSource getTraversalSource(String traversalSourceName)
```
    Get TraversalSource instance whose name matches traversalSourceName
    
    Returns:
    
    TraversalSource if exists, else null
  - putTraversalSource
```
void putTraversalSource(String tsName,
                        TraversalSource ts)
```
    Add or update the specified TraversalSource with the specified name.
  - removeTraversalSource
```
TraversalSource removeTraversalSource(String tsName)
```
    Remove TraversalSource by name.
  - getAsBindings
```
Bindings getAsBindings()
```
    Get the Graph and TraversalSource list as a set of bindings.
  - rollbackAll
```
void rollbackAll()
```
    Rollback transactions across all Graph objects.
  - rollback
```
void rollback(Set<String> graphSourceNamesToCloseTxOn)
```
    Selectively rollback transactions on the specified graphs or the graphs of traversal sources.
  - commitAll
```
void commitAll()
```
    Commit transactions across all Graph objects.
  - commit
```
void commit(Set<String> graphSourceNamesToCloseTxOn)
```
    Selectively commit transactions on the specified graphs or the graphs of traversal sources.
  - openGraph
```
Graph openGraph(String graphName,
                Function<String,Graph> supplier)
```
    Implementation that allows for custom graph-opening implementations; if the Map tracking graph references has a Graph object corresponding to the graph name, then we return that Graph-- otherwise, we use the custom Function to instantiate a new Graph, add it to the Map tracking graph references, and return said Graph.
  - removeGraph
```
Graph removeGraph(String graphName)
           throws Exception
```
    Implementation that allows for custom graph closing implementations; this method should remove the Graph from the GraphManager.
    
    Throws:
    
    Exception

Interface GraphManager

Method Summary

Method Detail

getGraphNames

getGraph

putGraph

getTraversalSourceNames

getTraversalSource

putTraversalSource

removeTraversalSource

getAsBindings

rollbackAll

rollback

commitAll

commit

openGraph

removeGraph