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Posted to dev@tinkerpop.apache.org by "David Pitera (JIRA)" <ji...@apache.org> on 2017/03/06 15:56:32 UTC
[jira] [Created] (TINKERPOP-1646) Support custom implementor
specific graph management
David Pitera created TINKERPOP-1646:
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Summary: Support custom implementor specific graph management
Key: TINKERPOP-1646
URL: https://issues.apache.org/jira/browse/TINKERPOP-1646
Project: TinkerPop
Issue Type: New Feature
Reporter: David Pitera
Priority: Minor
Currently, Tinkerpop uses the [GraphManager](https://github.com/apache/tinkerpop/blob/master/gremlin-server/src/main/java/org/apache/tinkerpop/gremlin/server/GraphManager.java) to handle graph management and store references to graph objects.
I propose that we change the graphManager in three ways:
1. The graphManager should be an interface, and the existing functionality should be moved into a `BasicGraphManager`. This allows the implementor to design their own graph manager so suit their graph management needs. Furthermore, this will need to allow the implementor to supply a graphManager class in the YAML, so the [Settings](https://github.com/apache/tinkerpop/blob/master/gremlin-server/src/main/java/org/apache/tinkerpop/gremlin/server/Settings.java) must support a graphmanager, which of course can default to the `BasicGraphManager`.
2. We define additional methods on the interface to improve how the graphManager is used in existing Tinkerpop code. For example, [here](https://github.com/apache/tinkerpop/blob/master/gremlin-server/src/main/java/org/apache/tinkerpop/gremlin/server/util/ServerGremlinExecutor.java#L156) we mutate an object directly outside the scope of a getter or setter on said object.
3. We define additional methods on the interface to allow for custom graph opening implementation:
```
/**
* Implementation that allows for custom graph-opening implementations.
*/
public Graph openGraph(String graphName, Supplier<Graph> supplier);
```
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