Package org.apache.tinkerpop.gremlin.structure

Interface Graph.Features.GraphFeatures

    • Method Detail

      • supportsComputer

        default boolean supportsComputer()
        Determines if the Graph implementation supports GraphComputer based processing.

      • supportsPersistence

        default boolean supportsPersistence()
        Determines if the Graph implementation supports persisting it's contents natively to disk. This feature does not refer to every graph's ability to write to disk via the Gremlin IO packages (.e.g. GraphML), unless the graph natively persists to disk via those options somehow. For example, TinkerGraph does not support this feature as it is a pure in-sideEffects graph.

      • supportsConcurrentAccess

        default boolean supportsConcurrentAccess()
        Determines if the Graph implementation supports more than one connection to the same instance at the same time. For example, Neo4j embedded does not support this feature because concurrent access to the same database files by multiple instances is not possible. However, Neo4j HA could support this feature as each new Graph instance coordinates with the Neo4j cluster allowing multiple instances to operate on the same database.

      • supportsTransactions

        default boolean supportsTransactions()
        Determines if the Graph implementations supports transactions.

      • supportsThreadedTransactions

        default boolean supportsThreadedTransactions()
        Determines if the Graph implementation supports threaded transactions which allow a transaction to be executed across multiple threads via Transaction.createThreadedTx().

      • supportsIoRead

        default boolean supportsIoRead()
        Determines if the Graph implementations supports read operations as executed with the GraphTraversalSource.io(String) step. Graph implementations will generally support this by default as any graph that can support direct mutation through the Structure API will by default accept data from the standard TinkerPop GraphReader implementations. However, some graphs like HadoopGraph don't accept direct mutations but can still do reads from that io() step.

      • supportsIoWrite

        default boolean supportsIoWrite()
        Determines if the Graph implementations supports write operations as executed with the GraphTraversalSource.io(String) step. Graph implementations will generally support this by default given the standard TinkerPop GraphWriter implementations. However, some graphs like HadoopGraph will use a different approach to handle writes.

      • supportsOrderabilitySemantics

        default boolean supportsOrderabilitySemantics()
        Determines if the Graph implementation supports total universal orderability per the Gremlin orderability semantics.

      • supportsServiceCall

        default boolean supportsServiceCall()
        Determines if the Graph implementation supports the service call feature.