Package org.apache.tinkerpop.gremlin.process.computer.util

Class MapMemory

java.lang.Object
org.apache.tinkerpop.gremlin.process.computer.util.MapMemory
All Implemented Interfaces:
Serializable, Memory, Memory.Admin
public final class MapMemory extends Object implements Memory.Admin, Serializable
Author:
Marko A. Rodriguez (http://markorodriguez.com)
See Also:

  • Constructor Details

    • MapMemory

      public MapMemory()

    • MapMemory

      public MapMemory(Memory otherMemory)

  • Method Details

    • addVertexProgramMemoryComputeKeys

      public void addVertexProgramMemoryComputeKeys(VertexProgram<?> vertexProgram)

    • addMapReduceMemoryKey

      public void addMapReduceMemoryKey(MapReduce mapReduce)

    • keys

      public Set<String> keys()
      Description copied from interface: Memory
      The set of keys currently associated with this memory.
      Specified by:
      keys in interface Memory
      Returns:
      the memory's key set.

    • get

      public <R> R get(String key) throws IllegalArgumentException
      Description copied from interface: Memory
      Get the value associated with the provided key.
      Specified by:
      get in interface Memory
      Type Parameters:
      R - the type of the value
      Parameters:
      key - the key of the value
      Returns:
      the value
      Throws:
      IllegalArgumentException - is thrown if the key does not exist

    • set

      public void set(String key, Object value)
      Specified by:
      set in interface Memory

    • getIteration

      public int getIteration()
      Description copied from interface: Memory
      Get the current iteration number.
      Specified by:
      getIteration in interface Memory
      Returns:
      the current iteration

    • getRuntime

      public long getRuntime()
      Description copied from interface: Memory
      Get the amount of milliseconds the GraphComputer has been executing thus far.
      Specified by:
      getRuntime in interface Memory
      Returns:
      the total time in milliseconds

    • add

      public void add(String key, Object value)
      Description copied from interface: Memory
      Set the value of the provided key. This is typically called in setup() and/or terminate() of the VertexProgram. If this is called during execute(), there is no guarantee as to the ultimately stored value as call order is indeterminate. It is up to the implementation to determine the states in which this method can be called.
      Specified by:
      add in interface Memory
      Parameters:
      key - they key to set a value for
      value - the value to set for the key

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • incrIteration

      public void incrIteration()
      Specified by:
      incrIteration in interface Memory.Admin

    • setIteration

      public void setIteration(int iteration)
      Specified by:
      setIteration in interface Memory.Admin

    • setRuntime

      public void setRuntime(long runtime)
      Specified by:
      setRuntime in interface Memory.Admin