org.apache.tinkerpop.gremlin.process.traversal.util

## Interface Metrics

- All Known Implementing Classes:
    ImmutableMetrics, MutableMetrics

      public interface Metrics

  Holds metrics data; typically for .profile()-step analysis. Metrics may be nested. Nesting enables the ability to capture explicit metrics for multiple distinct operations. Annotations are used to store miscellaneous notes that might be useful to a developer when examining results, such as index coverage for Steps in a Traversal.
  Author:
    Bob Briody (http://bobbriody.com)

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `Object` | `getAnnotation(String key)` Obtain the annotation with the specified key.
    `Map<String,Object>` | `getAnnotations()` Obtain the annotations for this Metrics.
    `Long` | `getCount(String countKey)` Get the count for the corresponding countKey.
    `Map<String,Long>` | `getCounts()` Get the map of all counters.
    `long` | `getDuration(TimeUnit units)` Get the duration of execution time taken.
    `String` | `getId()` Id of this Metrics.
    `String` | `getName()` Name of this Metrics.
    `Collection<? extends Metrics>` | `getNested()` Get the nested Metrics objects.
    `Metrics` | `getNested(String metricsId)` Get a nested Metrics object by Id.

- - ### Method Detail

    - #### getDuration

          long getDuration(TimeUnit units)

      Get the duration of execution time taken.

    - #### getCount

          Long getCount(String countKey)

      Get the count for the corresponding countKey. Returns null if countKey does not exist.
      Parameters:
        `countKey` - key for counter to get.

    - #### getCounts

          Map<String,Long> getCounts()

      Get the map of all counters. This method copies the internal map.
      Returns:
        a Map where the key is the counter ID and the value is the counter value.

    - #### getName

          String getName()

      Name of this Metrics.
      Returns:
        name of this Metrics.

    - #### getId

          String getId()

      Id of this Metrics.
      Returns:
        id of this Metrics.

    - #### getNested

          Collection<? extends Metrics> getNested()

      Get the nested Metrics objects. Metrics will be ordered in the order they were inserted.
      Returns:
        the nested Metrics objects.

    - #### getNested

          Metrics getNested(String metricsId)

      Get a nested Metrics object by Id.
      Returns:
        a nested Metrics object.

    - #### getAnnotations

          Map<String,Object> getAnnotations()

      Obtain the annotations for this Metrics. Values may be of type String or Number.
      Returns:
        the annotations for this Metrics. Modifications to the returned object are persisted in the original.

    - #### getAnnotation

          Object getAnnotation(String key)

      Obtain the annotation with the specified key. Values may be of type String or Number.
      Parameters:
        `key` - key of the annotation to obtain.

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