org.apache.jmeter.report.core

## Interface SampleComparator

- All Known Implementing Classes:
    FieldSampleComparator

      public interface SampleComparator

  Defines a comparator for `Sample` instances
  Since:
    3.0

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `long` | `compare(Sample s1, Sample s2)` Compares to sample
    `void` | `initialize(SampleMetadata metadata)` Initializes the comparator with the `SampleMetadata` of the samples to be compared.

- - ### Method Detail

    - #### compare

          long compare(Sample s1,
                       Sample s2)

      Compares to sample

      Must return an long integer that define the relational order of the 2 compared samples:

      - Negative long integer : s1 is lower than s2
      - Zero long integer : s1 is strictly equal to s2
      - Positive long integer : s1 is greater than s2
      Parameters:
        `s1` - The first sample to be compared
        `s2` - The second sample to compared
      Returns:
        A negative is `s1 < s2`, `0 if s1 = s2`, a positive integer if `s1 > s2`

    - #### initialize

          void initialize(SampleMetadata metadata)

      Initializes the comparator with the `SampleMetadata` of the samples to be compared.

      This function is invoked before any call to the`compare` service.

      Not that this function is the place to get sample column indexes for better performance

      Parameters:
        `metadata` - The metadata of the sample to be compared by this instance

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