Package org.apache.sysds.hops.codegen.template

## Class TemplateCell.HopInputComparator

- java.lang.Object
- - org.apache.sysds.hops.codegen.template.TemplateCell.HopInputComparator

- All Implemented Interfaces:
    `Comparator<Hop>`
  Enclosing class:
    TemplateCell

      public static class TemplateCell.HopInputComparator
      extends Object
      implements Comparator<Hop>

  Comparator to order input hops of the cell template. We try to order matrices-vectors-scalars via sorting by number of cells and for equal number of cells by sparsity to prefer sparse inputs as the main input for sparsity exploitation.

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `HopInputComparator()` |
    `HopInputComparator​(Hop driver)` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `int` | `compare​(Hop h1, Hop h2)` |

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

    - ### Methods inherited from interface java.util.Comparator

      `equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong`

- - ### Constructor Detail

    - #### HopInputComparator

          public HopInputComparator()

    - #### HopInputComparator

          public HopInputComparator​(Hop driver)

  - ### Method Detail

    - #### compare

          public int compare​(Hop h1,
                             Hop h2)

      Specified by:
        `compare` in interface `Comparator<Hop>`