Package org.apache.sysds.runtime.matrix.data

## Class CTableMap

- java.lang.Object
- - org.apache.sysds.runtime.matrix.data.CTableMap

-     public class CTableMap
      extends Object

  Ctable map is an abstraction for the hashmap used for ctable's hash group-by because this structure is passed through various interfaces. This makes it easier to (1) exchange the underlying data structure and (2) maintain statistics like max row/column in order to prevent scans during data conversion.

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `CTableMap()` |
    `CTableMap​(LongLongDoubleHashMap.EntryType type)` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `aggregate​(long row, long col, double w)` |
    `Iterator<LongLongDoubleHashMap.ADoubleEntry>` | `getIterator()` |
    `long` | `getMaxColumn()` |
    `long` | `getMaxRow()` |
    `int` | `size()` |
    `MatrixBlock` | `toMatrixBlock​(int rlen, int clen)` |

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

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

- - ### Constructor Detail

    - #### CTableMap

          public CTableMap()

    - #### CTableMap

          public CTableMap​(LongLongDoubleHashMap.EntryType type)

  - ### Method Detail

    - #### size

          public int size()

    - #### getIterator

          public Iterator<LongLongDoubleHashMap.ADoubleEntry> getIterator()

    - #### getMaxRow

          public long getMaxRow()

    - #### getMaxColumn

          public long getMaxColumn()

    - #### aggregate

          public void aggregate​(long row,
                                long col,
                                double w)

    - #### toMatrixBlock

          public MatrixBlock toMatrixBlock​(int rlen,
                                           int clen)