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 and Description
    `CTableMap()`
    `CTableMap(LongLongDoubleHashMap.EntryType type)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and 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)

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