CTableMap (SystemDS 2.2.1 API)

```
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.

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

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)`

public CTableMap(LongLongDoubleHashMap.EntryType type)

public Iterator<LongLongDoubleHashMap.ADoubleEntry> getIterator()

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

public MatrixBlock toMatrixBlock(int rlen,
                                 int clen)

Class CTableMap