org.apache.sysds.runtime.data

## Class DenseBlockDRB

- java.lang.Object
- - org.apache.sysds.runtime.data.DenseBlock
  - - org.apache.sysds.runtime.data.DenseBlockDRB

- All Implemented Interfaces:
    Serializable
  Direct Known Subclasses:
    DenseBlockBool, DenseBlockFP32, DenseBlockFP64, DenseBlockInt32, DenseBlockInt64, DenseBlockString

      public abstract class DenseBlockDRB
      extends DenseBlock

  See Also:
    Serialized Form

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class org.apache.sysds.runtime.data.DenseBlock

      `DenseBlock.Type`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `int` | `blockSize()` Get the number of rows per block, except last one.
    `int` | `blockSize(int bix)` Get the number of rows of the given block.
    `long` | `countNonZeros()` Compute the number of non-zero values, which potentially makes a full pass over the underlying blocks.
    `int` | `countNonZeros(int r)` Compute the number of non-zero values for the given row, which potentially makes a full pass over the underlying row.
    `long` | `countNonZeros(int rl, int ru, int ol, int ou)` Compute the number of non-zero values, which potentially makes a full pass over the underlying blocks in the row range.
    `boolean` | `isContiguous()` Indicates if the dense block has a single underlying block, i.e., if numBlocks==1.
    `boolean` | `isContiguous(int rl, int ru)` Indicates if the dense block has a single underlying block for the given row range.
    `int` | `numBlocks()` Get the number of allocated blocks.
    `int` | `pos(int r)` Get the position for a given row within its associated block.
    `int` | `pos(int[] ix)` Get the position for a given cell within the associated block.
    `int` | `pos(int r, int c)` Get the position for a given row and column within the associated block.
    `void` | `reset(int rlen, int[] odims, double v)` Resets the dense block by setting the given value.
    `DenseBlock` | `set(double v)` Set the given value for the entire dense block (fill).
    `DenseBlock` | `set(int rl, int ru, int cl, int cu, double v)` Set the given value for an entire index range of the dense block (fill).
    `int` | `size(int bix)` Get the length of the given block.

    - ### Methods inherited from class org.apache.sysds.runtime.data.DenseBlock

      `capacity, get, get, getCumODims, getDim, getLong, getNextIndexes, getString, incr, incr, index, isNumeric, numDims, numRows, reset, reset, reset, reset, reset, reset, set, set, set, set, set, set, set, set, set, set, size, toString, values, valuesAt`

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

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

- - ### Method Detail

    - #### reset

          public void reset(int rlen,
                            int[] odims,
                            double v)

      Description copied from class: `DenseBlock`
      Resets the dense block by setting the given value.
      Specified by:
        `reset` in class `DenseBlock`
      Parameters:
        `rlen` - number of rows
        `odims` - other dimensions
        `v` - value

    - #### numBlocks

          public int numBlocks()

      Description copied from class: `DenseBlock`
      Get the number of allocated blocks.
      Specified by:
        `numBlocks` in class `DenseBlock`
      Returns:
        number of blocks

    - #### blockSize

          public int blockSize()

      Description copied from class: `DenseBlock`
      Get the number of rows per block, except last one.
      Specified by:
        `blockSize` in class `DenseBlock`
      Returns:
        number of rows in block

    - #### blockSize

          public int blockSize(int bix)

      Description copied from class: `DenseBlock`
      Get the number of rows of the given block.
      Specified by:
        `blockSize` in class `DenseBlock`
      Parameters:
        `bix` - block index
      Returns:
        number of rows in block

    - #### isContiguous

          public boolean isContiguous()

      Description copied from class: `DenseBlock`
      Indicates if the dense block has a single underlying block, i.e., if numBlocks==1.
      Specified by:
        `isContiguous` in class `DenseBlock`
      Returns:
        true if single block

    - #### isContiguous

          public boolean isContiguous(int rl,
                                      int ru)

      Description copied from class: `DenseBlock`
      Indicates if the dense block has a single underlying block for the given row range.
      Specified by:
        `isContiguous` in class `DenseBlock`
      Parameters:
        `rl` - row lower index
        `ru` - row upper index (inclusive)
      Returns:
        true if single block in row range

    - #### size

          public int size(int bix)

      Description copied from class: `DenseBlock`
      Get the length of the given block.
      Specified by:
        `size` in class `DenseBlock`
      Parameters:
        `bix` - block index
      Returns:
        length

    - #### pos

          public int pos(int r)

      Description copied from class: `DenseBlock`
      Get the position for a given row within its associated block.
      Specified by:
        `pos` in class `DenseBlock`
      Parameters:
        `r` - row index
      Returns:
        block position

    - #### pos

          public int pos(int r,
                         int c)

      Description copied from class: `DenseBlock`
      Get the position for a given row and column within the associated block.
      Specified by:
        `pos` in class `DenseBlock`
      Parameters:
        `r` - row index
        `c` - column index
      Returns:
        block position

    - #### pos

          public int pos(int[] ix)

      Description copied from class: `DenseBlock`
      Get the position for a given cell within the associated block.
      Specified by:
        `pos` in class `DenseBlock`
      Parameters:
        `ix` - cell indexes
      Returns:
        block position

    - #### countNonZeros

          public long countNonZeros()

      Description copied from class: `DenseBlock`
      Compute the number of non-zero values, which potentially makes a full pass over the underlying blocks.
      Specified by:
        `countNonZeros` in class `DenseBlock`
      Returns:
        number of non-zeros

    - #### countNonZeros

          public int countNonZeros(int r)

      Description copied from class: `DenseBlock`
      Compute the number of non-zero values for the given row, which potentially makes a full pass over the underlying row.
      Specified by:
        `countNonZeros` in class `DenseBlock`
      Parameters:
        `r` - row index
      Returns:
        number of non-zeros

    - #### countNonZeros

          public long countNonZeros(int rl,
                                    int ru,
                                    int ol,
                                    int ou)

      Description copied from class: `DenseBlock`
      Compute the number of non-zero values, which potentially makes a full pass over the underlying blocks in the row range.
      Specified by:
        `countNonZeros` in class `DenseBlock`
      Parameters:
        `rl` - row lower index
        `ru` - row upper index (exclusive)
        `ol` - column lower index
        `ou` - column upper index (exclusive)
      Returns:
        number of non-zeros

    - #### set

          public DenseBlock set(int rl,
                                int ru,
                                int cl,
                                int cu,
                                double v)

      Description copied from class: `DenseBlock`
      Set the given value for an entire index range of the dense block (fill).
      Specified by:
        `set` in class `DenseBlock`
      Parameters:
        `rl` - row lower index
        `ru` - row upper index (exclusive)
        `cl` - column lower index
        `cu` - column upper index (exclusive)
        `v` - value
      Returns:
        self

    - #### set

          public DenseBlock set(double v)

      Description copied from class: `DenseBlock`
      Set the given value for the entire dense block (fill).
      Specified by:
        `set` in class `DenseBlock`
      Parameters:
        `v` - value
      Returns:
        self

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