Package org.apache.sysds.runtime.instructions.spark.data

## Class LineageObject

- java.lang.Object
- - org.apache.sysds.runtime.instructions.spark.data.LineageObject

- Direct Known Subclasses:
    `BroadcastObject`, `DatasetObject`, `RDDObject`

      public abstract class LineageObject
      extends Object

- - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `addLineageChild​(LineageObject lob)` |
    `void` | `decrementNumReferences()` |
    `List<LineageObject>` | `getLineageChilds()` |
    `int` | `getNumReferences()` |
    `boolean` | `hasBackReference()` |
    `void` | `incrementNumReferences()` |
    `void` | `setBackReference​(CacheableData<?> cd)` |

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

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

- - ### Method Detail

    - #### getNumReferences

          public int getNumReferences()

    - #### setBackReference

          public void setBackReference​(CacheableData<?> cd)

    - #### hasBackReference

          public boolean hasBackReference()

    - #### incrementNumReferences

          public void incrementNumReferences()

    - #### decrementNumReferences

          public void decrementNumReferences()

    - #### getLineageChilds

          public List<LineageObject> getLineageChilds()

    - #### addLineageChild

          public void addLineageChild​(LineageObject lob)