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

## Class LazyIterableIterator<T>

- java.lang.Object
- - org.apache.sysds.runtime.instructions.spark.data.LazyIterableIterator<T>

- All Implemented Interfaces:
    Iterable<T>, Iterator<T>

      public abstract class LazyIterableIterator<T>
      extends Object
      implements Iterable<T>, Iterator<T>

  This class is a generic base class for lazy, single pass iterator classes in order to simplify the implementation of lazy iterators for mapPartitions use cases. Note [SPARK-3369], which gives the reasons for backwards compatibility with regard to the iterable API despite Spark's single pass nature.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `LazyIterableIterator(Iterator<T> in)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `hasNext()`
    `Iterator<T>` | `iterator()`
    `T` | `next()`
    `void` | `remove()`

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

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

    - ### Methods inherited from interface java.lang.Iterable

      `forEach, spliterator`

    - ### Methods inherited from interface java.util.Iterator

      `forEachRemaining`

- - ### Constructor Detail

    - #### LazyIterableIterator

          public LazyIterableIterator(Iterator<T> in)

  - ### Method Detail

    - #### iterator

          public Iterator<T> iterator()

      Specified by:
        `iterator` in interface `Iterable<T>`

    - #### hasNext

          public boolean hasNext()

      Specified by:
        `hasNext` in interface `Iterator<T>`

    - #### next

          public T next()

      Specified by:
        `next` in interface `Iterator<T>`

    - #### remove

          public void remove()

      Specified by:
        `remove` in interface `Iterator<T>`

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