Package org.apache.flink.table.runtime.operators.sort

Class BinaryMergeIterator<Entry>

java.lang.Object

org.apache.flink.table.runtime.operators.sort.BinaryMergeIterator<Entry>

All Implemented Interfaces:

MutableObjectIterator<Entry>

public class BinaryMergeIterator<Entry>
extends Object
implements MutableObjectIterator<Entry>

Binary version of MergeIterator. Use RecordComparator to compare record.

Constructor Summary

Constructors

Constructor	Description
BinaryMergeIterator(List<MutableObjectIterator<Entry>> iterators, List<Entry> reusableEntries, Comparator<Entry> comparator)

Method Summary

Modifier and Type	Method	Description
Entry	next()	Gets the next element from the collection.
Entry	next(Entry reuse)	Gets the next element from the collection.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BinaryMergeIterator

public BinaryMergeIterator(List<MutableObjectIterator<Entry>> iterators,
                           List<Entry> reusableEntries,
                           Comparator<Entry> comparator)
                    throws IOException

Throws:

IOException

Method Detail

next

public Entry next(Entry reuse)
           throws IOException

Description copied from interface: MutableObjectIterator

Gets the next element from the collection. The contents of that next element is put into the given reuse object, if the type is mutable.

Specified by:

next in interface MutableObjectIterator<Entry>

Parameters:

reuse - The target object into which to place next element if E is mutable.

Returns:

The filled object or null if the iterator is exhausted.

Throws:

IOException - Thrown, if a problem occurred in the underlying I/O layer or in the serialization / deserialization logic

next

public Entry next()
           throws IOException

Description copied from interface: MutableObjectIterator

Gets the next element from the collection. The iterator implementation must obtain a new instance.

Specified by:

next in interface MutableObjectIterator<Entry>

Returns:

The object or null if the iterator is exhausted.

Throws:

IOException - Thrown, if a problem occurred in the underlying I/O layer or in the serialization / deserialization logic