com.mongodb.internal.connection

Class IndexMap

java.lang.Object

com.mongodb.internal.connection.IndexMap

public abstract class IndexMap
extends java.lang.Object

Efficiently maps each integer in a set to another integer in a set, useful for merging bulk write errors when a bulk write must be split into multiple batches. Has the ability to switch from a range-based to a hash-based map depending on the mappings that have been added.

This class should not be considered a part of the public API.

Constructor Summary

Constructors

Constructor and Description
IndexMap()

Method Summary

Modifier and Type	Method and Description
abstract IndexMap	add(int index, int originalIndex) Add a new index to the map
static IndexMap	create() Create an empty index map.
static IndexMap	create(int startIndex, int count) Create an index map that maps the integers 0..count to startIndex..startIndex + count.
abstract int	map(int index) Return the index that the specified index is mapped to.

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexMap

public IndexMap()

Method Detail

create

public static IndexMap create()

Create an empty index map.

Returns:

a new index map

create

public static IndexMap create(int startIndex,
                              int count)

Create an index map that maps the integers 0..count to startIndex..startIndex + count.

Parameters:

startIndex - the start index

count - the count

Returns:

an index map

add

public abstract IndexMap add(int index,
                             int originalIndex)

Add a new index to the map

Parameters:

index - the index

originalIndex - the original index

Returns:

an index map with this index added to it

map

public abstract int map(int index)

Return the index that the specified index is mapped to.

Parameters:

index - the index

Returns:

the index it's mapped to