Package org.apache.iceberg.util

Class PartitionMap<V>

java.lang.Object

java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

org.apache.iceberg.util.PartitionMap<V>

Type Parameters:

V - the type of values

All Implemented Interfaces:

java.util.Map<Pair<java.lang.Integer,StructLike>,V>

public class PartitionMap<V>
extends java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

A map that uses a pair of spec ID and partition tuple as keys.

This implementation internally stores provided partition tuples in StructLikeMap for consistent hashing and equals behavior. This ensures that objects of different types that represent the same structs are treated as equal keys in the map.

Note: This map is not designed for concurrent modification by multiple threads. However, it supports safe concurrent reads, assuming there are no concurrent writes.

Note: This map does not support null pairs but supports null as partition tuples.

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

java.util.AbstractMap.SimpleEntry<K extends java.lang.Object,V extends java.lang.Object>, java.util.AbstractMap.SimpleImmutableEntry<K extends java.lang.Object,V extends java.lang.Object>

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K extends java.lang.Object,V extends java.lang.Object>

Method Summary

Modifier and Type	Method	Description
void	clear()
V	computeIfAbsent(int specId, StructLike struct, java.util.function.Supplier<V> valueSupplier)
boolean	containsKey(int specId, StructLike struct)
boolean	containsKey(java.lang.Object key)
boolean	containsValue(java.lang.Object value)
static <T> PartitionMap<T>	create(java.util.Map<java.lang.Integer,PartitionSpec> specs)
java.util.Set<java.util.Map.Entry<Pair<java.lang.Integer,StructLike>,V>>	entrySet()
V	get(int specId, StructLike struct)
V	get(java.lang.Object key)
boolean	isEmpty()
java.util.Set<Pair<java.lang.Integer,StructLike>>	keySet()
V	put(int specId, StructLike struct, V value)
V	put(Pair<java.lang.Integer,StructLike> key, V value)
void	putAll(java.util.Map<? extends Pair<java.lang.Integer,StructLike>,? extends V> otherMap)
V	remove(java.lang.Object key)
V	removeKey(int specId, StructLike struct)
int	size()
java.lang.String	toString()
java.util.Collection<V>	values()

Methods inherited from class java.util.AbstractMap

clone, equals, hashCode

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Method Detail

create

public static <T> PartitionMap<T> create(java.util.Map<java.lang.Integer,PartitionSpec> specs)

size

public int size()

Specified by:

size in interface java.util.Map<Pair<java.lang.Integer,StructLike>,V>

Overrides:

size in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map<Pair<java.lang.Integer,StructLike>,V>

Overrides:

isEmpty in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

containsKey

public boolean containsKey(java.lang.Object key)

Specified by:

containsKey in interface java.util.Map<Pair<java.lang.Integer,StructLike>,V>

Overrides:

containsKey in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

containsKey

public boolean containsKey(int specId,
                           StructLike struct)

containsValue

public boolean containsValue(java.lang.Object value)

Specified by:

containsValue in interface java.util.Map<Pair<java.lang.Integer,StructLike>,V>

Overrides:

containsValue in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

get

public V get(java.lang.Object key)

Specified by:

get in interface java.util.Map<Pair<java.lang.Integer,StructLike>,V>

Overrides:

get in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

get

public V get(int specId,
             StructLike struct)

put

public V put(Pair<java.lang.Integer,StructLike> key,
             V value)

Specified by:

put in interface java.util.Map<Pair<java.lang.Integer,StructLike>,V>

Overrides:

put in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

put

public V put(int specId,
             StructLike struct,
             V value)

putAll

public void putAll(java.util.Map<? extends Pair<java.lang.Integer,StructLike>,? extends V> otherMap)

Specified by:

putAll in interface java.util.Map<Pair<java.lang.Integer,StructLike>,V>

Overrides:

putAll in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

remove

public V remove(java.lang.Object key)

Specified by:

remove in interface java.util.Map<Pair<java.lang.Integer,StructLike>,V>

Overrides:

remove in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

removeKey

public V removeKey(int specId,
                   StructLike struct)

clear

public void clear()

Specified by:

clear in interface java.util.Map<Pair<java.lang.Integer,StructLike>,V>

Overrides:

clear in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

keySet

public java.util.Set<Pair<java.lang.Integer,StructLike>> keySet()

Specified by:

keySet in interface java.util.Map<Pair<java.lang.Integer,StructLike>,V>

Overrides:

keySet in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

values

public java.util.Collection<V> values()

Specified by:

values in interface java.util.Map<Pair<java.lang.Integer,StructLike>,V>

Overrides:

values in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

entrySet

public java.util.Set<java.util.Map.Entry<Pair<java.lang.Integer,StructLike>,V>> entrySet()

Specified by:

entrySet in interface java.util.Map<Pair<java.lang.Integer,StructLike>,V>

Specified by:

entrySet in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>

computeIfAbsent

public V computeIfAbsent(int specId,
                         StructLike struct,
                         java.util.function.Supplier<V> valueSupplier)

toString

public java.lang.String toString()

Overrides:

toString in class java.util.AbstractMap<Pair<java.lang.Integer,StructLike>,V>