Package org.apache.sis.util.collection

Class DerivedMap.Invertible<SK,SV,K,V>

java.lang.Object

java.util.AbstractMap<K,V>

org.apache.sis.util.collection.DerivedMap<SK,SV,K,V>

org.apache.sis.util.collection.DerivedMap.InvertibleKey<SK,SV,K,V>

org.apache.sis.util.collection.DerivedMap.Invertible<SK,SV,K,V>

Type Parameters:

SK - the type of keys in the storage map.

SV - the type of values in the storage map.

K - the type of keys in this map.

V - the type of values in this map.

All Implemented Interfaces:

Serializable, Function<Map.Entry<SK,SV>,Map.Entry<K,V>>, Map<K,V>, ObjectConverter<Map.Entry<SK,SV>,Map.Entry<K,V>>

Enclosing class:

DerivedMap<SK,SV,K,V>

private static final class DerivedMap.Invertible<SK,SV,K,V>
extends DerivedMap.InvertibleKey<SK,SV,K,V>

A DerivedMap used when both the DerivedMap.keyConverter and DerivedMap.valueConverter are invertible. Availability of the inverse conversion allows us to delegate some operations to the DerivedMap.storage map instead of iterating over all entries.

Nested Class Summary

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

AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

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

Map.Entry<K extends Object,V extends Object>

Field Summary

Fields

Modifier and Type	Field	Description
private ObjectConverter<Map.Entry<K,V>,Map.Entry<SK,SV>>	inverse	The inverse of this entry converter.
private static final long	serialVersionUID
private final ObjectConverter<V,SV>	valueInverse	The inverse of DerivedMap.valueConverter.

Fields inherited from class org.apache.sis.util.collection.DerivedMap.InvertibleKey

keyInverse

Fields inherited from class org.apache.sis.util.collection.DerivedMap

keyConverter, storage, valueConverter

Constructor Summary

Constructors

Constructor	Description
Invertible(Map<SK,SV> storage, ObjectConverter<SK,K> keyConverter, ObjectConverter<SV,V> valueConverter)

Method Summary

Modifier and Type	Method	Description
boolean	containsValue(Object value)
ObjectConverter<Map.Entry<K,V>,Map.Entry<SK,SV>>	inverse()	To be defined in the DerivedMap.Invertible sub-class only.
V	put(K key, V value)	Associates the specified value with the specified key in this map.

Methods inherited from class org.apache.sis.util.collection.DerivedMap.InvertibleKey

containsKey, get, remove

Methods inherited from class org.apache.sis.util.collection.DerivedMap

apply, create, entrySet, getSourceClass, getTargetClass, isEmpty, keySet, properties, put, size

Methods inherited from class java.util.AbstractMap

clear, clone, equals, hashCode, putAll, toString, values

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Function

andThen, compose

Methods inherited from interface java.util.Map

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

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

valueInverse

private final ObjectConverter<V,SV> valueInverse

The inverse of DerivedMap.valueConverter.

inverse

private transient ObjectConverter<Map.Entry<K,V>,Map.Entry<SK,SV>> inverse

The inverse of this entry converter.

Constructor Details

Invertible

Invertible(Map<SK,SV> storage,
 ObjectConverter<SK,K> keyConverter,
 ObjectConverter<SV,V> valueConverter)

Method Details

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<SK,SV>

Overrides:

containsValue in class AbstractMap<K,V>

put

public V put(K key,
 V value)

Description copied from class: DerivedMap

Associates the specified value with the specified key in this map.

Specified by:

put in interface Map<SK,SV>

Overrides:

put in class DerivedMap<SK,SV,K,V>

Parameters:

key - key with which the specified value is to be associated.

value - value to be associated with the specified key.

Returns:

previous value associated with specified key, or null if there was no mapping for key.

inverse

public ObjectConverter<Map.Entry<K,V>,Map.Entry<SK,SV>> inverse()

Description copied from class: DerivedMap

To be defined in the DerivedMap.Invertible sub-class only.

Specified by:

inverse in interface ObjectConverter<SK,SV>

Overrides:

inverse in class DerivedMap<SK,SV,K,V>

Returns:

a converter for converting instances of T back to instances of S.

See Also:

• FunctionProperty.INVERTIBLE