Package com.electronwill.nightconfig.core.utils

Class TransformingCollection<InternalV,ExternalV>

java.lang.Object

com.electronwill.nightconfig.core.utils.TransformingCollection<InternalV,ExternalV>

All Implemented Interfaces:

Iterable<ExternalV>, Collection<ExternalV>

Direct Known Subclasses:

TransformingList, TransformingSet

public class TransformingCollection<InternalV,ExternalV>
extends Object
implements Collection<ExternalV>

A TransformingCollection applies "just in time" transformations to a Collection<InternalV> in order to make it like a Collection<ExternalV>.

The transformations are applied "just in time", that is, the values are converted only when they are used, not during the construction of the TransformingCollection.

See Also:

• TransformingMap

Field Summary

Fields

Modifier and Type	Field	Description
protected final Collection<InternalV>	internalCollection
protected final Function<? super InternalV,? extends ExternalV>	readTransformation
protected final Function<Object,Object>	searchTransformation
protected final Function<? super ExternalV,? extends InternalV>	writeTransformation

Constructor Summary

Constructors

Constructor	Description
TransformingCollection(Collection<InternalV> internalCollection, Function<? super InternalV,? extends ExternalV> readTransformation, Function<? super ExternalV,? extends InternalV> writeTransformation, Function<Object,Object> searchTransformation)

Method Summary

Modifier and Type	Method	Description
boolean	add(ExternalV value)
boolean	addAll(Collection<? extends ExternalV> c)
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
boolean	equals(Object obj)
void	forEach(Consumer<? super ExternalV> action)
int	hashCode()
boolean	isEmpty()
Iterator<ExternalV>	iterator()
Stream<ExternalV>	parallelStream()
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	removeIf(Predicate<? super ExternalV> filter)
boolean	retainAll(Collection<?> c)
int	size()
Spliterator<ExternalV>	spliterator()
Stream<ExternalV>	stream()
Object[]	toArray()
<T> T[]	toArray(T[] a)
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

toArray

Field Details

readTransformation

protected final Function<? super InternalV,? extends ExternalV> readTransformation

writeTransformation

protected final Function<? super ExternalV,? extends InternalV> writeTransformation

searchTransformation

protected final Function<Object,Object> searchTransformation

internalCollection

protected final Collection<InternalV> internalCollection

Constructor Details

TransformingCollection

public TransformingCollection(Collection<InternalV> internalCollection,
 Function<? super InternalV,? extends ExternalV> readTransformation,
 Function<? super ExternalV,? extends InternalV> writeTransformation,
 Function<Object,Object> searchTransformation)

Method Details

size

public int size()

Specified by:

size in interface Collection<InternalV>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<InternalV>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<InternalV>

iterator

public Iterator<ExternalV> iterator()

Specified by:

iterator in interface Collection<InternalV>

Specified by:

iterator in interface Iterable<InternalV>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<InternalV>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface Collection<InternalV>

add

public boolean add(ExternalV value)

Specified by:

add in interface Collection<InternalV>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<InternalV>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<InternalV>

addAll

public boolean addAll(Collection<? extends ExternalV> c)

Specified by:

addAll in interface Collection<InternalV>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<InternalV>

removeIf

public boolean removeIf(Predicate<? super ExternalV> filter)

Specified by:

removeIf in interface Collection<InternalV>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<InternalV>

clear

public void clear()

Specified by:

clear in interface Collection<InternalV>

spliterator

public Spliterator<ExternalV> spliterator()

Specified by:

spliterator in interface Collection<InternalV>

Specified by:

spliterator in interface Iterable<InternalV>

stream

public Stream<ExternalV> stream()

Specified by:

stream in interface Collection<InternalV>

parallelStream

public Stream<ExternalV> parallelStream()

Specified by:

parallelStream in interface Collection<InternalV>

forEach

public void forEach(Consumer<? super ExternalV> action)

Specified by:

forEach in interface Iterable<InternalV>

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<InternalV>

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Specified by:

equals in interface Collection<InternalV>

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object