Uses of Interface
org.apache.commons.collections4.Transformer

Packages that use Transformer

Package	Description
org.apache.commons.collections4	This package contains the interfaces and utilities shared across all the subpackages of this component.
org.apache.commons.collections4.bag	This package contains implementations of the Bag and SortedBag interfaces.
org.apache.commons.collections4.collection	This package contains implementations of the Collection interface.
org.apache.commons.collections4.comparators	This package contains implementations of the Comparator interface.
org.apache.commons.collections4.functors	This package contains implementations of the Closure, Predicate, Transformer and Factory interfaces.
org.apache.commons.collections4.iterators	This package contains implementations of the Iterator interface.
org.apache.commons.collections4.list	This package contains implementations of the List interface.
org.apache.commons.collections4.map	This package contains implementations of the Map, IterableMap, OrderedMap and SortedMap interfaces.
org.apache.commons.collections4.multimap	This package contains implementations of the MultiValuedMap interfaces.
org.apache.commons.collections4.queue	This package contains implementations for the Queue interface.
org.apache.commons.collections4.set	This package contains implementations of the Set, SortedSet and NavigableSet interfaces.
org.apache.commons.collections4.splitmap	The "split map" concept is that of an object that implements the Put and Get interfaces, with differing generic types.

Uses of Transformer in org.apache.commons.collections4

Methods in org.apache.commons.collections4 that return Transformer

Modifier and Type	Method	Description
static <T> Transformer<T,T>	TransformerUtils.asTransformer(Closure<? super T> closure)	Creates a Transformer that calls a Closure each time the transformer is used.
static <I,O> Transformer<I,O>	TransformerUtils.asTransformer(Factory<? extends O> factory)	Creates a Transformer that calls a Factory each time the transformer is used.
static <T> Transformer<T,java.lang.Boolean>	TransformerUtils.asTransformer(Predicate<? super T> predicate)	Creates a Transformer that calls a Predicate each time the transformer is used.
static <T> Transformer<T,T>	TransformerUtils.chainedTransformer(java.util.Collection<? extends Transformer<? super T,? extends T>> transformers)	Create a new Transformer that calls each transformer in turn, passing the result into the next transformer.
static <T> Transformer<T,T>	TransformerUtils.chainedTransformer(Transformer<? super T,? extends T>... transformers)	Create a new Transformer that calls each transformer in turn, passing the result into the next transformer.
static <T> Transformer<T,T>	TransformerUtils.cloneTransformer()	Gets a transformer that returns a clone of the input object.
static <I,O> Transformer<I,O>	TransformerUtils.constantTransformer(O constantToReturn)	Creates a Transformer that will return the same object each time the transformer is used.
static <I,O> Transformer<I,O>	TransformerUtils.exceptionTransformer()	Gets a transformer that always throws an exception.
static <I,O> Transformer<I,O>	TransformerUtils.ifTransformer(Predicate<? super I> predicate, Transformer<? super I,? extends O> trueTransformer, Transformer<? super I,? extends O> falseTransformer)	Create a new Transformer that calls one of two transformers depending on the specified predicate.
static <T> Transformer<T,T>	TransformerUtils.ifTransformer(Predicate<? super T> predicate, Transformer<? super T,? extends T> trueTransformer)	Create a new Transformer that calls the transformer if the predicate is true, otherwise the input object is returned unchanged.
static <T> Transformer<java.lang.Class<? extends T>,T>	TransformerUtils.instantiateTransformer()	Gets a Transformer that expects an input Class object that it will instantiate.
static <T> Transformer<java.lang.Class<? extends T>,T>	TransformerUtils.instantiateTransformer(java.lang.Class<?>[] paramTypes, java.lang.Object[] args)	Creates a Transformer that expects an input Class object that it will instantiate.
static <I,O> Transformer<I,O>	TransformerUtils.invokerTransformer(java.lang.String methodName)	Gets a Transformer that invokes a method on the input object.
static <I,O> Transformer<I,O>	TransformerUtils.invokerTransformer(java.lang.String methodName, java.lang.Class<?>[] paramTypes, java.lang.Object[] args)	Gets a Transformer that invokes a method on the input object.
static <I,O> Transformer<I,O>	TransformerUtils.mapTransformer(java.util.Map<? super I,? extends O> map)	Creates a Transformer that uses the passed in Map to transform the input object (as a simple lookup).
static <T> Transformer<T,T>	TransformerUtils.nopTransformer()	Gets a transformer that returns the input object.
static <I,O> Transformer<I,O>	TransformerUtils.nullTransformer()	Gets a transformer that always returns null.
static <T> Transformer<T,java.lang.String>	TransformerUtils.stringValueTransformer()	Gets a transformer that returns a java.lang.String representation of the input object.
static <I,O> Transformer<I,O>	TransformerUtils.switchMapTransformer(java.util.Map<I,Transformer<I,O>> objectsAndTransformers)	Create a new Transformer that uses the input object as a key to find the transformer to call.
static <I,O> Transformer<I,O>	TransformerUtils.switchTransformer(java.util.Map<Predicate<I>,Transformer<I,O>> predicatesAndTransformers)	Create a new Transformer that calls one of the transformers depending on the predicates.
static <I,O> Transformer<I,O>	TransformerUtils.switchTransformer(Predicate<? super I>[] predicates, Transformer<? super I,? extends O>[] transformers)	Create a new Transformer that calls one of the transformers depending on the predicates.
static <I,O> Transformer<I,O>	TransformerUtils.switchTransformer(Predicate<? super I>[] predicates, Transformer<? super I,? extends O>[] transformers, Transformer<? super I,? extends O> defaultTransformer)	Create a new Transformer that calls one of the transformers depending on the predicates.
static <I,O> Transformer<I,O>	TransformerUtils.switchTransformer(Predicate<? super I> predicate, Transformer<? super I,? extends O> trueTransformer, Transformer<? super I,? extends O> falseTransformer)	Deprecated. as of 4.1, use TransformerUtils.ifTransformer(Predicate, Transformer, Transformer)

Methods in org.apache.commons.collections4 with parameters of type Transformer

Modifier and Type	Method	Description
static <E> Closure<E>	ClosureUtils.asClosure(Transformer<? super E,?> transformer)	Creates a Closure that calls a Transformer each time it is called.
static <T> Predicate<T>	PredicateUtils.asPredicate(Transformer<? super T,java.lang.Boolean> transformer)	Create a new Predicate that wraps a Transformer.
static <T> Transformer<T,T>	TransformerUtils.chainedTransformer(Transformer<? super T,? extends T>... transformers)	Create a new Transformer that calls each transformer in turn, passing the result into the next transformer.
static <I,O,R extends java.util.Collection<? super O>> R	CollectionUtils.collect(java.lang.Iterable<? extends I> inputCollection, Transformer<? super I,? extends O> transformer, R outputCollection)	Transforms all elements from input collection with the given transformer and adds them to the output collection.
static <I,O> java.util.Collection<O>	CollectionUtils.collect(java.lang.Iterable<I> inputCollection, Transformer<? super I,? extends O> transformer)	Returns a new Collection containing all elements of the input collection transformed by the given transformer.
static <I,O,R extends java.util.Collection<? super O>> R	CollectionUtils.collect(java.util.Iterator<? extends I> inputIterator, Transformer<? super I,? extends O> transformer, R outputCollection)	Transforms all elements from the input iterator with the given transformer and adds them to the output collection.
static <I,O> java.util.Collection<O>	CollectionUtils.collect(java.util.Iterator<I> inputIterator, Transformer<? super I,? extends O> transformer)	Transforms all elements from the input iterator with the given transformer and adds them to the output collection.
static <I,O> Transformer<I,O>	TransformerUtils.ifTransformer(Predicate<? super I> predicate, Transformer<? super I,? extends O> trueTransformer, Transformer<? super I,? extends O> falseTransformer)	Create a new Transformer that calls one of two transformers depending on the specified predicate.
static <T> Transformer<T,T>	TransformerUtils.ifTransformer(Predicate<? super T> predicate, Transformer<? super T,? extends T> trueTransformer)	Create a new Transformer that calls the transformer if the predicate is true, otherwise the input object is returned unchanged.
static <E> java.util.List<E>	ListUtils.lazyList(java.util.List<E> list, Transformer<java.lang.Integer,? extends E> transformer)	Returns a "lazy" list whose elements will be created on demand.
static <K,V> IterableMap<K,V>	MapUtils.lazyMap(java.util.Map<K,V> map, Transformer<? super K,? extends V> transformerFactory)	Returns a "lazy" map whose values will be created on demand.
static <K,V> java.util.SortedMap<K,V>	MapUtils.lazySortedMap(java.util.SortedMap<K,V> map, Transformer<? super K,? extends V> transformerFactory)	Returns a "lazy" sorted map whose values will be created on demand.
static <E> java.util.Iterator<E>	IteratorUtils.objectGraphIterator(E root, Transformer<? super E,? extends E> transformer)	Gets an iterator that operates over an object graph.
static <K,V,E> void	MapUtils.populateMap(java.util.Map<K,V> map, java.lang.Iterable<? extends E> elements, Transformer<E,K> keyTransformer, Transformer<E,V> valueTransformer)	Populates a Map using the supplied Transformers to transform the elements into keys and values.
static <K,V> void	MapUtils.populateMap(java.util.Map<K,V> map, java.lang.Iterable<? extends V> elements, Transformer<V,K> keyTransformer)	Populates a Map using the supplied Transformer to transform the elements into keys, using the unaltered element as the value in the Map.
static <K,V,E> void	MapUtils.populateMap(MultiMap<K,V> map, java.lang.Iterable<? extends E> elements, Transformer<E,K> keyTransformer, Transformer<E,V> valueTransformer)	Populates a MultiMap using the supplied Transformers to transform the elements into keys and values.
static <K,V> void	MapUtils.populateMap(MultiMap<K,V> map, java.lang.Iterable<? extends V> elements, Transformer<V,K> keyTransformer)	Populates a MultiMap using the supplied Transformer to transform the elements into keys, using the unaltered element as the value in the MultiMap.
static <I,O> Transformer<I,O>	TransformerUtils.switchTransformer(Predicate<? super I>[] predicates, Transformer<? super I,? extends O>[] transformers)	Create a new Transformer that calls one of the transformers depending on the predicates.
static <I,O> Transformer<I,O>	TransformerUtils.switchTransformer(Predicate<? super I>[] predicates, Transformer<? super I,? extends O>[] transformers, Transformer<? super I,? extends O> defaultTransformer)	Create a new Transformer that calls one of the transformers depending on the predicates.
static <I,O> Transformer<I,O>	TransformerUtils.switchTransformer(Predicate<? super I> predicate, Transformer<? super I,? extends O> trueTransformer, Transformer<? super I,? extends O> falseTransformer)	Deprecated. as of 4.1, use TransformerUtils.ifTransformer(Predicate, Transformer, Transformer)
static <E> java.lang.String	IterableUtils.toString(java.lang.Iterable<E> iterable, Transformer<? super E,java.lang.String> transformer)	Returns a string representation of the elements of the specified iterable.
static <E> java.lang.String	IterableUtils.toString(java.lang.Iterable<E> iterable, Transformer<? super E,java.lang.String> transformer, java.lang.String delimiter, java.lang.String prefix, java.lang.String suffix)	Returns a string representation of the elements of the specified iterable.
static <E> java.lang.String	IteratorUtils.toString(java.util.Iterator<E> iterator, Transformer<? super E,java.lang.String> transformer)	Returns a string representation of the elements of the specified iterator.
static <E> java.lang.String	IteratorUtils.toString(java.util.Iterator<E> iterator, Transformer<? super E,java.lang.String> transformer, java.lang.String delimiter, java.lang.String prefix, java.lang.String suffix)	Returns a string representation of the elements of the specified iterator.
static <C> void	CollectionUtils.transform(java.util.Collection<C> collection, Transformer<? super C,? extends C> transformer)	Transform the collection by applying a Transformer to each element.
<O> FluentIterable<O>	FluentIterable.transform(Transformer<? super E,? extends O> transformer)	Returns a new FluentIterable whose iterator will return all elements of this iterable transformed by the provided transformer.
static <I,O> java.util.Comparator<I>	ComparatorUtils.transformedComparator(java.util.Comparator<O> comparator, Transformer<? super I,? extends O> transformer)	Gets a Comparator that passes transformed objects to the given comparator.
static <I,O> java.lang.Iterable<O>	IterableUtils.transformedIterable(java.lang.Iterable<I> iterable, Transformer<? super I,? extends O> transformer)	Returns a transformed view of the given iterable where all of its elements have been transformed by the provided transformer.
static <I,O> java.util.Iterator<O>	IteratorUtils.transformedIterator(java.util.Iterator<? extends I> iterator, Transformer<? super I,? extends O> transform)	Gets an iterator that transforms the elements of another iterator.
static <E> java.util.List<E>	ListUtils.transformedList(java.util.List<E> list, Transformer<? super E,? extends E> transformer)	Returns a transformed list backed by the given list.
static <K,V> IterableMap<K,V>	MapUtils.transformedMap(java.util.Map<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer)	Returns a transformed map backed by the given map.
static <K,V> MultiValuedMap<K,V>	MultiMapUtils.transformedMultiValuedMap(MultiValuedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer)	Returns a TransformedMultiValuedMap backed by the given map.
static <E> java.util.SortedSet<E>	SetUtils.transformedNavigableSet(java.util.NavigableSet<E> set, Transformer<? super E,? extends E> transformer)	Returns a transformed navigable set backed by the given navigable set.
static <T> Predicate<T>	PredicateUtils.transformedPredicate(Transformer<? super T,? extends T> transformer, Predicate<? super T> predicate)	Creates a predicate that transforms the input object before passing it to the predicate.
static <E> java.util.Set<E>	SetUtils.transformedSet(java.util.Set<E> set, Transformer<? super E,? extends E> transformer)	Returns a transformed set backed by the given set.
static <K,V> java.util.SortedMap<K,V>	MapUtils.transformedSortedMap(java.util.SortedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer)	Returns a transformed sorted map backed by the given map.
static <E> java.util.SortedSet<E>	SetUtils.transformedSortedSet(java.util.SortedSet<E> set, Transformer<? super E,? extends E> transformer)	Returns a transformed sorted set backed by the given set.
static <E> Bag<E>	BagUtils.transformingBag(Bag<E> bag, Transformer<? super E,? extends E> transformer)	Returns a transformed bag backed by the given bag.
static <E> java.util.Collection<E>	CollectionUtils.transformingCollection(java.util.Collection<E> collection, Transformer<? super E,? extends E> transformer)	Returns a transformed bag backed by the given collection.
static <E> java.util.Queue<E>	QueueUtils.transformingQueue(java.util.Queue<E> queue, Transformer<? super E,? extends E> transformer)	Returns a transformed queue backed by the given queue.
static <E> SortedBag<E>	BagUtils.transformingSortedBag(SortedBag<E> bag, Transformer<? super E,? extends E> transformer)	Returns a transformed sorted bag backed by the given bag.

Method parameters in org.apache.commons.collections4 with type arguments of type Transformer

Modifier and Type	Method	Description
static <T> Transformer<T,T>	TransformerUtils.chainedTransformer(java.util.Collection<? extends Transformer<? super T,? extends T>> transformers)	Create a new Transformer that calls each transformer in turn, passing the result into the next transformer.
static <I,O> Transformer<I,O>	TransformerUtils.switchMapTransformer(java.util.Map<I,Transformer<I,O>> objectsAndTransformers)	Create a new Transformer that uses the input object as a key to find the transformer to call.
static <I,O> Transformer<I,O>	TransformerUtils.switchTransformer(java.util.Map<Predicate<I>,Transformer<I,O>> predicatesAndTransformers)	Create a new Transformer that calls one of the transformers depending on the predicates.

Uses of Transformer in org.apache.commons.collections4.bag

Methods in org.apache.commons.collections4.bag with parameters of type Transformer

Modifier and Type	Method	Description
static <E> Bag<E>	TransformedBag.transformedBag(Bag<E> bag, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming bag that will transform existing contents of the specified bag.
static <E> TransformedSortedBag<E>	TransformedSortedBag.transformedSortedBag(SortedBag<E> bag, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming sorted bag that will transform existing contents of the specified sorted bag.
static <E> Bag<E>	TransformedBag.transformingBag(Bag<E> bag, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming bag.
static <E> TransformedSortedBag<E>	TransformedSortedBag.transformingSortedBag(SortedBag<E> bag, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming sorted bag.

Constructors in org.apache.commons.collections4.bag with parameters of type Transformer

Constructor	Description
TransformedBag(Bag<E> bag, Transformer<? super E,? extends E> transformer)	Constructor that wraps (not copies).
TransformedSortedBag(SortedBag<E> bag, Transformer<? super E,? extends E> transformer)	Constructor that wraps (not copies).

Uses of Transformer in org.apache.commons.collections4.collection

Fields in org.apache.commons.collections4.collection declared as Transformer

Modifier and Type	Field	Description
protected Transformer<? super E,? extends E>	TransformedCollection.transformer	The transformer to use

Methods in org.apache.commons.collections4.collection with parameters of type Transformer

Modifier and Type	Method	Description
static <K,C> IndexedCollection<K,C>	IndexedCollection.nonUniqueIndexedCollection(java.util.Collection<C> coll, Transformer<C,K> keyTransformer)	Create an IndexedCollection for a non-unique index.
static <E> TransformedCollection<E>	TransformedCollection.transformedCollection(java.util.Collection<E> collection, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming collection that will transform existing contents of the specified collection.
static <E> TransformedCollection<E>	TransformedCollection.transformingCollection(java.util.Collection<E> coll, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming collection.
static <K,C> IndexedCollection<K,C>	IndexedCollection.uniqueIndexedCollection(java.util.Collection<C> coll, Transformer<C,K> keyTransformer)	Create an IndexedCollection for a unique index.

Constructors in org.apache.commons.collections4.collection with parameters of type Transformer

Constructor	Description
IndexedCollection(java.util.Collection<C> coll, Transformer<C,K> keyTransformer, MultiMap<K,C> map, boolean uniqueIndex)	Create a IndexedCollection.
TransformedCollection(java.util.Collection<E> coll, Transformer<? super E,? extends E> transformer)	Constructor that wraps (not copies).

Uses of Transformer in org.apache.commons.collections4.comparators

Constructors in org.apache.commons.collections4.comparators with parameters of type Transformer

Constructor	Description
TransformingComparator(Transformer<? super I,? extends O> transformer)	Constructs an instance with the given Transformer and a ComparableComparator.
TransformingComparator(Transformer<? super I,? extends O> transformer, java.util.Comparator<O> decorated)	Constructs an instance with the given Transformer and Comparator.

Uses of Transformer in org.apache.commons.collections4.functors

Classes in org.apache.commons.collections4.functors that implement Transformer

Modifier and Type	Class	Description
class	ChainedTransformer<T>	Transformer implementation that chains the specified transformers together.
class	CloneTransformer<T>	Transformer implementation that returns a clone of the input object.
class	ClosureTransformer<T>	Transformer implementation that calls a Closure using the input object and then returns the input.
class	ConstantTransformer<I,O>	Transformer implementation that returns the same constant each time.
class	ExceptionTransformer<I,O>	Transformer implementation that always throws an exception.
class	FactoryTransformer<I,O>	Transformer implementation that calls a Factory and returns the result.
class	IfTransformer<I,O>	Transformer implementation that will call one of two closures based on whether a predicate evaluates as true or false.
class	InstantiateTransformer<T>	Transformer implementation that creates a new object instance by reflection.
class	InvokerTransformer<I,O>	Transformer implementation that creates a new object instance by reflection.
class	MapTransformer<I,O>	Transformer implementation that returns the value held in a specified map using the input parameter as a key.
class	NOPTransformer<T>	Transformer implementation that does nothing.
class	PredicateTransformer<T>	Transformer implementation that calls a Predicate using the input object and then returns the result.
class	StringValueTransformer<T>	Transformer implementation that returns the result of calling String.valueOf on the input object.
class	SwitchTransformer<I,O>	Transformer implementation calls the transformer whose predicate returns true, like a switch statement.

Fields in org.apache.commons.collections4.functors declared as Transformer

Modifier and Type	Field	Description
static Transformer	CloneTransformer.INSTANCE	Singleton predicate instance
static Transformer	ExceptionTransformer.INSTANCE	Singleton predicate instance
static Transformer	NOPTransformer.INSTANCE	Singleton predicate instance
static Transformer	ConstantTransformer.NULL_INSTANCE	Returns null each time

Methods in org.apache.commons.collections4.functors that return Transformer

Modifier and Type	Method	Description
static <T> Transformer<T,T>	ChainedTransformer.chainedTransformer(java.util.Collection<? extends Transformer<? super T,? extends T>> transformers)	Create a new Transformer that calls each transformer in turn, passing the result into the next transformer.
static <T> Transformer<T,T>	ChainedTransformer.chainedTransformer(Transformer<? super T,? extends T>... transformers)	Factory method that performs validation and copies the parameter array.
static <T> Transformer<T,T>	CloneTransformer.cloneTransformer()	Factory returning the singleton instance.
static <T> Transformer<T,T>	ClosureTransformer.closureTransformer(Closure<? super T> closure)	Factory method that performs validation.
static <I,O> Transformer<I,O>	ConstantTransformer.constantTransformer(O constantToReturn)	Transformer method that performs validation.
static <I,O> Transformer<I,O>	ExceptionTransformer.exceptionTransformer()	Factory returning the singleton instance.
static <I,O> Transformer<I,O>	FactoryTransformer.factoryTransformer(Factory<? extends O> factory)	Factory method that performs validation.
Transformer<? super I,? extends O>	SwitchTransformer.getDefaultTransformer()	Gets the default transformer.
Transformer<? super I,? extends O>	IfTransformer.getFalseTransformer()	Gets the transformer used when false.
Transformer<? super T,? extends T>	TransformedPredicate.getTransformer()	Gets the transformer in use.
Transformer<? super E,?>	TransformerClosure.getTransformer()	Gets the transformer.
Transformer<? super T,java.lang.Boolean>	TransformerPredicate.getTransformer()	Gets the transformer.
Transformer<? super T,? extends T>[]	ChainedTransformer.getTransformers()	Gets the transformers.
Transformer<? super I,? extends O>[]	SwitchTransformer.getTransformers()	Gets the transformers.
Transformer<? super I,? extends O>	IfTransformer.getTrueTransformer()	Gets the transformer used when true.
static <I,O> Transformer<I,O>	IfTransformer.ifTransformer(Predicate<? super I> predicate, Transformer<? super I,? extends O> trueTransformer, Transformer<? super I,? extends O> falseTransformer)	Factory method that performs validation.
static <T> Transformer<T,T>	IfTransformer.ifTransformer(Predicate<? super T> predicate, Transformer<? super T,? extends T> trueTransformer)	Factory method that performs validation.
static <T> Transformer<java.lang.Class<? extends T>,T>	InstantiateTransformer.instantiateTransformer()	Get a typed no-arg instance.
static <T> Transformer<java.lang.Class<? extends T>,T>	InstantiateTransformer.instantiateTransformer(java.lang.Class<?>[] paramTypes, java.lang.Object[] args)	Transformer method that performs validation.
static <I,O> Transformer<I,O>	InvokerTransformer.invokerTransformer(java.lang.String methodName)	Gets an instance of this transformer calling a specific method with no arguments.
static <I,O> Transformer<I,O>	InvokerTransformer.invokerTransformer(java.lang.String methodName, java.lang.Class<?>[] paramTypes, java.lang.Object[] args)	Gets an instance of this transformer calling a specific method with specific values.
static <I,O> Transformer<I,O>	MapTransformer.mapTransformer(java.util.Map<? super I,? extends O> map)	Factory to create the transformer.
static <T> Transformer<T,T>	NOPTransformer.nopTransformer()	Factory returning the singleton instance.
static <I,O> Transformer<I,O>	ConstantTransformer.nullTransformer()	Get a typed null instance.
static <T> Transformer<T,java.lang.Boolean>	PredicateTransformer.predicateTransformer(Predicate<? super T> predicate)	Factory method that performs validation.
static <T> Transformer<T,java.lang.String>	StringValueTransformer.stringValueTransformer()	Factory returning the singleton instance.
static <I,O> Transformer<I,O>	SwitchTransformer.switchTransformer(java.util.Map<? extends Predicate<? super I>,? extends Transformer<? super I,? extends O>> map)	Create a new Transformer that calls one of the transformers depending on the predicates.
static <I,O> Transformer<I,O>	SwitchTransformer.switchTransformer(Predicate<? super I>[] predicates, Transformer<? super I,? extends O>[] transformers, Transformer<? super I,? extends O> defaultTransformer)	Factory method that performs validation and copies the parameter arrays.

Methods in org.apache.commons.collections4.functors with parameters of type Transformer

Modifier and Type	Method	Description
static <T> Transformer<T,T>	ChainedTransformer.chainedTransformer(Transformer<? super T,? extends T>... transformers)	Factory method that performs validation and copies the parameter array.
static <I,O> Transformer<I,O>	IfTransformer.ifTransformer(Predicate<? super I> predicate, Transformer<? super I,? extends O> trueTransformer, Transformer<? super I,? extends O> falseTransformer)	Factory method that performs validation.
static <T> Transformer<T,T>	IfTransformer.ifTransformer(Predicate<? super T> predicate, Transformer<? super T,? extends T> trueTransformer)	Factory method that performs validation.
static <I,O> Transformer<I,O>	SwitchTransformer.switchTransformer(Predicate<? super I>[] predicates, Transformer<? super I,? extends O>[] transformers, Transformer<? super I,? extends O> defaultTransformer)	Factory method that performs validation and copies the parameter arrays.
static <T> Predicate<T>	TransformedPredicate.transformedPredicate(Transformer<? super T,? extends T> transformer, Predicate<? super T> predicate)	Factory to create the predicate.
static <E> Closure<E>	TransformerClosure.transformerClosure(Transformer<? super E,?> transformer)	Factory method that performs validation.
static <T> Predicate<T>	TransformerPredicate.transformerPredicate(Transformer<? super T,java.lang.Boolean> transformer)	Factory to create the predicate.

Method parameters in org.apache.commons.collections4.functors with type arguments of type Transformer

Modifier and Type	Method	Description
static <T> Transformer<T,T>	ChainedTransformer.chainedTransformer(java.util.Collection<? extends Transformer<? super T,? extends T>> transformers)	Create a new Transformer that calls each transformer in turn, passing the result into the next transformer.
static <I,O> Transformer<I,O>	SwitchTransformer.switchTransformer(java.util.Map<? extends Predicate<? super I>,? extends Transformer<? super I,? extends O>> map)	Create a new Transformer that calls one of the transformers depending on the predicates.

Constructors in org.apache.commons.collections4.functors with parameters of type Transformer

Constructor	Description
ChainedTransformer(Transformer<? super T,? extends T>... transformers)	Constructor that performs no validation.
IfTransformer(Predicate<? super I> predicate, Transformer<? super I,? extends O> trueTransformer, Transformer<? super I,? extends O> falseTransformer)	Constructor that performs no validation.
SwitchTransformer(Predicate<? super I>[] predicates, Transformer<? super I,? extends O>[] transformers, Transformer<? super I,? extends O> defaultTransformer)	Constructor that performs no validation.
TransformedPredicate(Transformer<? super T,? extends T> transformer, Predicate<? super T> predicate)	Constructor that performs no validation.
TransformerClosure(Transformer<? super E,?> transformer)	Constructor that performs no validation.
TransformerPredicate(Transformer<? super T,java.lang.Boolean> transformer)	Constructor that performs no validation.

Uses of Transformer in org.apache.commons.collections4.iterators

Methods in org.apache.commons.collections4.iterators that return Transformer

Modifier and Type	Method	Description
Transformer<? super I,? extends O>	TransformIterator.getTransformer()	Gets the transformer this iterator is using.

Methods in org.apache.commons.collections4.iterators with parameters of type Transformer

Modifier and Type	Method	Description
void	TransformIterator.setTransformer(Transformer<? super I,? extends O> transformer)	Sets the transformer this the iterator to use.

Constructors in org.apache.commons.collections4.iterators with parameters of type Transformer

Constructor	Description
ObjectGraphIterator(E root, Transformer<? super E,? extends E> transformer)	Constructs an ObjectGraphIterator using a root object and transformer.
TransformIterator(java.util.Iterator<? extends I> iterator, Transformer<? super I,? extends O> transformer)	Constructs a new TransformIterator that will use the given iterator and transformer.

Uses of Transformer in org.apache.commons.collections4.list

Methods in org.apache.commons.collections4.list with parameters of type Transformer

Modifier and Type	Method	Description
static <E> LazyList<E>	LazyList.lazyList(java.util.List<E> list, Transformer<java.lang.Integer,? extends E> transformer)	Transformer method to create a lazily instantiating list.
static <E> TransformedList<E>	TransformedList.transformedList(java.util.List<E> list, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming list that will transform existing contents of the specified list.
static <E> TransformedList<E>	TransformedList.transformingList(java.util.List<E> list, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming list.

Constructors in org.apache.commons.collections4.list with parameters of type Transformer

Constructor	Description
LazyList(java.util.List<E> list, Transformer<java.lang.Integer,? extends E> transformer)	Constructor that wraps (not copies).
TransformedList(java.util.List<E> list, Transformer<? super E,? extends E> transformer)	Constructor that wraps (not copies).

Uses of Transformer in org.apache.commons.collections4.map

Fields in org.apache.commons.collections4.map declared as Transformer

Modifier and Type	Field	Description
protected Transformer<? super K,? extends V>	LazyMap.factory	The factory to use to construct elements
protected Transformer<? super K,? extends K>	TransformedMap.keyTransformer	The transformer to use for the key
protected Transformer<? super V,? extends V>	TransformedMap.valueTransformer	The transformer to use for the value

Methods in org.apache.commons.collections4.map with parameters of type Transformer

Modifier and Type	Method	Description
static <K,V> java.util.Map<K,V>	DefaultedMap.defaultedMap(java.util.Map<K,V> map, Transformer<? super K,? extends V> transformer)	Factory method to create a defaulting map.
static <V,K> LazyMap<K,V>	LazyMap.lazyMap(java.util.Map<K,V> map, Transformer<? super K,? extends V> factory)	Factory method to create a lazily instantiated map.
static <K,V> LazySortedMap<K,V>	LazySortedMap.lazySortedMap(java.util.SortedMap<K,V> map, Transformer<? super K,? extends V> factory)	Factory method to create a lazily instantiated sorted map.
static <K,V> TransformedMap<K,V>	TransformedMap.transformedMap(java.util.Map<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer)	Factory method to create a transforming map that will transform existing contents of the specified map.
static <K,V> TransformedSortedMap<K,V>	TransformedSortedMap.transformedSortedMap(java.util.SortedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer)	Factory method to create a transforming sorted map that will transform existing contents of the specified map.
static <K,V> TransformedMap<K,V>	TransformedMap.transformingMap(java.util.Map<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer)	Factory method to create a transforming map.
static <K,V> TransformedSortedMap<K,V>	TransformedSortedMap.transformingSortedMap(java.util.SortedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer)	Factory method to create a transforming sorted map.

Constructors in org.apache.commons.collections4.map with parameters of type Transformer

Constructor	Description
DefaultedMap(java.util.Map<K,V> map, Transformer<? super K,? extends V> defaultValueTransformer)	Constructor that wraps (not copies).
DefaultedMap(Transformer<? super K,? extends V> defaultValueTransformer)	Constructs a new empty DefaultedMap that decorates a HashMap.
LazyMap(java.util.Map<K,V> map, Transformer<? super K,? extends V> factory)	Constructor that wraps (not copies).
LazySortedMap(java.util.SortedMap<K,V> map, Transformer<? super K,? extends V> factory)	Constructor that wraps (not copies).
TransformedMap(java.util.Map<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer)	Constructor that wraps (not copies).
TransformedSortedMap(java.util.SortedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer)	Constructor that wraps (not copies).

Uses of Transformer in org.apache.commons.collections4.multimap

Methods in org.apache.commons.collections4.multimap with parameters of type Transformer

Modifier and Type	Method	Description
static <K,V> TransformedMultiValuedMap<K,V>	TransformedMultiValuedMap.transformedMap(MultiValuedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer)	Factory method to create a transforming MultiValuedMap that will transform existing contents of the specified map.
static <K,V> TransformedMultiValuedMap<K,V>	TransformedMultiValuedMap.transformingMap(MultiValuedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer)	Factory method to create a transforming MultiValuedMap.

Constructors in org.apache.commons.collections4.multimap with parameters of type Transformer

Constructor	Description
TransformedMultiValuedMap(MultiValuedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer)	Constructor that wraps (not copies).

Uses of Transformer in org.apache.commons.collections4.queue

Methods in org.apache.commons.collections4.queue with parameters of type Transformer

Modifier and Type	Method	Description
static <E> TransformedQueue<E>	TransformedQueue.transformedQueue(java.util.Queue<E> queue, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming queue that will transform existing contents of the specified queue.
static <E> TransformedQueue<E>	TransformedQueue.transformingQueue(java.util.Queue<E> queue, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming queue.

Constructors in org.apache.commons.collections4.queue with parameters of type Transformer

Constructor	Description
TransformedQueue(java.util.Queue<E> queue, Transformer<? super E,? extends E> transformer)	Constructor that wraps (not copies).

Uses of Transformer in org.apache.commons.collections4.set

Methods in org.apache.commons.collections4.set with parameters of type Transformer

Modifier and Type	Method	Description
static <E> TransformedNavigableSet<E>	TransformedNavigableSet.transformedNavigableSet(java.util.NavigableSet<E> set, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming navigable set that will transform existing contents of the specified navigable set.
static <E> java.util.Set<E>	TransformedSet.transformedSet(java.util.Set<E> set, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming set that will transform existing contents of the specified set.
static <E> TransformedSortedSet<E>	TransformedSortedSet.transformedSortedSet(java.util.SortedSet<E> set, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming sorted set that will transform existing contents of the specified sorted set.
static <E> TransformedNavigableSet<E>	TransformedNavigableSet.transformingNavigableSet(java.util.NavigableSet<E> set, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming navigable set.
static <E> TransformedSet<E>	TransformedSet.transformingSet(java.util.Set<E> set, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming set.
static <E> TransformedSortedSet<E>	TransformedSortedSet.transformingSortedSet(java.util.SortedSet<E> set, Transformer<? super E,? extends E> transformer)	Factory method to create a transforming sorted set.

Constructors in org.apache.commons.collections4.set with parameters of type Transformer

Constructor	Description
TransformedNavigableSet(java.util.NavigableSet<E> set, Transformer<? super E,? extends E> transformer)	Constructor that wraps (not copies).
TransformedSet(java.util.Set<E> set, Transformer<? super E,? extends E> transformer)	Constructor that wraps (not copies).
TransformedSortedSet(java.util.SortedSet<E> set, Transformer<? super E,? extends E> transformer)	Constructor that wraps (not copies).

Uses of Transformer in org.apache.commons.collections4.splitmap

Methods in org.apache.commons.collections4.splitmap with parameters of type Transformer

Modifier and Type	Method	Description
static <J,K,U,V> TransformedSplitMap<J,K,U,V>	TransformedSplitMap.transformingMap(java.util.Map<K,V> map, Transformer<? super J,? extends K> keyTransformer, Transformer<? super U,? extends V> valueTransformer)	Factory method to create a transforming map.

Constructors in org.apache.commons.collections4.splitmap with parameters of type Transformer

Constructor	Description
TransformedSplitMap(java.util.Map<K,V> map, Transformer<? super J,? extends K> keyTransformer, Transformer<? super U,? extends V> valueTransformer)	Constructor that wraps (not copies).