Uses of Interface
com.google.common.base.Function

Packages that use Function

Package	Description
com.google.common.base	Basic utility libraries and interfaces.
com.google.common.cache	This package contains caching utilities.
com.google.common.collect	This package contains generic collection interfaces and implementations, and other utilities for working with collections.
com.google.common.escape	Interfaces, utilities, and simple implementations of escapers and encoders.
com.google.common.graph	An API for representing graph (node and edge) data.
com.google.common.primitives	Static utilities for working with the eight primitive types and void, and value types for treating them as unsigned.
com.google.common.reflect	This package contains utilities to work with Java reflection.
com.google.common.testing	This package contains testing utilities.
com.google.common.util.concurrent	Concurrency utilities.

Uses of Function in com.google.common.base

Subinterfaces of Function in com.google.common.base

Modifier and Type	Interface	Description
private static interface	Suppliers.SupplierFunction<T>

Classes in com.google.common.base that implement Function

Modifier and Type	Class	Description
private static class	CaseFormat.StringConverter
class	Converter<A,B>	A function from A to B with an associated reverse function from B to A; used for converting back and forth between different representations of the same information.
private static class	Converter.ConverterComposition<A,B,C>
private static class	Converter.FunctionBasedConverter<A,B>
private static class	Converter.IdentityConverter<T>	A converter that always converts or reverses an object to itself.
private static class	Converter.ReverseConverter<A,B>
private static class	Enums.StringConverter<T extends java.lang.Enum<T>>
private static class	Functions.ConstantFunction<E>
private static class	Functions.ForMapWithDefault<K,V>
private static class	Functions.FunctionComposition<A,B,C>
private static class	Functions.FunctionForMapNoDefault<K,V>
private static class	Functions.IdentityFunction
private static class	Functions.PredicateFunction<T>
private static class	Functions.SupplierFunction<T>
private static class	Functions.ToStringFunction
private static class	Suppliers.SupplierFunctionImpl

Fields in com.google.common.base declared as Function

Modifier and Type	Field	Description
private Function<? super B,? extends A>	Converter.FunctionBasedConverter.backwardFunction
private Function<A,? extends B>	Functions.FunctionComposition.f
(package private) Function<A,? extends B>	Predicates.CompositionPredicate.f
private Function<? super A,? extends B>	Converter.FunctionBasedConverter.forwardFunction
private Function<F,? extends T>	FunctionalEquivalence.function
(package private) Function<? super F,T>	Suppliers.SupplierComposition.function
private Function<B,C>	Functions.FunctionComposition.g

Methods in com.google.common.base that return Function

Modifier and Type	Method	Description
static <A,B,C> Function<A,C>	Functions.compose(Function<B,C> g, Function<A,? extends B> f)	Returns the composition of two functions.
static <E> Function<java.lang.Object,E>	Functions.constant(E value)	Returns a function that ignores its input and always returns value.
static <K,V> Function<K,V>	Functions.forMap(java.util.Map<K,? extends V> map, V defaultValue)	Returns a function which performs a map lookup with a default value.
static <K,V> Function<K,V>	Functions.forMap(java.util.Map<K,V> map)	Returns a function which performs a map lookup.
static <T> Function<T,java.lang.Boolean>	Functions.forPredicate(Predicate<T> predicate)	Creates a function that returns the same boolean output as the given predicate for all inputs.
static <T> Function<java.lang.Object,T>	Functions.forSupplier(Supplier<T> supplier)	Returns a function that ignores its input and returns the result of supplier.get().
static <E> Function<E,E>	Functions.identity()	Returns the identity function.
static <T> Function<Supplier<T>,T>	Suppliers.supplierFunction()	Returns a function that accepts a supplier and returns the result of invoking Supplier.get() on that supplier.
static Function<java.lang.Object,java.lang.String>	Functions.toStringFunction()	A function equivalent to the method reference Object::toString, for users not yet using Java 8.

Methods in com.google.common.base with parameters of type Function

Modifier and Type	Method	Description
static <A,B,C> Function<A,C>	Functions.compose(Function<B,C> g, Function<A,? extends B> f)	Returns the composition of two functions.
static <A,B> Predicate<A>	Predicates.compose(Predicate<B> predicate, Function<A,? extends B> function)	Returns the composition of a function and a predicate.
static <F,T> Supplier<T>	Suppliers.compose(Function<? super F,T> function, Supplier<F> supplier)	Returns a new supplier which is the composition of the provided function and supplier.
static <A,B> Converter<A,B>	Converter.from(Function<? super A,? extends B> forwardFunction, Function<? super B,? extends A> backwardFunction)	Returns a converter based on separate forward and backward functions.
<F> Equivalence<F>	Equivalence.onResultOf(Function<F,? extends T> function)	Returns a new equivalence relation for F which evaluates equivalence by first applying function to the argument, then evaluating using this.
<V> Optional<V>	Absent.transform(Function<? super T,V> function)
abstract <V> Optional<V>	Optional.transform(Function<? super T,V> function)	If the instance is present, it is transformed with the given Function; otherwise, Optional.absent() is returned.
<V> Optional<V>	Present.transform(Function<? super T,V> function)

Constructors in com.google.common.base with parameters of type Function

Constructor	Description
CompositionPredicate(Predicate<B> p, Function<A,? extends B> f)
FunctionalEquivalence(Function<F,? extends T> function, Equivalence<T> resultEquivalence)
FunctionBasedConverter(Function<? super A,? extends B> forwardFunction, Function<? super B,? extends A> backwardFunction)
FunctionComposition(Function<B,C> g, Function<A,? extends B> f)
SupplierComposition(Function<? super F,T> function, Supplier<F> supplier)

Uses of Function in com.google.common.cache

Subinterfaces of Function in com.google.common.cache

Modifier and Type	Interface	Description
interface	LoadingCache<K,V>	A semi-persistent mapping from keys to values.

Classes in com.google.common.cache that implement Function

Modifier and Type	Class	Description
class	AbstractLoadingCache<K,V>	This class provides a skeletal implementation of the Cache interface to minimize the effort required to implement this interface.
class	ForwardingLoadingCache<K,V>	A cache which forwards all its method calls to another cache.
static class	ForwardingLoadingCache.SimpleForwardingLoadingCache<K,V>	A simplified version of ForwardingLoadingCache where subclasses can pass in an already constructed LoadingCache as the delegate.
(package private) static class	LocalCache.LoadingSerializationProxy<K,V>	Serializes the configuration of a LocalCache, reconstituting it as an LoadingCache using CacheBuilder upon deserialization.
(package private) static class	LocalCache.LocalLoadingCache<K,V>

Fields in com.google.common.cache declared as Function

Modifier and Type	Field	Description
private Function<K,V>	CacheLoader.FunctionToCacheLoader.computingFunction

Methods in com.google.common.cache with parameters of type Function

Modifier and Type	Method	Description
static <K,V> CacheLoader<K,V>	CacheLoader.from(Function<K,V> function)	Returns a cache loader that uses function to load keys, without supporting either reloading or bulk loading.

Constructors in com.google.common.cache with parameters of type Function

Constructor	Description
FunctionToCacheLoader(Function<K,V> computingFunction)

Uses of Function in com.google.common.collect

Classes in com.google.common.collect that implement Function

Modifier and Type	Class	Description
private static class	FluentIterable.FromIterableFunction<E>	Function that transforms Iterable<E> into a fluent iterable.
private static class	Interners.InternerFunction<E>
private static class	Maps.BiMapConverter<A,B>
private static class	Maps.EntryFunction
(package private) static class	Range.LowerBoundFn
(package private) static class	Range.UpperBoundFn

Fields in com.google.common.collect declared as Function

Modifier and Type	Field	Description
(package private) Function<F,? extends T>	ByFunctionOrdering.function
(package private) Function<? super F,? extends T>	Collections2.TransformedCollection.function
(package private) Function<? super F,? extends T>	Lists.TransformingRandomAccessList.function
(package private) Function<? super F,? extends T>	Lists.TransformingSequentialList.function
(package private) Function<? super K,V>	Maps.AsMapView.function
private Function<? super K,V>	Maps.NavigableAsMapView.function
(package private) Function<? super V1,V2>	Tables.TransformedTable.function
private static Function<Table.Cell<?,?,?>,Table.Cell<?,?,?>>	Tables.TransposeTable.TRANSPOSE_CELL
private static Function<? extends java.util.Map<?,?>,? extends java.util.Map<?,?>>	Tables.UNMODIFIABLE_WRAPPER

Methods in com.google.common.collect that return Function

Modifier and Type	Method	Description
(package private) static <K,V1,V2> Function<java.util.Map.Entry<K,V1>,java.util.Map.Entry<K,V2>>	Maps.asEntryToEntryFunction(Maps.EntryTransformer<? super K,? super V1,V2> transformer)	Views an entry transformer as a function from entries to entries.
(package private) static <K,V1,V2> Function<java.util.Map.Entry<K,V1>,V2>	Maps.asEntryToValueFunction(Maps.EntryTransformer<? super K,? super V1,V2> transformer)	Views an entry transformer as a function from Entry to values.
static <E> Function<E,E>	Interners.asFunction(Interner<E> interner)	Returns a function that delegates to the Interner.intern(E) method of the given interner.
(package private) static <K,V1,V2> Function<V1,V2>	Maps.asValueToValueFunction(Maps.EntryTransformer<? super K,V1,V2> transformer, K key)
(package private) Function<Table.Cell<R,C,V1>,Table.Cell<R,C,V2>>	Tables.TransformedTable.cellFunction()
(package private) static <K> Function<java.util.Map.Entry<K,?>,K>	Maps.keyFunction()
(package private) static <C extends java.lang.Comparable<?>> Function<Range<C>,Cut<C>>	Range.lowerBoundFn()
(package private) static <T> Function<java.lang.Iterable<? extends T>,java.util.Iterator<? extends T>>	Iterables.toIterator()
private static <K,V> Function<java.util.Map<K,V>,java.util.Map<K,V>>	Tables.unmodifiableWrapper()
(package private) static <C extends java.lang.Comparable<?>> Function<Range<C>,Cut<C>>	Range.upperBoundFn()
(package private) static <V> Function<java.util.Map.Entry<?,V>,V>	Maps.valueFunction()

Methods in com.google.common.collect with parameters of type Function

Modifier and Type	Method	Description
(package private) static <K,V1,V2> Maps.EntryTransformer<K,V1,V2>	Maps.asEntryTransformer(Function<? super V1,V2> function)	Views a function as an entry transformer that ignores the entry key.
static <K,V> java.util.NavigableMap<K,V>	Maps.asMap(java.util.NavigableSet<K> set, Function<? super K,V> function)	Returns a view of the navigable set as a map, mapping keys from the set according to the specified function.
static <K,V> java.util.Map<K,V>	Maps.asMap(java.util.Set<K> set, Function<? super K,V> function)	Returns a live Map view whose keys are the contents of set and whose values are computed on demand using function.
static <K,V> java.util.SortedMap<K,V>	Maps.asMap(java.util.SortedSet<K> set, Function<? super K,V> function)	Returns a view of the sorted set as a map, mapping keys from the set according to the specified function.
(package private) static <K,V> java.util.Iterator<java.util.Map.Entry<K,V>>	Maps.asMapEntryIterator(java.util.Set<K> set, Function<? super K,V> function)
static <E,K extends java.lang.Comparable> int	SortedLists.binarySearch(java.util.List<E> list, Function<? super E,K> keyFunction, K key, SortedLists.KeyPresentBehavior presentBehavior, SortedLists.KeyAbsentBehavior absentBehavior)	Binary searches the list for the specified key, using the specified key function.
static <E,K> int	SortedLists.binarySearch(java.util.List<E> list, Function<? super E,K> keyFunction, K key, java.util.Comparator<? super K> keyComparator, SortedLists.KeyPresentBehavior presentBehavior, SortedLists.KeyAbsentBehavior absentBehavior)	Binary searches the list for the specified key, using the specified key function.
<K> ImmutableListMultimap<K,E>	FluentIterable.index(Function<? super E,K> keyFunction)	Creates an index ImmutableListMultimap that contains the results of applying a specified function to each item in this FluentIterable of values.
static <K,V> ImmutableListMultimap<K,V>	Multimaps.index(java.lang.Iterable<V> values, Function<? super V,K> keyFunction)	Creates an index ImmutableListMultimap that contains the results of applying a specified function to each item in an Iterable of values.
static <K,V> ImmutableListMultimap<K,V>	Multimaps.index(java.util.Iterator<V> values, Function<? super V,K> keyFunction)	Creates an index ImmutableListMultimap that contains the results of applying a specified function to each item in an Iterator of values.
<F> Ordering<F>	Ordering.onResultOf(Function<F,? extends T> function)	Returns a new ordering on F which orders elements by first applying a function to them, then comparing those results using this.
<V> ImmutableMap<E,V>	FluentIterable.toMap(Function<? super E,V> valueFunction)	Returns an immutable map whose keys are the distinct elements of this FluentIterable and whose value for each key was computed by valueFunction.
static <K,V> ImmutableMap<K,V>	Maps.toMap(java.lang.Iterable<K> keys, Function<? super K,V> valueFunction)	Returns an immutable map whose keys are the distinct elements of keys and whose value for each key was computed by valueFunction.
static <K,V> ImmutableMap<K,V>	Maps.toMap(java.util.Iterator<K> keys, Function<? super K,V> valueFunction)	Returns an immutable map whose keys are the distinct elements of keys and whose value for each key was computed by valueFunction.
static <F,T> java.util.Collection<T>	Collections2.transform(java.util.Collection<F> fromCollection, Function<? super F,T> function)	Returns a collection that applies function to each element of fromCollection.
<T> FluentIterable<T>	FluentIterable.transform(Function<? super E,T> function)	Returns a fluent iterable that applies function to each element of this fluent iterable.
static <F,T> java.lang.Iterable<T>	Iterables.transform(java.lang.Iterable<F> fromIterable, Function<? super F,? extends T> function)	Returns a view containing the result of applying function to each element of fromIterable.
static <F,T> java.util.Iterator<T>	Iterators.transform(java.util.Iterator<F> fromIterator, Function<? super F,? extends T> function)	Returns a view containing the result of applying function to each element of fromIterator.
static <F,T> java.util.List<T>	Lists.transform(java.util.List<F> fromList, Function<? super F,? extends T> function)	Returns a list that applies function to each element of fromList.
<T> FluentIterable<T>	FluentIterable.transformAndConcat(Function<? super E,? extends java.lang.Iterable<? extends T>> function)	Applies function to each element of this fluent iterable and returns a fluent iterable with the concatenated combination of results.
static <K,V1,V2> java.util.Map<K,V2>	Maps.transformValues(java.util.Map<K,V1> fromMap, Function<? super V1,V2> function)	Returns a view of a map where each value is transformed by a function.
static <K,V1,V2> java.util.NavigableMap<K,V2>	Maps.transformValues(java.util.NavigableMap<K,V1> fromMap, Function<? super V1,V2> function)	Returns a view of a navigable map where each value is transformed by a function.
static <K,V1,V2> java.util.SortedMap<K,V2>	Maps.transformValues(java.util.SortedMap<K,V1> fromMap, Function<? super V1,V2> function)	Returns a view of a sorted map where each value is transformed by a function.
static <K,V1,V2> ListMultimap<K,V2>	Multimaps.transformValues(ListMultimap<K,V1> fromMultimap, Function<? super V1,V2> function)	Returns a view of a ListMultimap where each value is transformed by a function.
static <K,V1,V2> Multimap<K,V2>	Multimaps.transformValues(Multimap<K,V1> fromMultimap, Function<? super V1,V2> function)	Returns a view of a multimap where each value is transformed by a function.
static <R,C,V1,V2> Table<R,C,V2>	Tables.transformValues(Table<R,C,V1> fromTable, Function<? super V1,V2> function)	Returns a view of a table where each value is transformed by a function.
<K> ImmutableMap<K,E>	FluentIterable.uniqueIndex(Function<? super E,K> keyFunction)	Returns a map with the contents of this FluentIterable as its values, indexed by keys derived from those values.
static <K,V> ImmutableMap<K,V>	Maps.uniqueIndex(java.lang.Iterable<V> values, Function<? super V,K> keyFunction)	Returns a map with the given values, indexed by keys derived from those values.
static <K,V> ImmutableMap<K,V>	Maps.uniqueIndex(java.util.Iterator<V> values, Function<? super V,K> keyFunction)	Returns a map with the given values, indexed by keys derived from those values.
static <T> TreeTraverser<T>	TreeTraverser.using(Function<T,? extends java.lang.Iterable<T>> nodeToChildrenFunction)	Deprecated. Use Traverser.forTree(com.google.common.graph.SuccessorsFunction<N>) instead.

Constructors in com.google.common.collect with parameters of type Function

Constructor	Description
AsMapView(java.util.Set<K> set, Function<? super K,V> function)
ByFunctionOrdering(Function<F,? extends T> function, Ordering<T> ordering)
NavigableAsMapView(java.util.NavigableSet<K> ks, Function<? super K,V> vFunction)
SortedAsMapView(java.util.SortedSet<K> set, Function<? super K,V> function)
TransformedCollection(java.util.Collection<F> fromCollection, Function<? super F,? extends T> function)
TransformedTable(Table<R,C,V1> fromTable, Function<? super V1,V2> function)
TransformingRandomAccessList(java.util.List<F> fromList, Function<? super F,? extends T> function)
TransformingSequentialList(java.util.List<F> fromList, Function<? super F,? extends T> function)

Uses of Function in com.google.common.escape

Fields in com.google.common.escape declared as Function

Modifier and Type	Field	Description
private Function<java.lang.String,java.lang.String>	Escaper.asFunction

Methods in com.google.common.escape that return Function

Modifier and Type	Method	Description
Function<java.lang.String,java.lang.String>	Escaper.asFunction()	Returns a Function that invokes Escaper.escape(String) on this escaper.

Uses of Function in com.google.common.graph

Methods in com.google.common.graph that return Function

Modifier and Type	Method	Description
private static <N,E> Function<E,N>	ImmutableNetwork.adjacentNodeFn(Network<N,E> network, N node)
private static <N,E> Function<E,N>	ImmutableNetwork.sourceNodeFn(Network<N,E> network)
private static <N,E> Function<E,N>	ImmutableNetwork.targetNodeFn(Network<N,E> network)

Methods in com.google.common.graph with parameters of type Function

Modifier and Type	Method	Description
(package private) static <N,V> DirectedGraphConnections<N,V>	DirectedGraphConnections.ofImmutable(N thisNode, java.lang.Iterable<EndpointPair<N>> incidentEdges, Function<N,V> successorNodeToValueFn)

Uses of Function in com.google.common.primitives

Classes in com.google.common.primitives that implement Function

Modifier and Type	Class	Description
private static class	Doubles.DoubleConverter
private static class	Floats.FloatConverter
private static class	Ints.IntConverter
private static class	Longs.LongConverter
private static class	Shorts.ShortConverter

Uses of Function in com.google.common.reflect

Fields in com.google.common.reflect declared as Function

Modifier and Type	Field	Description
private static Function<java.lang.reflect.Type,java.lang.String>	Types.TYPE_NAME	Class#toString without the "class " and "interface " prefixes

Uses of Function in com.google.common.testing

Methods in com.google.common.testing with parameters of type Function

Modifier and Type	Method	Description
private static <T> void	ForwardingWrapperTester.testEquals(java.lang.Class<T> interfaceType, Function<? super T,? extends T> wrapperFunction)
private static <T> void	ForwardingWrapperTester.testExceptionPropagation(java.lang.Class<T> interfaceType, java.lang.reflect.Method method, Function<? super T,? extends T> wrapperFunction)
<T> void	ForwardingWrapperTester.testForwarding(java.lang.Class<T> interfaceType, Function<? super T,? extends T> wrapperFunction)	Tests that the forwarding wrapper returned by wrapperFunction properly forwards method calls with parameters passed as is, return value returned as is, and exceptions propagated as is.
(package private) void	ForwardingWrapperTester.InteractionTester.testInteraction(Function<? super T,? extends T> wrapperFunction)
private static <T> void	ForwardingWrapperTester.testSuccessfulForwarding(java.lang.Class<T> interfaceType, java.lang.reflect.Method method, Function<? super T,? extends T> wrapperFunction)
private static <T> void	ForwardingWrapperTester.testToString(java.lang.Class<T> interfaceType, Function<? super T,? extends T> wrapperFunction)

Uses of Function in com.google.common.util.concurrent

Fields in com.google.common.util.concurrent declared as Function

Modifier and Type	Field	Description
private static Function<ClosingFuture<?>,FluentFuture<?>>	ClosingFuture.Combiner.INNER_FUTURE

Methods in com.google.common.util.concurrent with parameters of type Function

Modifier and Type	Method	Description
<X extends java.lang.Throwable> FluentFuture<V>	FluentFuture.catching(java.lang.Class<X> exceptionType, Function<? super X,? extends V> fallback, java.util.concurrent.Executor executor)	Returns a Future whose result is taken from this Future or, if this Future fails with the given exceptionType, from the result provided by the fallback.
static <V,X extends java.lang.Throwable> ListenableFuture<V>	Futures.catching(ListenableFuture<? extends V> input, java.lang.Class<X> exceptionType, Function<? super X,? extends V> fallback, java.util.concurrent.Executor executor)	Returns a Future whose result is taken from the given primary input or, if the primary input fails with the given exceptionType, from the result provided by the fallback.
(package private) static <V,X extends java.lang.Throwable> ListenableFuture<V>	AbstractCatchingFuture.create(ListenableFuture<? extends V> input, java.lang.Class<X> exceptionType, Function<? super X,? extends V> fallback, java.util.concurrent.Executor executor)
(package private) static <I,O> ListenableFuture<O>	AbstractTransformFuture.create(ListenableFuture<I> input, Function<? super I,? extends O> function, java.util.concurrent.Executor executor)
(package private) V	AbstractCatchingFuture.CatchingFuture.doFallback(Function<? super X,? extends V> fallback, X cause)
(package private) O	AbstractTransformFuture.TransformFuture.doTransform(Function<? super I,? extends O> function, I input)
static <I,O> java.util.concurrent.Future<O>	Futures.lazyTransform(java.util.concurrent.Future<I> input, Function<? super I,? extends O> function)	Like Futures.transform(ListenableFuture, Function, Executor) except that the transformation function is invoked on each call to get() on the returned future.
<T> FluentFuture<T>	FluentFuture.transform(Function<? super V,T> function, java.util.concurrent.Executor executor)	Returns a new Future whose result is derived from the result of this Future.
static <I,O> ListenableFuture<O>	Futures.transform(ListenableFuture<I> input, Function<? super I,? extends O> function, java.util.concurrent.Executor executor)	Returns a new Future whose result is derived from the result of the given Future.

Constructors in com.google.common.util.concurrent with parameters of type Function

Constructor	Description
CatchingFuture(ListenableFuture<? extends V> input, java.lang.Class<X> exceptionType, Function<? super X,? extends V> fallback)
TransformFuture(ListenableFuture<? extends I> inputFuture, Function<? super I,? extends O> function)