org.jclouds.util
Class Suppliers2

java.lang.Object
  org.jclouds.util.Suppliers2

public class Suppliers2
extends Object

Author:

Adrian Cole

Constructor Summary

Suppliers2()

Method Summary

static <F,T> com.google.common.base.Supplier<T>	compose(com.google.common.base.Function<? super F,T> function, com.google.common.base.Supplier<F> supplier)
static <K,V> com.google.common.base.Supplier<V>	getLastValueInMap(com.google.common.base.Supplier<Map<K,com.google.common.base.Supplier<V>>> input)
static com.google.common.io.OutputSupplier<OutputStream>	newOutputStreamSupplier(OutputStream output) converts an OutputStream to an OutputSupplier
static <X> com.google.common.base.Function<X,com.google.common.base.Supplier<X>>	ofInstanceFunction()
static <T,X extends Throwable> com.google.common.base.Supplier<T>	onThrowable(com.google.common.base.Supplier<T> unlessThrowable, Class<X> throwable, com.google.common.base.Supplier<T> fallback) if a throwable of certain type is encountered on getting the first value, use the fallback.
static <T> com.google.common.base.Supplier<T>	or(com.google.common.base.Supplier<T> unlessNull, com.google.common.base.Supplier<T> fallback) returns the value of the first supplier, or the value of the fallback, if the unlessNull is null.
static <K,V> com.google.common.base.Supplier<V>	valueForKey(com.google.common.base.Supplier<Map<K,com.google.common.base.Supplier<V>>> input, com.google.common.base.Supplier<K> key) Supplies a value that corresponds to a particular key in a map, or null, if not found

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Suppliers2

public Suppliers2()

Method Detail

valueForKey

public static <K,V> com.google.common.base.Supplier<V> valueForKey(com.google.common.base.Supplier<Map<K,com.google.common.base.Supplier<V>>> input,
                                                                   com.google.common.base.Supplier<K> key)

Supplies a value that corresponds to a particular key in a map, or null, if not found

getLastValueInMap

public static <K,V> com.google.common.base.Supplier<V> getLastValueInMap(com.google.common.base.Supplier<Map<K,com.google.common.base.Supplier<V>>> input)

ofInstanceFunction

public static <X> com.google.common.base.Function<X,com.google.common.base.Supplier<X>> ofInstanceFunction()

newOutputStreamSupplier

public static com.google.common.io.OutputSupplier<OutputStream> newOutputStreamSupplier(OutputStream output)

converts an OutputStream to an OutputSupplier

or

@Beta
public static <T> com.google.common.base.Supplier<T> or(com.google.common.base.Supplier<T> unlessNull,
                                                             com.google.common.base.Supplier<T> fallback)

returns the value of the first supplier, or the value of the fallback, if the unlessNull is null.

onThrowable

@Beta
public static <T,X extends Throwable> com.google.common.base.Supplier<T> onThrowable(com.google.common.base.Supplier<T> unlessThrowable,
                                                                                          Class<X> throwable,
                                                                                          com.google.common.base.Supplier<T> fallback)

if a throwable of certain type is encountered on getting the first value, use the fallback.

compose

public static <F,T> com.google.common.base.Supplier<T> compose(com.google.common.base.Function<? super F,T> function,
                                                               com.google.common.base.Supplier<F> supplier)