com.facebook.buck.util

Class Memoizer<T>

java.lang.Object

com.facebook.buck.util.Memoizer<T>

public class Memoizer<T>
extends Object

Memoizes a value, supporting passing in a supplier when getting the value, unlike MoreSuppliers.MemoizingSupplier. See WeakMemoizer for a weak reference version of this class.

Constructor Summary

Constructors

Constructor and Description
Memoizer()

Method Summary

Modifier and Type	Method and Description
T	get(java.util.function.Supplier<T> delegate)
T	get(ThrowingSupplier<T,E> delegate, Class<E> exceptionClass) Get the value and memoize the result.

Methods inherited from class java.lang.Object

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

Constructor Detail

Memoizer

public Memoizer()

Method Detail

get

public T get(java.util.function.Supplier<T> delegate)

get

public T get(ThrowingSupplier<T,E> delegate,
             Class<E> exceptionClass)
      throws E extends Exception

Get the value and memoize the result. Constructs the value if it hasn't been memoized before, or if the previously memoized value has been collected.

Parameters:

delegate - delegate for constructing the value

Returns:

the value

Throws:

E extends Exception