Interface Attribute<T>

  • Type Parameters:
    T - the type of the value it holds.

    public interface Attribute<T>
    An attribute which allows to store a value reference. It may be updated atomically and so is thread-safe.
    • Method Detail

      • get

        T get()
        Returns the current value, which may be null
      • set

        void set​(T value)
        Sets the value
      • getAndSet

        T getAndSet​(T value)
        Atomically sets to the given value and returns the old value which may be null if non was set before.
      • setIfAbsent

        T setIfAbsent​(T value)
        Atomically sets to the given value if this Attribute's value is null. If it was not possible to set the value as it contains a value it will just return the current value.
      • compareAndSet

        boolean compareAndSet​(T oldValue,
                              T newValue)
        Atomically sets the value to the given updated value if the current value == the expected value. If it the set was successful it returns true otherwise false.