Remeber Answers Automatically

[mkutz]

When answering a Question, the Actor could remember the answer automatically.

To be considered:

Answers can be any type (incl. String, Integer etc.).
The current implementation of the Actor's memory allows only one instance of a type. Unintended overwrites of memories could happen easily.
Both would be mitigated if the Answer needs to be a Fact to be remembered.

The alternative would be changing the Actor's memory in which memories can be any type but need to be named (key/value store).

[jbadeau]

I currently prefer key value over facts but im prob biased as gauge provides builtin key value stores.

    /**
     *
     * @param name the name of memory the {@link Actor} {@link #memorizes}s
     * @param question the {@Question} the {@link Actor} {@link #memorizes}s
     * @return this {@link Actor}
     */
    public Actor memorizes(String name, Question question) {
        memories.put(name, asksFor(question));
        return this;
    }

    /**
     * @param name the name of the memory the {@link Actor} {@link #recites}s
     * @return the memory for the {@link Actor}'s {@link #memories}
     * @throws MissingMemoryException if there's no memory {@link Class} in the
     *                                {@link Actor}'s {@link #memories}
     */
    public <T> T recites(String name) {
        T memory = (T) memories.get(name);
        if (memory == null) {
            throw new MissingMemoryException(this, name);
        }
        return memory;
    }