Constructor Detail

• StoredValue

  public StoredValue(java.lang.Object key)

  Initialize a stored value key using any Java Object.

  Parameters:

  key - unique identity of the stored value. This will be the hash key in the Prolog Environments's hash map.

• StoredValue

  public StoredValue()

  Initializes a stored value key with a new unique key.

Method Detail

• create

  public static <T> StoredValue<T> create()

  Construct a new unique key that does not match any other key.

• create

  public static <T> StoredValue<T> create(java.lang.Class<T> clazz)

  Construct a key based on a Java Class object, useful for singletons.

• getOrNull

  public T getOrNull(com.googlecode.prolog_cafe.lang.Prolog engine)

  Look up the value in the engine, or return null.

• get

  public T get(com.googlecode.prolog_cafe.lang.Prolog engine)

  Get the value from the engine, or throw SystemException.

• set

  public void set(com.googlecode.prolog_cafe.lang.Prolog engine,
         T obj)

• get

  public T get(PrologEnvironment env)

  Perform getOrNull(Prolog) on the environment's interpreter.

• set

  public void set(PrologEnvironment env,
         T obj)

  Set the value into the environment's interpreter.

• createValue

  protected T createValue(com.googlecode.prolog_cafe.lang.Prolog engine)

  Creates a value to store, returns null by default.