com.rpl.rama

Interface Navigator<T>

Type Parameters:

T - Expected type of value at start of navigation

All Superinterfaces:

RamaSerializable, java.io.Serializable

public interface Navigator<T>
extends RamaSerializable

Interface for implementing custom navigators for use in a Path

See Also:

Path documentation

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	Navigator.Next

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.Object	VOID

Method Summary

Modifier and Type	Method and Description
java.lang.Object	select(T obj, Navigator.Next next) Implements codepath for select calls.
T	transform(T obj, Navigator.Next next) Implements codepath for transform calls.

Field Detail

VOID

static final java.lang.Object VOID

Method Detail

select

java.lang.Object select(T obj,
                        Navigator.Next next)

Implements codepath for select calls. Must call next.invokeNext on each navigated value and return first navigated value. If navigates to zero values must return VOID.

Parameters:

obj - Starting value

next - Executes rest of Path

Returns:

First navigated value or VOID

See Also:

Detailed custom navigator documentation

transform

T transform(T obj,
            Navigator.Next next)

Implements codepath for transform calls. Should use next.invokeNext to update navigated values. Should return value with all navigated values updated.

Parameters:

obj - Starting value

next - Executes rest of Path

Returns:

Value with all navigated values updated

See Also:

Detailed custom navigator documentation