/**
* Wraps a Supplier in such a way the it will push the current execution context before any code
* gets executed and pop it afterwards
*
* @param w the functional interface to be wrapped
* @return wrapped object if there is a current execution context, or the same object if not.
*/
public static <T> Supplier<T> wrap(Supplier<T> w) {
TaskContext c = current();
if (c != null) {
return () -> {
c.push();
try {
return w.get();
} finally {
c.pop();
}
};
}
return w;
}
/**
* Wraps a Consumer in such a way the it will push the current execution context before any code
* gets executed and pop it afterwards
*
* @param w the functional interface to be wrapped
* @return wrapped object if there is a current execution context, or the same object if not.
*/
public static <T> Consumer<T> wrap(Consumer<T> w) {
TaskContext c = current();
if (c != null) {
return (t) -> {
c.push();
try {
w.accept(t);
} finally {
c.pop();
}
};
}
return w;
}
/**
* Wraps a Function in such a way the it will push the current execution context before any code
* gets executed and pop it afterwards
*
* @param w the functional interface to be wrapped
* @return wrapped object if there is a current execution context, or the same object if not.
*/
public static <T, U, R> BiFunction<T, U, R> wrap(BiFunction<T, U, R> w) {
TaskContext c = current();
if (c != null) {
return (t, u) -> {
c.push();
try {
return w.apply(t, u);
} finally {
c.pop();
}
};
}
return w;
}
/**
* Wraps a Runnable in such a way the it will push the current execution context before any code
* gets executed and pop it afterwards
*
* @param w the functional interface to be wrapped
* @return wrapped object if there is a current execution context, or the same object if not.
*/
public static Runnable wrap(Runnable w) {
TaskContext c = current();
if (c != null) {
return () -> {
c.push();
try {
w.run();
} finally {
c.pop();
}
};
}
return w;
}
