/**
 * same as {@link SwitchCase} but it emits only one item which is the result of the
 * {@link Function} mapped to the key matching the first emitted value
 * <p>
 * sample code :
 * <p>
 * {@code List<Integer> list = Arrays.asList(1, 2, 3, 4);}<br>
 * {@code Map<Integer, Function<Integer, String>> caseBlocks = new HashMap<>(2);}<br>
 * {@code caseBlocks.put(2, (i) -> "TWO SELECTED");}<br>
 * {@code caseBlocks.put(3, (i) -> "THREE SELECTED");}<br>
 * <p>
 * {@code Observable.fromIterable(list)}<br>
 * {@code .lift(new SwitchCaseBreak<>(caseBlocks))}<br>
 * {@code .subscribe(System.out::println);}<br>
 * <p>
 * // result :<br>
 * TWO SELECTED<br>
 */
public class SwitchCaseBreak<T, R> extends SwitchCase<T, R> {

    public SwitchCaseBreak(Map<T, Function<T, R>> caseBlocks) {
        super(caseBlocks);
    }

    @Override
    void invokeOnNext(Observer<? super R> observer, R onNextValue) {
        super.invokeOnNext(observer, onNextValue);
        caseBlocks.clear();
    }
}