我是否恰当地将Java lambda用于此策略模式？

Question

我使用lambda表达式+函数来实现策略模式,我是否正确使用它？

public void deploy(WatcherConfig config) {
    performOnWatch(config, a -> {
        deployWatch(a);
        return null;
    });
}

public void delete(final WatcherConfig config) {
    performOnWatch(config, a -> {
        deleteWatch(a);
        return null;
    });
}

public void performOnWatch(WatcherConfig config, Function<WatchConfig, Void> function) {
    for (WatchConfig watchConfig : config.getWatchConfigs()) {
        List<WatchConfig> realConfigs = WatchUtils.parseWatchParameter(watchConfig);
        for(WatchConfig realWatchConfig : realConfigs) {
            function.apply(realWatchConfig);
        }
    }
}

Answer 1

performOnWatch如果实现streamWatchConfigs替换getWatchConfigs(可能返回集合),则可以使用流简化方法:

public void performOnWatch(WatcherConfig config, Consumer<WatchConfig> consumer) {
    config.streamWatchConfigs()
        .flatMap(WatchUtils::parseWatchParameters)
        .forEach(consumer::accept);
}

performOnWatch(config, this::deployWatch);
performOnWatch(config, this::deleteWatch);