package foundation.dao.preload;

import java.util.Iterator;
import java.util.List;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import foundation.util.MapList;

public class Bucket<T> implements Iterable<T> {

	protected static Logger logger;
	protected MapList<String, T> items;
	protected CachedOne cached;
	
	
	static {
		logger = LogManager.getLogger(Bucket.class);
	}
	
	public Bucket() {
		items = new MapList<String, T>();
		cached = new CachedOne();
	}
	
	public void loadOne(String key, T one) {
		items.add(key, one);
		cached.set(key, one);
	}
	
	@SuppressWarnings("unchecked")
	public T getCachedOne(String key) {
		T result = null;
		
		if (cached.equalsKey(key)) {
			result = (T)cached.get();
			return result;
		}
		
		result = items.get(key);
		cached.set(key, result);
		return result;
	}
	
	public T get(String key) {
		return items.get(key);
	}
	
	public boolean contains(String key) {
		return items.contains(key);
	}

	public void remove(String key) {
		items.remove(key);
		cached.clear();
	}
	
	@Override
	public Iterator<T> iterator() {
		return items.iterator();
	}

	public void activate() {
		
	}

	public List<T> getList() {
		return items.getItemList();
	}

	public int size() {
		return items.size();
	}
	
}