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package se.l4.silo.results;

import java.util.Collections;
import java.util.Iterator;

import se.l4.silo.FetchResult;

/**
 * A {@link FetchResult} that is always empty.
 *
 * @author Andreas Holstenson
 *
 * @param 
 */
public class EmptyFetchResult
	implements FetchResult
{
	public static final EmptyFetchResult INSTANCE = new EmptyFetchResult<>();

	private EmptyFetchResult()
	{
	}

	@Override
	public Iterator iterator()
	{
		return Collections.emptyIterator();
	}

	@Override
	public long getSize()
	{
		return 0;
	}

	@Override
	public long getOffset()
	{
		return 0;
	}

	@Override
	public long getLimit()
	{
		return -1;
	}

	@Override
	public long getTotal()
	{
		return 0;
	}

	@Override
	public boolean isEmpty()
	{
		return true;
	}

	@Override
	public void close()
	{
	}

	@Override
	public String toString()
	{
		return "EmptyFetchResult{}";
	}
}