package org.openslx.taskmanager.util;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;

public class Util
{

	private static GsonBuilder gsonBuilder = new GsonBuilder();

	/**
	 * Small helper to create a gson instance that will only handle class members with the
	 * "@Exposed" annotation. Decided against the default of explicitly excluding fields by
	 * making them transient, as you might easily forget to exclude an important field, which
	 * can in turn be a security issue.
	 * 
	 * @return Gson instance
	 */
	public static Gson explicitGsonInstance()
	{
		return gsonBuilder
				.excludeFieldsWithoutExposeAnnotation()
				.registerTypeAdapter( byte[].class, new ByteArrayDeserializer() )
				.create();
	}
	
	public static int parseInt(String str, int def)
	{
		try {
			return Integer.parseInt( str );
		} catch (Throwable t) {
			return def;
		}
	}

}