JUniform.java

/*
 * Created by Andrey Cherkashin (acherkashin)
 * http://acherkashin.me
 * 
 * License
 * Copyright (c) 2015 Andrey Cherkashin
 * The project released under the MIT license: http://opensource.org/licenses/MIT
 */
package com.juniform;

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Logger;

/**
 *
 * @author acherkashin
 */
public class JUniform
{
	private final static Map<String,IJUniformPacker> _instances = new HashMap<>();
	
	public final static String PACKER_TYPE_STRING       = "string";
	public final static String PACKER_TYPE_JSON         = "json";
	public final static String PACKER_TYPE_MESSAGE_PACK = "msgpack";
	
	public final static String[] SUPPORTED_FORMATS = new String[] {
		PACKER_TYPE_STRING,
		PACKER_TYPE_JSON, 
		PACKER_TYPE_MESSAGE_PACK
	};
	
	/**
	 * Returns new instance of a specific packer
	 * @param type
	 * @return 
	 */
	public static IJUniformPacker newPackerInstance(String type) {
		switch(type) {
			case PACKER_TYPE_STRING:
				return new JUniformPackerString();
			case PACKER_TYPE_JSON:
				return new JUniformPackerJSON();
			case PACKER_TYPE_MESSAGE_PACK:
				return new JUniformPackerMessagePack();
		}
		Logger.getLogger(JUniform.class.getName()).warning("Failed to create packer because the type in unknown: "+type);
		return null;
	}
	
	/**
	 * Returns static global instance of a specific packer
	 * @param type
	 * @return 
	 */
	public static IJUniformPacker getPackerInstance(String type) {
		if (false == JUniform.isFormatSupported(type)) {
			Logger.getLogger(JUniform.class.getName()).warning("Failed to create packer because the type is not supported: "+type);
			return null;
		}
		if (false == _instances.containsKey(type)) {
			_instances.put(type, JUniform.newPackerInstance(type));
		}
		return _instances.get(type);
	}

	public static boolean isFormatSupported(String format) {
		return Arrays.asList(SUPPORTED_FORMATS).contains(format);
	}
}