LingualResource.java

package com.github.walker.easydb.assistant;

import java.util.HashMap;
import java.util.Locale;
import java.util.ResourceBundle;

/**
 * This class provides multiple languages for message.
 *
 * @author Huqingmiao
 */
public class LingualResource {

    private static HashMap<String, LingualResource> instances = new HashMap<String, LingualResource>(2); // instance
    // pool

    private String baseFileName = null;

    private ResourceBundle resourceBundle = null;

    /**
     * @param languageCode 语种代码
     * @param regionCode   地区代码
     */
    private LingualResource(String languageCode, String regionCode) {

        String localeCode = makeLocaleCode(languageCode, regionCode);
        Locale locale = new Locale(languageCode, regionCode);

        baseFileName = "res";

        // load the resource file, such as：res_en_US.properties
        resourceBundle = ResourceBundle.getBundle(baseFileName, locale);

        // put the instance into pool
        instances.put(localeCode, this);
    }

    /**
     * 取得某语种的资源信息提取类
     *
     * @param language 语种代码
     * @param region   地区代码
     */
    public synchronized static LingualResource getInstance(String language, String region) {
        String tmpCode = makeLocaleCode(language, region);

        if (instances.containsKey(tmpCode)) {
            return (LingualResource) instances.get(tmpCode);
        }

        return new LingualResource(language, region);

    }

    public String getLocaleString(String code) {
        return resourceBundle.getString(code);
    }

    private static String makeLocaleCode(String language, String region) {
        return language + "_" + region;
    }
}