org.tinygroup.i18n.I18nMessageFactory Maven / Gradle / Ivy

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/**
 *  Copyright (c) 1997-2013, www.tinygroup.org ([email protected]).
 *
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.gnu.org/licenses/gpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.tinygroup.i18n;

import com.thoughtworks.xstream.XStream;
import org.tinygroup.commons.i18n.LocaleUtil;
import org.tinygroup.commons.tools.CollectionUtil;
import org.tinygroup.format.FormatProvider;
import org.tinygroup.format.Formater;
import org.tinygroup.format.PatternDefine;
import org.tinygroup.format.config.FormatPatternDefine;
import org.tinygroup.format.impl.DefaultPatternDefine;
import org.tinygroup.i18n.config.I18nConfiguration;
import org.tinygroup.i18n.config.I18nMessage;
import org.tinygroup.i18n.exception.I18nException;
import org.tinygroup.i18n.impl.I18nMessageContextImpl;

import java.util.*;

public final class I18nMessageFactory {
	private static Map> customizeResourceMap = new HashMap>();
	private static Map> resourceMap = new HashMap>();
	private static Locale defaultLocale = LocaleUtil.getContext().getLocale();
	private static I18nMessages i18nMessages = new I18nMessages();

	private I18nMessageFactory() {

	}

	static {
		XStream stream = new XStream();
		stream.autodetectAnnotations(true);
		stream.alias("i18n-configuration", I18nConfiguration.class);
		stream.setClassLoader(I18nConfiguration.class.getClassLoader());
		I18nConfiguration configuration = (I18nConfiguration) stream
				.fromXML(I18nMessageFactory.class
						.getResourceAsStream("/I18nConfiguration.xml"));
		List i18nMessageStandards = new ArrayList();
		for (I18nMessage msg : configuration.getI18nMessageStandards()) {
			I18nMessageStandard object;
			try {
				object = getObject(msg.getClassName());
				i18nMessageStandards.add(object);
			} catch (I18nException e) {
				throw new RuntimeException(e);
			}
		}
		List i18nMessageContexts = new ArrayList();
		try {
			Formater formatter = getObject(configuration.getFormater()
					.getClassName());
			PatternDefine patternHandle = new DefaultPatternDefine();
			FormatPatternDefine formatPatternDefine = configuration
					.getFormater().getFormatPatternDefine();
			patternHandle.setPrefixPatternString(formatPatternDefine
					.getPrefixPatternString());
			patternHandle.setPatternString(formatPatternDefine
					.getPatternString());
			patternHandle.setPostfixPatternString(formatPatternDefine
					.getPostfixPatternString());
			formatter.setPatternHandle(patternHandle);

			Map formatProviders = new HashMap();
			for (org.tinygroup.format.config.FormatProvider formatProvider : configuration
					.getFormater().getFormatProviders()) {
				FormatProvider fp = getObject(formatProvider.getClassName());
				formatProviders.put(formatProvider.getArea(), fp);
			}
			formatter.setFormatProviders(formatProviders);
			for (I18nMessage msg : configuration.getI18nMessageContexts()) {
				I18nMessageContextImpl object = getObject(msg.getClassName());
				i18nMessageContexts.add(object);
				object.setFormater(formatter);
			}
		} catch (I18nException e) {
			throw new RuntimeException(e);
		}
		i18nMessages.setI18nMessageStandards(i18nMessageStandards);
		i18nMessages.setI18nMessageContexts(i18nMessageContexts);
	}

	@SuppressWarnings("unchecked")
	private static  T getObject(String className) throws I18nException {
		try {
			Class clazz;
			clazz = (Class) Class.forName(className);
			return clazz.newInstance();
		} catch (Exception e) {
			throw new I18nException(e);
		}
	}

	/**
	 * 极少数的情况下，需要自己构建I18nMessages对象，此时可以由此注入
	 * 
	 * @param i18nMessages
	 */
	public static void setI18nMessages(I18nMessages i18nMessages) {
		I18nMessageFactory.i18nMessages = i18nMessages;
	}

	public static I18nMessages getI18nMessages() {
		return i18nMessages;
	}

	public static void cleanResource() {
		resourceMap.clear();
	}

	public static void addResource(Locale locale, Properties properties) {
		List propertiesList = resourceMap.get(locale);
		if (propertiesList == null) {
			propertiesList = new ArrayList();
			resourceMap.put(locale, propertiesList);
		}
		propertiesList.add(properties);
	}

	public static void removeResource(Locale locale, Properties properties) {
		List propertiesList = resourceMap.get(locale);
		if (!CollectionUtil.isEmpty(propertiesList)) {
			propertiesList.remove(properties);
		}
	}

	public static void addCustomizeResource(Locale locale, Properties properties) {
		List propertiesList = customizeResourceMap.get(locale);
		if (propertiesList == null) {
			propertiesList = new ArrayList();
			customizeResourceMap.put(locale, propertiesList);
		}
		propertiesList.add(properties);
	}

	public static void removeCustomizeResource(Locale locale,
			Properties properties) {
		List propertiesList = customizeResourceMap.get(locale);
		if (!CollectionUtil.isEmpty(propertiesList)) {
			propertiesList.remove(properties);
		}
	}

	public static String getMessage(String key) {
		return getMessage(LocaleUtil.getContext().getLocale(), key);
	}

	public static String getMessage(Locale locale, String key) {
		String message = getMessage(customizeResourceMap, locale, key);
		if (message != null) {
			return message;
		} else {
			return getMessage(resourceMap, locale, key);
		}
	}

	private static String getMessage(Map> map,
			Locale locale, String key) {
		List propertiesList = map.get(locale);
		if (propertiesList == null) {
			propertiesList = map.get(defaultLocale);
		}
		if (propertiesList != null) {
			for (Properties properties : propertiesList) {
				String value = properties.getProperty(key);
				if (value != null) {
					return value;
				}
			}
		}
		return null;
	}
}