com.bstek.dorado.core.resource.DefaultResourceManager.java Source code

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Here is the source code for com.bstek.dorado.core.resource.DefaultResourceManager.java

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/*
 * This file is part of Dorado 7.x (http://dorado7.bsdn.org).
 * 
 * Copyright (c) 2002-2012 BSTEK Corp. All rights reserved.
 * 
 * This file is dual-licensed under the AGPLv3 (http://www.gnu.org/licenses/agpl-3.0.html) 
 * and BSDN commercial (http://www.bsdn.org/licenses) licenses.
 * 
 * If you are unsure which license is appropriate for your use, please contact the sales department
 * at http://www.bstek.com/contact.
 */

package com.bstek.dorado.core.resource;

import java.io.InputStream;
import java.util.Locale;
import java.util.Properties;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.bstek.dorado.core.io.Resource;
import com.bstek.dorado.core.io.ResourceUtils;

/**
 * @author Benny Bao (mailto:benny.bao@bstek.com)
 * @since 2012-5-8
 */
public class DefaultResourceManager extends AbstractResourceManagerSupport implements ResourceManager {
    private static final Log logger = LogFactory.getLog(DefaultResourceManager.class);
    private static final String RESOURCE_FILE_SUFFIX = ".properties";

    private String bundleName;

    public void init(String bundleName) {
        this.bundleName = bundleName;
    }

    private void checkBundleName() {
        if (StringUtils.isEmpty(bundleName)) {
            throw new IllegalArgumentException("ResourceManager not initilized.");
        }
    }

    protected ResourceBundle getBundle(Locale locale) throws Exception {
        ResourceBundle bundle = null;
        Resource resource = findResource(locale);
        if (resource != null) {
            InputStream in = resource.getInputStream();
            try {
                Properties properties = new Properties();
                properties.load(in);
                bundle = new DefaultResourceBundle(properties);
            } finally {
                in.close();
            }
        }
        // else {
        // throw new FileNotFoundException(
        // "Can not found resource file for \"" + bundleName + "\".");
        // }
        return bundle;
    }

    protected Resource findResource(Locale locale) throws Exception {
        Resource resource = null;

        String path = StringUtils.replace(bundleName, ".", "/");
        if (locale != null) {
            String localeSuffix = '.' + locale.toString();
            resource = ResourceUtils.getResource(path + localeSuffix + RESOURCE_FILE_SUFFIX);
            if (resource != null && resource.exists()) {
                return resource;
            }
        }

        resource = ResourceUtils.getResource(path + RESOURCE_FILE_SUFFIX);
        if (resource != null && resource.exists()) {
            return resource;
        }

        return null;
    }

    public ResourceBundle getBundle() throws Exception {
        checkBundleName();
        Locale locale = getLocale();
        return getBundle(locale);
    }

    public String getString(String path, Object... args) {
        try {
            checkBundleName();

            Locale locale = getLocale();
            String result = null;
            ResourceBundle bundle = getBundle(locale);
            if (bundle != null) {
                result = bundle.getString(path, args);
            }
            if (result == null) {
                result = getString(locale, path, args);
            }
            return result;
        } catch (Exception e) {
            logger.error(e, e);
            return "Get Resource Error: \"" + bundleName + '/' + path + "\"";
        }
    }
}