com.liferay.randombibleverse.util.RBVUtil.java Source code

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Here is the source code for com.liferay.randombibleverse.util.RBVUtil.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.randombibleverse.util;

import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.util.Randomizer;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.webcache.WebCacheItem;
import com.liferay.portal.kernel.webcache.WebCachePoolUtil;
import com.liferay.portal.kernel.xml.Document;
import com.liferay.portal.kernel.xml.Element;
import com.liferay.portal.kernel.xml.SAXReaderUtil;
import com.liferay.randombibleverse.model.Bible;
import com.liferay.randombibleverse.model.Verse;

import java.net.URL;

import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;

import javax.portlet.PortletPreferences;

/**
 * @author Brian Wing Shun Chan
 */
public class RBVUtil {

    public static Bible getBible(PortletPreferences preferences, Locale locale) {

        return _instance._getBible(preferences, locale);
    }

    public static Map<String, Bible> getBibles() {
        return _instance._bibles;
    }

    public static Verse getVerse(PortletPreferences preferences, Locale locale) {

        return _instance._getVerse(preferences, locale);
    }

    private RBVUtil() {
        Document document = null;

        try {
            ClassLoader classLoader = getClass().getClassLoader();

            URL url = classLoader
                    .getResource("com/liferay/randombibleverse/dependencies/" + "random_bible_verse.xml");

            document = SAXReaderUtil.read(url);
        } catch (Exception e) {
            _log.error(e, e);
        }

        _bibles = new LinkedHashMap<String, Bible>();
        _verses = new ArrayList<String>();

        Element rootElement = document.getRootElement();

        Element biblesElement = rootElement.element("bibles");

        List<Element> bibleElements = biblesElement.elements("bible");

        for (Element bibleElement : bibleElements) {
            _bibles.put(bibleElement.attributeValue("language"), new Bible(bibleElement.attributeValue("language"),
                    bibleElement.attributeValue("language-name"), bibleElement.attributeValue("version-id")));
        }

        _bibles = Collections.unmodifiableMap(_bibles);

        Element versesElement = rootElement.element("verses");

        List<Element> verseElements = versesElement.elements("verse");

        for (Element verseElement : verseElements) {
            _verses.add(verseElement.attributeValue("location"));
        }

        _verses = Collections.unmodifiableList(_verses);
    }

    private Bible _getBible(PortletPreferences preferences, Locale locale) {
        Bible bible = _bibles.get(preferences.getValue("language", StringPool.BLANK));

        if (bible == null) {
            bible = _bibles.get(locale.getLanguage());
        }

        if (bible == null) {
            bible = _bibles.get("en");
        }

        return bible;
    }

    private Verse _getVerse(PortletPreferences preferences, Locale locale) {
        Bible bible = _getBible(preferences, locale);

        int i = Randomizer.getInstance().nextInt(_verses.size());

        return _getVerse(_verses.get(i), bible.getVersionId(), bible.getLanguage());
    }

    private Verse _getVerse(String location, String versionId, String language) {

        WebCacheItem webCacheItem = new VerseWebCacheItem(location, versionId, language);

        return (Verse) WebCachePoolUtil.get(
                RBVUtil.class.getName() + StringPool.PERIOD + location + StringPool.PERIOD + versionId,
                webCacheItem);
    }

    private static Log _log = LogFactoryUtil.getLog(RBVUtil.class);

    private static RBVUtil _instance = new RBVUtil();

    private Map<String, Bible> _bibles;
    private List<String> _verses;

}