com.tonbeller.wcf.format.FormatterFactory.java Source code

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Here is the source code for com.tonbeller.wcf.format.FormatterFactory.java

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/*
 * ====================================================================
 * This software is subject to the terms of the Common Public License
 * Agreement, available at the following URL:
 *   http://www.opensource.org/licenses/cpl.html .
 * Copyright (C) 2003-2004 TONBELLER AG.
 * All Rights Reserved.
 * You must accept the terms of that agreement to use this software.
 * ====================================================================
 *
 */
package com.tonbeller.wcf.format;

import java.io.IOException;
import java.net.URL;
import java.util.Locale;

import org.apache.commons.digester.Digester;
import org.apache.commons.digester.xmlrules.DigesterLoader;
import org.apache.log4j.Logger;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import com.tonbeller.tbutils.res.Resources;
import com.tonbeller.wcf.utils.SoftException;

/**
 * Created on 15.11.2002
 *
 * @author av
 */
public class FormatterFactory {
    private static Logger logger = Logger.getLogger(FormatterFactory.class);

    private FormatterFactory() {
    }

    /**
     * returns a new instance
     */
    public static Formatter instance(Locale locale) {
        URL defaultXml = Formatter.class.getResource("config.xml");
        Formatter formatter = new Formatter();
        fillFormatter(formatter, locale, defaultXml);
        String s = Resources.instance().getOptionalString("wcf.formatter.config.xml", null);
        if (s != null) {
            URL analyseXml = Formatter.class.getResource(s);
            fillFormatter(formatter, locale, analyseXml);
        }

        return formatter;
    }

    private static void fillFormatter(Formatter formatter, Locale locale, URL configXml) {

        if (locale == null)
            locale = Locale.getDefault();

        URL rulesXml = Formatter.class.getResource("rules.xml");
        Digester digester = DigesterLoader.createDigester(rulesXml);
        digester.setValidating(false);
        digester.push(formatter);
        try {
            digester.parse(new InputSource(configXml.toExternalForm()));
        } catch (IOException e) {
            logger.error("exception caught", e);
            throw new SoftException(e);
        } catch (SAXException e) {
            logger.error("exception caught", e);
            throw new SoftException(e);
        }
        formatter.setLocale(locale);
    }

}