appsetting.java

本文论述了一个前台笔记本销售系统的开发过程

package com.set.utils;

import java.util.*;
import java.text.*;
import com.set.appframe.data.GenericValueObject;

import com.set.appframe.business.SpringBeanFactory;
import com.set.appframe.exception.*;


/**
 * AppSetting represents a collection of global settings that are shared by all
 * components in an application
 * 
 * @author Oliver Yip
 * @version 1.0, 11/04/03
 * @since 1.0
 */
public class AppSetting {
	private static String RESNAME = "ApplicationResources";
	private ResourceBundle bundle = null;

	private static DateFormat dFormat = null;
	private static DateFormat dtFormat = null;

	/**
	 * constructs a <code>AppSetting</code> object.
	 * 
	 * @param resName
	 *            name of resource bundle for the application
	 * 
	 */
	protected AppSetting(String resName) {
		RESNAME = resName;
		init();
	}

	/**
	 * specifies the locale to be used in the application
	 * 
	 * @param l
	 *            locale to be used in the application
	 * 
	 */
	public void setLocale(Locale l) {
		bundle = ResourceBundle.getBundle(RESNAME, l);
	}

	/**
	 * initializes application settings
	 * 
	 */
	public void init() {
		bundle = ResourceBundle.getBundle(RESNAME, Locale.getDefault());
		dFormat = new SimpleDateFormat(getString("app.dateformat"));
		dtFormat = new SimpleDateFormat(getString("app.datetimeformat"));
		// dFormat = new SimpleDateFormat("yyyy-MM-dd");
		// dtFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
	}

	/**
	 * returns a string from the application resource with a key
	 * 
	 * @param k
	 *            resource string key
	 * @return the resource string to retrieve
	 * 
	 */
	public String getString(String k) {
		return bundle.getString(k);
	}

	/**
	 * returns a string from the application resource with a key, and substitute
	 * in replace parameters to the resource string
	 * 
	 * @param k
	 *            resource string key
	 * @param param
	 *            replace parameters to substitute in resource string
	 * @return the resource string to retrieve, with replace parameters
	 *         substituted
	 * 
	 */
	public String getString(String k, String[] param) {
		return MessageFormat.format(bundle.getString(k), param);
	}

	/**
	 * returns the date format used in the application, based on application
	 * setting
	 * 
	 * @return the date format used in the application
	 * 
	 */
	public DateFormat getDateFormat() {
		return dFormat;
	}

	/**
	 * formats a date value to a display string based on application setting
	 * 
	 * @return formatted display string for the date
	 * 
	 */
	public String dFormat(Date d) {
		return dFormat.format(d);
	}

	/**
	 * returns the date/time format used in the application, based on the
	 * application setting
	 * 
	 * @return the date/time format used in the application
	 * 
	 */
	public DateFormat getDateTimeFormat() {
		return dtFormat;
	}

	/**
	 * formats a date/time value to a display string based on application
	 * setting
	 * 
	 * @return formatted display string for the date/time
	 * 
	 */
	public String dtFormat(Date d) {
		return dtFormat.format(d);
	}

	/**
	 * returns the current date/time in the application context.
	 * 
	 * @return the current date/time format in the application context
	 * 
	 */
	public Date getApplicationDate() {
		return new Date();
	}

}