query.java

分布式议程管理系统

/**
 * 
 */
package sysu.agenda.command;

import java.io.IOException;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import java.text.ParseException;
import java.util.Vector;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerException;

import org.xml.sax.SAXException;

import sysu.agenda.ctrl.InputHelper;
import sysu.agenda.ctrl.Service;
import sysu.agenda.ctrl.XMLHelper;
import sysu.agenda.exception.ParameterException;
import sysu.agenda.model.Meeting;

/**
 * @author Administrator
 * 
 */
public class Query extends UnicastRemoteObject implements ICommand {

	/**
	 * 
	 */
	private static final long serialVersionUID = 6884638987979744286L;

	/**
	 * 
	 */
	public Query() throws RemoteException {
		// TODO Auto-generated constructor stub
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

	}

	@Override
	public String excute(String[] args) throws ParameterException,
			ParserConfigurationException, SAXException, IOException,
			ParseException, SecurityException, TransformerException {
		// TODO Auto-generated method stub
		XMLHelper.getInstance().read();
		if (args.length == 4) {
			if (!Service.getInstance().login(args[0], args[1]))
				throw new ParameterException("User do not exist.");
			Vector<Meeting> vec = Service.getInstance().getMeetingByDate(args[0],
					InputHelper.getInstance().StingToDate(args[2]),
					InputHelper.getInstance().StingToDate(args[3]));
			String res = new String();
			for(Meeting mt : vec)
				res += mt.toString() + "\n";
			System.out.println("\nMeeting query:\n" + res);
			XMLHelper.getInstance().write(Service.getInstance().getPath());
			return "\nMeeting query:\n" + res;
		} else
			throw new ParameterException("Command invalid.");
	}
}