/**
* Copyright (C) 2002-2012 The FreeCol Team
*
* This file is part of FreeCol.
*
* FreeCol is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* FreeCol 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with FreeCol. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.freecol.common.model;
import org.freecolandroid.xml.stream.XMLStreamException;
import org.freecolandroid.xml.stream.XMLStreamReader;
import org.freecolandroid.xml.stream.XMLStreamWriter;
/**
* This class contains the last sale a player has made, by Settlement
* and GoodsType.
*/
public final class LastSale extends FreeColObject {
// When a sale was made.
private Turn when;
// The price per unit returned from the sale.
private int price;
/**
* Empty constructor for Player.
*/
public LastSale() {
}
/**
* Make a new LastSale record.
*
* @param where The <code>Location</code> of the sale.
* @param what The <code>GoodsType</code> sold.
* @param when In which <code>Turn</code> the sale occurred.
* @param price The per-unit price of the sale.
*/
public LastSale(Location where, GoodsType what,
Turn when, int price) {
this(makeKey(where, what), when, price);
}
/**
* Make a new LastSale record.
*
* @param id The identifier (encoding Settlement and GoodsType).
* @param when In which <code>Turn</code> the sale occurred.
* @param price The per-unit price of the sale.
*/
public LastSale(String id, Turn when, int price) {
setId(id);
this.when = when;
this.price = price;
}
/**
* Get the <code>Turn</code> when the sale was made.
*
* @return The <code>Turn</code> when the sale was made.
*/
public Turn getWhen() {
return when;
}
/**
* Get the price from the sale.
*
* @return The price from the sale.
*/
public int getPrice() {
return price;
}
/**
* Make a String to be used as a key for looking up sales.
*
* @param where The <code>Location</code> of the sale.
* @param what The <code>GoodsType</code> sold.
*
* @return A key string.
*/
public static String makeKey(Location where, GoodsType what) {
return where.getId() + "-" + what.getId();
}
/**
* This method writes an XML-representation of this object to
* the given stream.
*
* @param out The target stream.
* @throws XMLStreamException if there are any problems with the stream.
*/
protected void toXMLImpl(XMLStreamWriter out) throws XMLStreamException {
super.toXML(out, getXMLElementTagName());
}
/**
* Write the children of this object to a stream.
*
* @param out The target stream.
* @throws XMLStreamException if there are any problems writing
* to the stream.
*/
@Override
protected void writeAttributes(XMLStreamWriter out)
throws XMLStreamException {
super.writeAttributes(out);
out.writeAttribute("when", Integer.toString(when.getNumber()));
out.writeAttribute("price", Integer.toString(price));
}
/**
* Initialize this object from an XML-representation of this object.
*
* @param in The input stream with the XML.
* @throws XMLStreamException if there are any problems with the stream.
*/
public void readFromXMLImpl(XMLStreamReader in) throws XMLStreamException {
super.readAttributes(in);
when = new Turn(getAttribute(in, "when", 0));
price = getAttribute(in, "price", 0);
super.readChildren(in);
}
/**
* Debug helper.
*/
@Override
public String toString() {
return getXMLElementTagName() + "-" + getId() + "-"
+ when.toString() + "-" + Integer.toString(price);
}
/**
* Returns the tag name of the root element representing this object.
*
* @return "lastSale"
*/
public static String getXMLElementTagName() {
return "lastSale";
}
}