tickersymbol.java

VHDL制作的ann的code

/*
 * Encog Neural Network and Bot Library for Java v1.x
 * http://www.heatonresearch.com/encog/
 * http://code.google.com/p/encog-java/
 * 
 * Copyright 2008, Heaton Research Inc., and individual contributors.
 * See the copyright.txt in the distribution for a full listing of 
 * individual contributors.
 *
 * This 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 software 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.encog.neural.data.market;

/**
 * Holds a ticker symbol and exchange. The exchange is for external use only and
 * is not used by Encog currently.
 * 
 * @author jheaton
 * 
 */
public class TickerSymbol {
	
	/**
	 * The ticker symbol.
	 */
	private final String symbol;
	
	/**
	 * The exchange.
	 */
	private final String exchange;

	/**
	 * Construct a ticker symbol with no exchange.
	 * @param symbol The ticker symbol.
	 */
	public TickerSymbol(final String symbol) {
		this.symbol = symbol;
		this.exchange = null;
	}

	/**
	 * Construct a ticker symbol with exchange.
	 * @param symbol The ticker symbol.
	 * @param exchange The exchange.
	 */
	public TickerSymbol(final String symbol, final String exchange) {
		this.symbol = symbol;
		this.exchange = exchange;
	}

	/**
	 * Determine if two ticker symbols equal each other.
	 * @param other The other ticker symbol.
	 * @return True if the two symbols equal.
	 */
	public boolean equals(final TickerSymbol other) {
		// if the symbols do not even match then they are not equal
		if (!other.getSymbol().equals(getSymbol())) {
			return false;
		}

		// if the symbols match then we need to compare the exchanges
		if (other.getExchange() == null && other.getExchange() == null) {
			return true;
		}

		if (other.getExchange() == null || other.getExchange() == null) {
			return false;
		}

		return other.getExchange().equals(getExchange());
	}

	/**
	 * @return the exchange
	 */
	public String getExchange() {
		return this.exchange;
	}

	/**
	 * @return the symbol
	 */
	public String getSymbol() {
		return this.symbol;
	}

	/**
	 * Generate a valid hash code.
	 * @return The hash code.
	 */
	public int hashCode() {
		final StringBuilder str = new StringBuilder(getSymbol());
		if (this.exchange != null) {
			str.append(this.exchange);
		}
		return str.hashCode();
	}

}