/* * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.smartcardio; import java.util.*; /** * The TerminalFactorySpi class defines the service provider interface. * Applications do not access this class directly, instead see * {@linkplain TerminalFactory}. * *
Service providers that want to write a new implementation should define
* a concrete subclass of TerminalFactorySpi with a constructor that takes
* an Object
as parameter. That class needs to be registered
* in a {@linkplain java.security.Provider}. The engine
* {@linkplain java.security.Provider.Service#getType type} is
* TerminalFactory
.
* Service providers also need to implement subclasses of the abstract classes
* {@linkplain CardTerminals}, {@linkplain CardTerminal}, {@linkplain Card},
* and {@linkplain CardChannel}.
*
*
For example: *
file MyProvider.java: * * package com.somedomain.card; * * import java.security.Provider; * * public class MyProvider extends Provider { * public MyProvider() { * super("MyProvider", 1.0d, "Smart Card Example"); * put("TerminalFactory.MyType", "com.somedomain.card.MySpi"); * } * } * *file MySpi.java * * package com.somedomain.card; * * import javax.smartcardio.*; * * public class MySpi extends TerminalFactoySpi { * public MySpi(Object parameter) { * // initialize as appropriate * } * protected CardTerminals engineTerminals() { * // add implementation code here * } * } ** * @see TerminalFactory * @see java.security.Provider * * @since 1.6 * @author Andreas Sterbenz * @author JSR 268 Expert Group */ public abstract class TerminalFactorySpi { /** * Constructs a new TerminalFactorySpi object. * *
This class is part of the service provider interface and not accessed * directly by applications. Applications * should use TerminalFactory objects, which can be obtained by calling * one of the * {@linkplain TerminalFactory#getInstance TerminalFactory.getInstance()} * methods. * *
Concrete subclasses should define a constructor that takes an
* Object
as parameter. It will be invoked when an
* application calls one of the {@linkplain TerminalFactory#getInstance
* TerminalFactory.getInstance()} methods and receives the params
* object specified by the application.
*/
protected TerminalFactorySpi() {
// empty
}
/**
* Returns the CardTerminals created by this factory.
*
* @return the CardTerminals created by this factory.
*/
protected abstract CardTerminals engineTerminals();
}