/*
 * 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 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 Provider. The engine type is TerminalFactory. Service providers also need to implement subclasses of the abstract classes CardTerminals, CardTerminal, Card, and 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
     }
}

Author:
 Andreas Sterbenz,  JSR 268 Expert Group
See Also:
TerminalFactory
Provider
Since:
  1.6/**
 * The TerminalFactorySpi class defines the service provider interface.
 * Applications do not access this class directly, instead see
 * {@linkplain TerminalFactory}.
 *
 * <P>Service providers that want to write a new implementation should define
 * a concrete subclass of TerminalFactorySpi with a constructor that takes
 * an <code>Object</code> as parameter. That class needs to be registered
 * in a {@linkplain java.security.Provider}. The engine
 * {@linkplain java.security.Provider.Service#getType type} is
 * <code>TerminalFactory</code>.
 * Service providers also need to implement subclasses of the abstract classes
 * {@linkplain CardTerminals}, {@linkplain CardTerminal}, {@linkplain Card},
 * and {@linkplain CardChannel}.
 *
 * <p>For example:
 * <pre><em>file MyProvider.java:</em>
 *
 * 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");
 *     }
 * }
 *
 *<em>file MySpi.java</em>
 *
 * 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
 *      }
 * }
 * </pre>
 *
 * @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 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 
TerminalFactory.getInstance() methods and receives the params
object specified by the application.
/**
     * Constructs a new TerminalFactorySpi object.
     *
     * <p>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.
     *
     * <p>Concrete subclasses should define a constructor that takes an
     * <code>Object</code> as parameter. It will be invoked when an
     * application calls one of the {@linkplain TerminalFactory#getInstance
     * TerminalFactory.getInstance()} methods and receives the <code>params</code>
     * object specified by the application.
     */
    protected TerminalFactorySpi() {
        // empty
    }

    
Returns the CardTerminals created by this factory.
Returns:
the CardTerminals created by this factory./**
     * Returns the CardTerminals created by this factory.
     *
     * @return the CardTerminals created by this factory.
     */
    protected abstract CardTerminals engineTerminals();

}