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## opencard.opt.util
Class PassThruCardServiceFactory

    java.lang.Object
      opencard.core.service.CardServiceFactory
          opencard.opt.service.OCF11CardServiceFactory
              opencard.opt.util.PassThruCardServiceFactory

    public final class PassThruCardServiceFactory

extends OCF11CardServiceFactory

A factory for creating low level card services for any smartcard. The only service this factory can create is `PassThruCardService`, which is available for all smartcards. This class serves as an example for implementing a simple card service factories, and provides a "quick start" for people who want to become familiar with smartcards and the OpenCard Framework.
To use the service instantiated by this factory, add `opencard.opt.util.PassThruCardServiceFactory` to the attribute `OpenCard.services` in your `opencard.properties` file, preferrably as the last entry.

Version:
  $Id: PassThruCardServiceFactory.java,v 1.1.1.1 1999/10/05 15:08:48 damke Exp $
Author:
  Thomas Schaeck (schaeck@de.ibm.com), Roland Weber (rolweber@de.ibm.com)
See Also:
  `PassThruCardService`

Constructor Summary
`PassThruCardServiceFactory()` Instantiates a new factory for low level card services.

Method Summary
`java.util.Enumeration` | `cardServiceClasses(CardID cardID)` Returns an enumeration of known card service classes.
`boolean` | `knows(CardID cardID)` Tests whether this factory supports a given smartcard.

Methods inherited from class opencard.opt.service.OCF11CardServiceFactory
`getCardType, getClasses`

Methods inherited from class opencard.core.service.CardServiceFactory
`getCardServiceInstance, getClassFor, newCardServiceInstance`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### PassThruCardServiceFactory

    public PassThruCardServiceFactory()

  Instantiates a new factory for low level card services.

Method Detail

### knows

    public final boolean knows(CardID cardID)

  Tests whether this factory supports a given smartcard. The smartcard is identified by it's ATR (Answer To Reset), which is encapsulated in a `CardID` object. Since all smartcards can receive APDUs and send responses to them, this factory supports all cards. If a smartcard is supported, the card services this factory is able to instantiate can be obtained using `cardServiceClasses`.

  Specified by:
    `knows` in class `OCF11CardServiceFactory`
  Parameters:
    `cardID` - the ATR of the smartcard to test for
  Returns:
    `true`, since this factory supports all smartcards
  See Also:
    `cardServiceClasses(opencard.core.terminal.CardID)`

### cardServiceClasses

    public final java.util.Enumeration cardServiceClasses(CardID cardID)

  Returns an enumeration of known card service classes. Known classes are those that can be instantiated by this factory for the given smartcard. To check whether a factory is able to instantiate any service at all for that smartcard, `knows` can be invoked. Since this factory supports all smartcards, and can only instantiate one service, this method returns a constant value.

  Specified by:
    `cardServiceClasses` in class `OCF11CardServiceFactory`
  Parameters:
    `cardID` - the ATR of the smartcard to test for
  Returns:
    an enumeration holding `PassThruCardService.class` as it's only element
  See Also:
    `knows(opencard.core.terminal.CardID)`

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