CertStoreSpi (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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Java™ Platform
Standard Ed. 6

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java.security.cert
Class CertStoreSpi

java.lang.Object
  java.security.cert.CertStoreSpi

public abstract class CertStoreSpi
extends Object
extends Object

The Service Provider Interface (SPI) for the CertStore class. All CertStore implementations must include a class (the SPI class) that extends this class (CertStoreSpi), provides a constructor with a single argument of type CertStoreParameters, and implements all of its methods. In general, instances of this class should only be accessed through the CertStore class. For details, see the Java Cryptography Architecture.

Concurrent Access

The public methods of all CertStoreSpi objects must be thread-safe. That is, multiple threads may concurrently invoke these methods on a single CertStoreSpi object (or more than one) with no ill effects. This allows a CertPathBuilder to search for a CRL while simultaneously searching for further certificates, for instance.

Simple CertStoreSpi implementations will probably ensure thread safety by adding a synchronized keyword to their engineGetCertificates and engineGetCRLs methods. More sophisticated ones may allow truly concurrent access.

Since:: 1.4

Constructor Summary

CertStoreSpi(CertStoreParameters params)
          The sole constructor.

Method Summary

abstract Collection<? extends Certificate> engineGetCertificates(CertSelector selector)
          Returns a Collection of Certificates that match the specified selector.

abstract Collection<? extends CRL> engineGetCRLs(CRLSelector selector)
          Returns a Collection of CRLs that match the specified selector.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Summary
`CertStoreSpi(CertStoreParameters params)` The sole constructor.

Method Summary
`abstract Collection<? extends Certificate>`	`engineGetCertificates(CertSelector selector)` Returns a `Collection` of `Certificate`s that match the specified selector.
`abstract Collection<? extends CRL>`	`engineGetCRLs(CRLSelector selector)` Returns a `Collection` of `CRL`s that match the specified selector.

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

Constructor Detail

CertStoreSpi

public CertStoreSpi(CertStoreParameters params)
             throws InvalidAlgorithmParameterException

The sole constructor.

Parameters:: params - the initialization parameters (may be null)
Throws:: InvalidAlgorithmParameterException - if the initialization parameters are inappropriate for this CertStoreSpi

Method Detail

engineGetCertificates

public abstract Collection<? extends Certificate> engineGetCertificates(CertSelector selector)
                                                                 throws CertStoreException

Returns a Collection of Certificates that match the specified selector. If no Certificates match the selector, an empty Collection will be returned.

For some CertStore types, the resulting Collection may not contain all of the Certificates that match the selector. For instance, an LDAP CertStore may not search all entries in the directory. Instead, it may just search entries that are likely to contain the Certificates it is looking for.

Some CertStore implementations (especially LDAP CertStores) may throw a CertStoreException unless a non-null CertSelector is provided that includes specific criteria that can be used to find the certificates. Issuer and/or subject names are especially useful criteria.

Parameters:: selector - A CertSelector used to select which Certificates should be returned. Specify null to return all Certificates (if supported).
Returns:: A Collection of Certificates that match the specified selector (never null)
Throws:: CertStoreException - if an exception occurs

engineGetCRLs

public abstract Collection<? extends CRL> engineGetCRLs(CRLSelector selector)
                                                 throws CertStoreException

Returns a Collection of CRLs that match the specified selector. If no CRLs match the selector, an empty Collection will be returned.

For some CertStore types, the resulting Collection may not contain all of the CRLs that match the selector. For instance, an LDAP CertStore may not search all entries in the directory. Instead, it may just search entries that are likely to contain the CRLs it is looking for.

Some CertStore implementations (especially LDAP CertStores) may throw a CertStoreException unless a non-null CRLSelector is provided that includes specific criteria that can be used to find the CRLs. Issuer names and/or the certificate to be checked are especially useful.

Parameters:: selector - A CRLSelector used to select which CRLs should be returned. Specify null to return all CRLs (if supported).
Returns:: A Collection of CRLs that match the specified selector (never null)
Throws:: CertStoreException - if an exception occurs