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25 
26 package sun.security.provider.certpath;
27 
28 import java.util.Date;
29 import java.util.Set;
30 
31 import java.security.cert.TrustAnchor;
32 import java.security.cert.X509CertSelector;
33 import java.security.cert.X509CRLSelector;
34 
35 import sun.security.x509.GeneralNameInterface;
36 
37 /**
38  * Helper class that allows access to JDK specific known-public methods in the
39  * java.security.cert package. It relies on a subclass in the
40  * java.security.cert packages that is initialized before any of these methods
41  * are called (achieved via static initializers).
42  *
43  * The methods are made available in this fashion for performance reasons.
44  *
45  * @author Andreas Sterbenz
46  */
47 public abstract class CertPathHelper {
48 
49     /**
50      * Object used to tunnel the calls. Initialized by CertPathHelperImpl.
51      */
52     protected static CertPathHelper instance;
53 
CertPathHelper()54     protected CertPathHelper() {
55         // empty
56     }
57 
implSetPathToNames(X509CertSelector sel, Set<GeneralNameInterface> names)58     protected abstract void implSetPathToNames(X509CertSelector sel,
59             Set<GeneralNameInterface> names);
60 
implSetDateAndTime(X509CRLSelector sel, Date date, long skew)61     protected abstract void implSetDateAndTime(X509CRLSelector sel, Date date, long skew);
62 
implIsJdkCA(TrustAnchor anchor)63     protected abstract boolean implIsJdkCA(TrustAnchor anchor);
64 
setPathToNames(X509CertSelector sel, Set<GeneralNameInterface> names)65     static void setPathToNames(X509CertSelector sel,
66             Set<GeneralNameInterface> names) {
67         instance.implSetPathToNames(sel, names);
68     }
69 
setDateAndTime(X509CRLSelector sel, Date date, long skew)70     public static void setDateAndTime(X509CRLSelector sel, Date date, long skew) {
71         instance.implSetDateAndTime(sel, date, skew);
72     }
73 
isJdkCA(TrustAnchor anchor)74     public static boolean isJdkCA(TrustAnchor anchor) {
75         return (anchor == null) ? false : instance.implIsJdkCA(anchor);
76     }
77 }
78