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25 
26 package javax.net.ssl;
27 
28 import java.util.*;
29 
30 import java.security.KeyStore.*;
31 
32 /**
33  * A parameters object for X509KeyManagers that encapsulates a List
34  * of KeyStore.Builders.
35  *
36  * @see java.security.KeyStore.Builder
37  * @see X509KeyManager
38  *
39  * @author  Andreas Sterbenz
40  * @since   1.5
41  */
42 public class KeyStoreBuilderParameters implements ManagerFactoryParameters {
43 
44     private final List<Builder> parameters;
45 
46     /**
47      * Construct new KeyStoreBuilderParameters from the specified
48      * {@linkplain java.security.KeyStore.Builder}.
49      *
50      * @param builder the Builder object
51      * @exception NullPointerException if builder is null
52      */
KeyStoreBuilderParameters(Builder builder)53     public KeyStoreBuilderParameters(Builder builder) {
54         parameters = Collections.singletonList(Objects.requireNonNull(builder));
55     }
56 
57     /**
58      * Construct new KeyStoreBuilderParameters from a List
59      * of {@linkplain java.security.KeyStore.Builder}s. Note that the list
60      * is cloned to protect against subsequent modification.
61      *
62      * @param parameters the List of Builder objects
63      * @exception NullPointerException if parameters is null
64      * @exception IllegalArgumentException if parameters is an empty list
65      */
KeyStoreBuilderParameters(List<Builder> parameters)66     public KeyStoreBuilderParameters(List<Builder> parameters) {
67         if (parameters.isEmpty()) {
68             throw new IllegalArgumentException();
69         }
70 
71         this.parameters = Collections.unmodifiableList(
72             new ArrayList<Builder>(parameters));
73     }
74 
75     /**
76      * Return the unmodifiable List of the
77      * {@linkplain java.security.KeyStore.Builder}s
78      * encapsulated by this object.
79      *
80      * @return the unmodifiable List of the
81      * {@linkplain java.security.KeyStore.Builder}s
82      * encapsulated by this object.
83      */
getParameters()84     public List<Builder> getParameters() {
85         return parameters;
86     }
87 
88 }
89