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1   /*
2    * Copyright [2007] [University Corporation for Advanced Internet Development, Inc.]
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package org.opensaml.xml.security.credential;
18  
19  import java.util.ArrayList;
20  import java.util.List;
21  
22  import org.opensaml.xml.security.CriteriaSet;
23  import org.opensaml.xml.security.SecurityException;
24  
25  /**
26   * Simple implementation of {@link CredentialResolver} which just stores and returns a static set of credentials.
27   * 
28   * <p>
29   * Note: no filtering or other evaluation of the credentials is performed.  Any Criteria
30   * specified are ignored.  For a similar Collection-based CredentialResolver implementation which does support 
31   * evaluation and filtering based on supplied evaluable criteria, see {@link CollectionCredentialResolver}.
32   * </p>
33   */
34  public class StaticCredentialResolver extends AbstractCredentialResolver {
35      
36      /** List of credentials held by this resolver. */
37      private List<Credential> creds;
38      
39      /**
40       * Constructor.
41       *
42       * @param credentials collection of credentials to be held by this resolver
43       */
44      public StaticCredentialResolver(List<Credential> credentials) {
45          creds = new ArrayList<Credential>();
46          creds.addAll(credentials);
47      }
48      
49      /**
50       * Constructor.
51       *
52       * @param credential a single credential to be held by this resolver
53       */
54      public StaticCredentialResolver(Credential credential) {
55          creds = new ArrayList<Credential>();
56          creds.add(credential);
57      }
58  
59      /** {@inheritDoc} */
60      public Iterable<Credential> resolve(CriteriaSet criteria) throws SecurityException {
61          return creds;
62      }
63  
64  }