View Javadoc

1   /*
2    * Copyright [2006] [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.saml2.metadata.impl;
18  
19  import org.opensaml.common.impl.AbstractSAMLObjectMarshaller;
20  import org.opensaml.saml2.metadata.KeyDescriptor;
21  import org.opensaml.xml.XMLObject;
22  import org.opensaml.xml.io.MarshallingException;
23  import org.opensaml.xml.security.credential.UsageType;
24  import org.w3c.dom.Element;
25  
26  /**
27   * A thread-safe marshaller for {@link org.opensaml.saml2.metadata.KeyDescriptor}s.
28   */
29  public class KeyDescriptorMarshaller extends AbstractSAMLObjectMarshaller {
30  
31      /** {@inheritDoc} */
32      protected void marshallAttributes(XMLObject xmlObject, Element domElement) throws MarshallingException {
33          KeyDescriptor keyDescriptor = (KeyDescriptor) xmlObject;
34  
35          if (keyDescriptor.getUse() != null) {
36              UsageType use = keyDescriptor.getUse();
37              // UsageType enum contains more values than are allowed by SAML 2 schema
38              if (use.equals(UsageType.SIGNING) || use.equals(UsageType.ENCRYPTION)) {
39                  domElement.setAttribute(KeyDescriptor.USE_ATTRIB_NAME, use.toString().toLowerCase());
40              } else if (use.equals(UsageType.UNSPECIFIED)) {
41                  // emit nothing for unspecified - this is semantically equivalent to non-existent attribute
42              } else {
43                  // Just in case values are unknowingly added to UsageType in the future...
44                  throw new MarshallingException("KeyDescriptor had illegal value for use attribute: " + use.toString());
45              }
46          }
47      }
48  }