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17 package edu.internet2.middleware.shibboleth.common.attribute.encoding.provider;
18
19 import java.util.List;
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21 import org.opensaml.Configuration;
22 import org.opensaml.saml2.core.Attribute;
23 import org.opensaml.saml2.core.AttributeValue;
24 import org.opensaml.xml.XMLObject;
25 import org.opensaml.xml.XMLObjectBuilder;
26 import org.opensaml.xml.schema.XSString;
27 import org.opensaml.xml.schema.impl.XSStringBuilder;
28 import org.opensaml.xml.util.DatatypeHelper;
29 import org.slf4j.Logger;
30 import org.slf4j.LoggerFactory;
31
32 import edu.internet2.middleware.shibboleth.common.attribute.BaseAttribute;
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37 public class SAML2StringAttributeEncoder extends AbstractSAML2AttributeEncoder {
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40 private final Logger log = LoggerFactory.getLogger(SAML2StringAttributeEncoder.class);
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43 private final XMLObjectBuilder<XSString> stringBuilder;
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45
46 public SAML2StringAttributeEncoder() {
47 super();
48 stringBuilder = (XSStringBuilder) Configuration.getBuilderFactory().getBuilder(XSString.TYPE_NAME);
49 }
50
51
52 public Attribute encode(BaseAttribute attribute) {
53 Attribute samlAttribute = attributeBuilder.buildObject();
54 populateAttribute(samlAttribute);
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56 String attributeValue;
57 XSString samlAttributeValue;
58 for (Object o : attribute.getValues()) {
59 if (o == null) {
60 continue;
61 }
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63 attributeValue = o.toString();
64 if (!(DatatypeHelper.isEmpty(attributeValue))) {
65 samlAttributeValue = stringBuilder.buildObject(AttributeValue.DEFAULT_ELEMENT_NAME, XSString.TYPE_NAME);
66 samlAttributeValue.setValue(attributeValue);
67 samlAttribute.getAttributeValues().add(samlAttributeValue);
68 }
69 }
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71 List<XMLObject> attributeValues = samlAttribute.getAttributeValues();
72 if (attributeValues == null || attributeValues.isEmpty()) {
73 log.debug("Unable to encode {} attribute. It does not contain any values", attribute.getId());
74 return null;
75 }
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77 return samlAttribute;
78 }
79
80 }