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17 package org.opensaml.xml.security.credential.criteria;
18
19 import org.opensaml.xml.security.credential.Credential;
20 import org.opensaml.xml.security.criteria.KeyNameCriteria;
21 import org.opensaml.xml.util.DatatypeHelper;
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
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28 public class EvaluableKeyNameCredentialCriteria implements EvaluableCredentialCriteria {
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31 private final Logger log = LoggerFactory.getLogger(EvaluableKeyNameCredentialCriteria.class);
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34 private String keyName;
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41 public EvaluableKeyNameCredentialCriteria(KeyNameCriteria criteria) {
42 if (criteria == null) {
43 throw new NullPointerException("Criteria instance may not be null");
44 }
45 keyName = criteria.getKeyName();
46 }
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53 public EvaluableKeyNameCredentialCriteria(String newKeyName) {
54 if (DatatypeHelper.isEmpty(newKeyName)) {
55 throw new IllegalArgumentException("Key name may not be null");
56 }
57 keyName = newKeyName;
58 }
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60
61 public Boolean evaluate(Credential target) {
62 if (target == null) {
63 log.error("Credential target was null");
64 return null;
65 }
66 if (target.getKeyNames().isEmpty()) {
67 log.info("Could not evaluate criteria, credential contained no key names");
68 return null;
69 }
70 Boolean result = target.getKeyNames().contains(keyName);
71 return result;
72 }
73
74 }