public synchronized XmlNamespaceDictionary set()

in google-http-client-xml/src/main/java/com/google/api/client/xml/XmlNamespaceDictionary.java [136:161]

• 26 lines of code
• 7 McCabe index (conditional complexity)

  public synchronized XmlNamespaceDictionary set(String alias, String uri) {
    String previousUri = null;
    String previousAlias = null;
    if (uri == null) {
      if (alias != null) {
        previousUri = namespaceAliasToUriMap.remove(alias);
      }
    } else if (alias == null) {
      previousAlias = namespaceUriToAliasMap.remove(uri);
    } else {
      previousUri = namespaceAliasToUriMap.put(
          Preconditions.checkNotNull(alias), Preconditions.checkNotNull(uri));
      if (!uri.equals(previousUri)) {
        previousAlias = namespaceUriToAliasMap.put(uri, alias);
      } else {
        previousUri = null;
      }
    }
    if (previousUri != null) {
      namespaceUriToAliasMap.remove(previousUri);
    }
    if (previousAlias != null) {
      namespaceAliasToUriMap.remove(previousAlias);
    }
    return this;
  }