content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.hive.service.auth;
  
  import java.util.HashMap;
  import java.util.Map;
  
  /**
   * Possible values of SASL quality-of-protection value.
   */
  public enum SaslQOP {
    // Authentication only.
    AUTH("auth"),
    // Authentication and integrity checking by using signatures.
    AUTH_INT("auth-int"),
    // Authentication, integrity and confidentiality checking by using signatures and encryption.
    AUTH_CONF("auth-conf");
  
    public final String saslQop;
  
    private static final Map<String, SaslQOP> STR_TO_ENUM = new HashMap<String, SaslQOP>();
  
    static {
      for (SaslQOP saslQop : values()) {
        STR_TO_ENUM.put(saslQop.toString(), saslQop);
      }
    }
  
    SaslQOP(String saslQop) {
      this.saslQop = saslQop;
    }
  
    public String toString() {
      return saslQop;
    }
  
    public static SaslQOP fromString(String str) {
      if (str != null) {
        str = str.toLowerCase();
      }
      SaslQOP saslQOP = STR_TO_ENUM.get(str);
      if (saslQOP == null) {
        throw new IllegalArgumentException(
          "Unknown auth type: " + str + " Allowed values are: " + STR_TO_ENUM.keySet());
      }
      return saslQOP;
    }
  }
  