content: /*
   * Copyright 1999-2017 Alibaba Group Holding Ltd.
   *
   * Licensed 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 com.alibaba.druid.sql.dialect.mysql.ast.expr;
  
  import com.alibaba.druid.sql.SQLUtils;
  import com.alibaba.druid.sql.ast.SQLName;
  import com.alibaba.druid.sql.ast.SQLObject;
  import com.alibaba.druid.sql.ast.statement.SQLColumnDefinition;
  import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlASTVisitor;
  import com.alibaba.druid.util.FnvHash;
  
  import java.util.Collections;
  import java.util.List;
  
  public class MySqlUserName extends MySqlExprImpl implements SQLName, Cloneable {
      private String userName;
      private String host;
      private String identifiedBy;
  
      private long userNameHashCod64;
      private long hashCode64;
  
      public String getUserName() {
          return userName;
      }
  
      public void setUserName(String userName) {
          this.userName = userName;
  
          this.hashCode64 = 0;
          this.userNameHashCod64 = 0;
      }
  
      public String getNormalizeUserName() {
          return SQLUtils.normalize(userName);
      }
  
      public String getHost() {
          return host;
      }
  
      public void setHost(String host) {
          this.host = host;
  
          this.hashCode64 = 0;
          this.userNameHashCod64 = 0;
      }
  
      @Override
      public void accept0(MySqlASTVisitor visitor) {
          visitor.visit(this);
          visitor.endVisit(this);
      }
  
      public String getSimpleName() {
          StringBuilder buf = new StringBuilder();
  
          if (userName.length() == 0 || userName.charAt(0) != '\'') {
              buf.append('\'');
              buf.append(userName);
              buf.append('\'');
          } else {
              buf.append(userName);
          }
  
          buf.append('@');
  
          if (host.length() == 0 || host.charAt(0) != '\'') {
              buf.append('\'');
              buf.append(host);
              buf.append('\'');
          } else {
              buf.append(host);
          }
  
          if (identifiedBy != null) {
              buf.append(" identifiedBy by ");
              buf.append(identifiedBy);
          }
  
          return buf.toString();
      }
  
      public String getIdentifiedBy() {
          return identifiedBy;
      }
  
      public void setIdentifiedBy(String identifiedBy) {
          this.identifiedBy = identifiedBy;
      }
  
      public String toString() {
          return getSimpleName();
      }
  
      public MySqlUserName clone() {
          MySqlUserName x = new MySqlUserName();
  
          x.userName = userName;
          x.host = host;
          x.identifiedBy = identifiedBy;
          x.hashCode64 = hashCode64;
          x.userNameHashCod64 = userNameHashCod64;
  
          return x;
      }
  
      @Override
      public List<SQLObject> getChildren() {
          return Collections.emptyList();
      }
  
      public long nameHashCode64() {
          if (userNameHashCod64 == 0
                  && userName != null) {
              userNameHashCod64 = FnvHash.hashCode64(userName);
          }
          return userNameHashCod64;
      }
  
      @Override
      public long hashCode64() {
          if (hashCode64 == 0) {
              if (host != null) {
                  long hash = FnvHash.hashCode64(host);
                  hash ^= '@';
                  hash *= 0x100000001b3L;
                  hash = FnvHash.hashCode64(hash, userName);
  
                  hashCode64 = hash;
              } else {
                  hashCode64 = nameHashCode64();
              }
          }
  
          return hashCode64;
      }
  
      @Override
      public SQLColumnDefinition getResolvedColumn() {
          return null;
      }
  }
  