package cn.home1.oss.lib.security.api;
   
   import org.springframework.security.core.GrantedAuthority;
   
   import java.util.Comparator;
   
   /**
    * Created by haolun on 17/1/4.
    */
  public abstract class AbstractGrantedAuthority implements GrantedAuthority, Comparable<GrantedAuthority> {
  
    public static final Comparator<GrantedAuthority> COMPARATOR = (lhs, rhs) -> {
      final int result;
      if (lhs != null && rhs != null) {
        result = lhs.getAuthority().compareTo(rhs.getAuthority());
      } else if (lhs != null) { // rhs == null
        result = 1;
      } else { // lhs == null && rhs != null
        result = -1;
      }
      return result;
    };
  
    @Override
    public int compareTo(final GrantedAuthority rhs) {
      return AbstractGrantedAuthority.COMPARATOR.compare(this, rhs);
    }
  
    @Override
    public boolean equals(final Object obj) {
      final boolean result;
      if (obj != null) {
        if (this.getClass() == obj.getClass() || GrantedAuthority.class.isAssignableFrom(obj.getClass())) {
          final GrantedAuthority rhs = (GrantedAuthority) obj;
          result = this.getAuthority().equals(rhs.getAuthority());
        } else {
          result = false;
        }
      } else {
        result = false;
      }
      return result;
    }
  
    @Override
    public int hashCode() {
      return this.getAuthority().hashCode();
    }
  
    @Override
    public String toString() {
      return this.getAuthority();
    }
  }