code: public void setStored(String stored) {
  
          boolean isStored = false;
          boolean isCompressed = false;
          if (stored != null) {
              stored = stored.trim().toLowerCase();
              if (STR_COMPRESS.equals(stored)) {
                  isCompressed = true;
                  isStored = true;
              } else if (STR_YES.equals(stored)) {
                  // "yes", value will be stored but not compressed
                  isStored = true;
              } else {
                  // only "true" or "false" remain
                  isStored = Boolean.valueOf(stored).booleanValue();
              }
          }
          setStored(isStored);
          setCompressed(isCompressed);
      }
docs: Controls if the content of this field is stored in the Lucene index from a String parameter.<p>
  
  @param stored if <code>"true"</code>, then the field content is stored
  
  @see #setStored(boolean)