001 package railo.runtime.sql.exp; 002 003 public interface Expression { 004 public void setIndex(int index); 005 public int getIndex(); 006 public String getAlias(); 007 public void setAlias(String alias); 008 public boolean hasAlias(); 009 public boolean hasIndex(); 010 011 public String toString(boolean noAlias); 012 public void setDirectionBackward(boolean b); 013 public boolean isDirectionBackward(); 014 }