package railo.runtime.sql.exp;

public interface Expression {
	public void setIndex(int index);
	public int getIndex();
	public String getAlias();
	public void setAlias(String alias);
	public boolean hasAlias();
	public boolean hasIndex();
	
	public String toString(boolean noAlias);
	public void setDirectionBackward(boolean b);
	public boolean isDirectionBackward();
}