package org.webslinger.rules;

 import java.io.IOException;

 import javax.servlet.ServletRequest;

 import org.webslinger.Webslinger;

 public abstract class AbstractListValue<T> extends AbstractValue {

     public AbstractListValue(int id) {

         super(id);

     }

     public AbstractListValue(Rules p, int id) {

         super(p, id);

     }

     public abstract T[] getValue(ServletRequest request, Webslinger top) throws IOException;

     public Object getFirstValue(ServletRequest request, Webslinger top) throws IOException {

         Object[] values = getValue(request, top);

         if (values == null) return null;

         return values[0];

     }

 }