package examples;

import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import java.util.Hashtable;
import java.io.Writer;
import java.io.IOException;
import oracle.jsp.jml.JmlNumber;

public class ExampleLoopTag 
    extends BodyTagSupport
{
    
    String index;
    int count;
    int i;
    JmlNumber ib;

    public ExampleLoopTag() {
      resetAttr();
    }

    public void release() {
      resetAttr();
    }

    private void resetAttr() {
      index=null;
      count=0;
      i=0;
      ib=null;
    }


    public void setIndex(String index)
    {
      this.index=index;
    }
    public void setCount(String count)
    {
      this.count=Integer.parseInt(count);
    }

    public int doStartTag() throws JspException {
	return EVAL_BODY_TAG;
    }

    public void doInitBody() throws JspException {
        ib=new JmlNumber();
        pageContext.setAttribute(index, ib);
        i++;
        ib.setValue(i);
    }
    
    public int doAfterBody() throws JspException {
        try {
            if (i >= count) {
                bodyContent.writeOut(bodyContent.getEnclosingWriter());
                return SKIP_BODY;
            } else
                pageContext.setAttribute(index, ib);
            i++;
            ib.setValue(i);
            return EVAL_BODY_TAG;
        } catch (IOException ex) {
            throw new JspTagException(ex.toString());
        }
    }

}