/// <summary> This method returns the next node in the nodeset
/// it returns -1 if there is no more node
/// Afer finishing evaluating, don't forget to <em> reset the xpath </em>
/// </summary>
/// <returns> int corresponding to the VTD index
/// </returns>
public int evalXPath()
{
if (xpe != null)
{
if (ft == true)
{
if (vn != null)
{
stackSize = vn.contextStack2.size;
}
ft = false;
xpe.adjust(vn.getTokenCount());
}
return(xpe.evalNodeSet(vn));
}
throw new PilotException(" Null XPath expression ");
}
public override int evalNodeSet(VTDNav vn)
{
// TODO Auto-generated method stub
int i = -1;
if (cached)
{
if (count < ens.size_Renamed_Field)
{
i = ens.intAt(count);
vn.recoverNode(i);
count++;
return(i);
}
else
{
return(-1);
}
}
else
{
cached = true;
if (ens == null)
{
ens = new FastIntBuffer(8);//page size 64
}
//record node set
while ((i = e.evalNodeSet(vn)) != -1)
{
ens.append(i);
}
e.reset(vn);
if (ens.size_Renamed_Field > 0)
{
i = ens.intAt(count);//count should be zero
vn.recoverNode(i);
count++;
return(i);
}
else
{
return(-1);
}
}
}
/*
* (non-Javadoc)
*
* @see com.ximpleware.xpath.Expr#evalNodeSet(com.ximpleware.VTDNav)
*/
public override int evalNodeSet(VTDNav vn)
{
int a;
if (this.next == null)
{
return(e.evalNodeSet(vn));
}
else
{
while (true)
{
switch (state)
{
case 0:
if (ih == null)
{
ih = new intHash();
}
if (current != null)
{
vn.push2();
while ((a = current.e.evalNodeSet(vn)) != -1)
{
if (isUnique(a))
{
state = 1;
return(a);
}
}
state = 2;
vn.pop2();
break;
}
else
{
state = 3;
}
break;
case 1:
while ((a = current.e.evalNodeSet(vn)) != -1)
{
if (isUnique(a))
{
state = 1;
return(a);
}
}
state = 2;
vn.pop2();
break;
case 2:
current = current.next;
if (current != null)
{
vn.push2();
while ((a = current.e.evalNodeSet(vn)) != -1)
{
if (isUnique(a))
{
state = 1;
return(a);
}
}
vn.pop2();
break;
}
else
{
state = 3;
}
break;
case 3:
return(-1);
default:
throw new XPathEvalException("Invalid state evaluating PathExpr");
}
}
}
/*
* default: throw new XPathEvalException( "Invalid state evaluating
* PathExpr");
*/
}
