/**
* Find the variable in the expression.
* @param expr the expression to look in
* @return the index of the variable or -1 if there is not exactly one
* variable.
*/
private int findVariable(ExprNodeDesc expr)
{
int result = -1;
List <ExprNodeDesc> children = expr.getChildren();
for (int i = 0; i < children.Count; ++i)
{
ExprNodeDesc child = children[i];
if (child is ExprNodeColumnDesc)
{
// if we already found a variable, this isn't a sarg
if (result != -1)
{
return(-1);
}
else
{
result = i;
}
}
}
return(result);
}
/**
* Find the variable in the expression.
* @param expr the expression to look in
* @return the index of the variable or -1 if there is not exactly one
* variable.
*/
private int findVariable(ExprNodeDesc expr)
{
int result = -1;
List<ExprNodeDesc> children = expr.getChildren();
for (int i = 0; i < children.Count; ++i)
{
ExprNodeDesc child = children[i];
if (child is ExprNodeColumnDesc)
{
// if we already found a variable, this isn't a sarg
if (result != -1)
{
return -1;
}
else
{
result = i;
}
}
}
return result;
}
