/// <summary>
/// The method Evaluates for loop.
/// <param name="loopNode">XML node of Foreach</param>
/// <param name="DCO">Current iteration DCO of the parent for-each loop</param>
/// </summary>
public void EvaluateLoop(XmlNode loopNode, TDCOLib.IDCO DCO)
{
Stopwatch sw = Stopwatch.StartNew();
DataElement dataElement = new DataElement();
Conditions conditionEvaluator = new Conditions();
Tables table = new Tables();
try
{
int forEachlevel = getIntValueForEachObjectType(loopNode.Attributes["select"].Value);
nestingLevel = setAndValidateNestingLevel(loopNode);
validateForLoop(forEachlevel, DCO);
for (int i = 0; i < DCO.NumOfChildren(); i++)
{
//setting the currentIterationDCO , so that it can be used in DCODataRetreiver to get the data.
Globals.Instance.SetData(Constants.forLoopString.CURRENTITERATIONDCO, DCO.GetChild(i));
foreach (XmlNode node in loopNode.ChildNodes)
{
switch (node.Name)
{
case Constants.NodeTypeString.SE_IF:
conditionEvaluator.EvaluateCondition(node);
break;
case Constants.NodeTypeString.SE_FOREACH:
Loops loopEvaluator = new Loops();
loopEvaluator.EvaluateLoop(node, DCO.GetChild(i));
break;
case Constants.NodeTypeString.SE_ROWS:
if (node.Attributes == null || node.Attributes.Count > 0 ||
string.IsNullOrEmpty(node.Attributes["tablename"].Value))
{
new SmartExportException("Its mandatory to specify the table name when the for-each-rows tag " +
"is used within se:for-each tag for tables.");
}
if (node.Attributes["tablename"].Value == DCO.GetChild(i).ID)
{
table.FetchTable(node);
}
break;
case Constants.NodeTypeString.SE_DATA:
dataElement.EvaluateData(node);
break;
default:
if (node.NodeType == XmlNodeType.Element)
{
ExportCore.WriteLog("Node type [" + ((XmlElement)node).Name + "] not supported. Will be ignored");
}
break;
}
}
//setting it to empty after every iteration.
Globals.Instance.SetData(Constants.forLoopString.CURRENTITERATIONDCO, Constants.EMPTYSTRING);
}
}
catch (System.Exception exp)
{
string message = exp.Message;
//if the problem was already caught at the child node level the line number
// information would be already present in the exception message
if (!message.Contains("Problem found at line number"))
{
TemplateParser templateParser = (TemplateParser)Globals.Instance.GetData(Constants.GE_TEMPLATE_PARSER);
message = "Problem found at line number : " + templateParser.GetLineNumberForNode(loopNode) + "\n" + exp.Message;
}
//setting it to empty after every iteration.
Globals.Instance.SetData(Constants.forLoopString.CURRENTITERATIONDCO, Constants.EMPTYSTRING);
throw new SmartExportException(message);
}
ExportCore.WriteDebugLog(" EvaluateLoop " + loopNode + " completed in " + sw.ElapsedMilliseconds + " ms.");
sw.Stop();
}
