Beispiel #1
0
        ///       <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();
        }