public void Sort()
{
logger.Info("Entered");
try
{
if (SortingFields.Count == 0)
{
logger.Warn("No sorting field is found to sort data, please set a sorting field first");
throw new InvalidOperationException("No sorting field is found to sort data, please set a sorting field first");
}
SortingField rootSF = SortingFields[0];//xpath is null form grid
var endElement = workflowFile.RootNode.Descendants(rootSF.GetLeafName()).First();
var parentElement = endElement.Parent;
var grandParentElement = parentElement.Parent;
if (grandParentElement == null)
{
TwoLevelSort(rootSF);
}
else
{
MultiLevelSort(rootSF, grandParentElement, parentElement);
}
}
catch (Exception ex)
{
logger.Error(ex, "XML Sorting Error, DataFile {0}", workflowFile.FilePath);
throw ex;
}
logger.Info("Leaving");
}
public StringComparer(SortingField sf)
{
if (sf.ComparisonMode == ComparisonMode.IgnoreCase)
{
options = StringComparison.OrdinalIgnoreCase;
}
else if (sf.ComparisonMode == ComparisonMode.CaseSensitive)
{
options = StringComparison.Ordinal;
}
else
{
throw new ArgumentOutOfRangeException("SortingField.ComparisonMode", $"SortingField {sf.XPath} has invalid ComparisonMode {sf.ComparisonMode} for Stringcomparer");
}
}
/// <summary>
/// It is used to sort root/child/grand_child or a more deeper hieararchy
/// </summary>
/// <param name="rootSF"></param>
/// <param name="grandParentElement"></param>
/// <param name="parentElement"></param>
private void MultiLevelSort(SortingField rootSF, XElement grandParentElement, XElement parentElement)
{
logger.Info("Sorting using xpath {0}", rootSF.XPath);
if (workflowFile.RootNode == grandParentElement)
{
logger.Info("RootNode is GrandParent element case, RootSF XPath {0}", rootSF.XPath);
// IEnumerable<XElement> grandParentNodes = null;
IEnumerable <XElement> parentNodes = grandParentElement.Descendants(parentElement.Name);
IOrderedEnumerable <XElement> orderNodeTree = Process(parentNodes, rootSF);
for (int i = 1; i < SortingFields.Count; i++)
{
var sf = SortingFields[i];
//logger.Info("Sorting using SF {0}", sf.XPath);
orderNodeTree = Process(orderNodeTree, sf);
}
grandParentElement.ReplaceAll(orderNodeTree);
}
else
{
logger.Info("RootNode <> GrandParent element case, RootSF XPath {0}", rootSF.XPath);
var grandParentNodes = workflowFile.RootNode.Descendants(grandParentElement.Name);
foreach (var gparent in grandParentNodes)
{
IOrderedEnumerable <XElement> orderNodeTree = null;
orderNodeTree = Process(gparent.Descendants(parentElement.Name), rootSF);
for (int i = 1; i < SortingFields.Count; i++)
{
var sf = SortingFields[i];
// logger.Info("Sorting using SF {0}", sf.XPath);
orderNodeTree = Process(orderNodeTree, sf);
}
gparent.ReplaceAll(orderNodeTree);
}
}
logger.Info("Multi-level sorting completed");
}
/// <summary>
/// It is used to sort root/child only case
/// </summary>
/// <param name="rootSF"></param>
private void TwoLevelSort(SortingField rootSF)
{
logger.Info("Sorting using xpath {0}", rootSF.XPath);
IOrderedEnumerable <XElement> orderNodeTree = null;
orderNodeTree = rootSF.Process(workflowFile.RootNode);
var lastElement = ApplyOrder(workflowFile.RootNode, orderNodeTree);
for (int i = 1; i < SortingFields.Count; i++)
{
var sf = SortingFields[i];
//logger.Info("Sorting using SF {0}", sf.XPath);
orderNodeTree = sf.Process(workflowFile.RootNode);
lastElement = ApplyOrderAfter(lastElement, orderNodeTree);
}
logger.Info("2-level sorting operation completed");
}
/// <summary>
/// Called by multi level child nodes for second level ordering
/// </summary>
/// <param name="orderNodeTree"></param>
/// <param name="sf"></param>
/// <returns></returns>
public IOrderedEnumerable <XElement> Process(IOrderedEnumerable <XElement> orderNodeTree, SortingField sf)
{
string elementName = sf.GetLeafName();
if (sf.SortingType == SortingType.Ascending)
{
orderNodeTree = orderNodeTree.ThenBy(m => m.Element(elementName).Value, sf.GetComparer());
}
else
{
orderNodeTree = orderNodeTree.ThenByDescending(m => m.Element(elementName).Value, sf.GetComparer());
}
return(orderNodeTree);
}