/// <summary>
/// Automatics the detect mapping.
/// </summary>
/// <param name="xDoc">The x document.</param>
/// <returns></returns>
private XPathMappingList AutoDetectMapping(XDocument xDoc)
{
var xPathMappingList = new XPathMappingList();
if (xDoc == null)
{
return(xPathMappingList);
}
var nsMgr = this.CreateXmlNamespaceManager(xDoc);
var xpaths = XPathUtil.GetAllXPaths(xDoc, includeElementPaths: true, includeAttributePaths: true, nsMgr: nsMgr);
foreach (var xpath in xpaths)
{
var xPathMapping = new XPathMapping()
{
Column = this.BuildColumnNameFromXpath(xpath),
XPath = xpath
};
xPathMappingList.Add(xPathMapping);
}
return(xPathMappingList);
}
private DataTable FormatToDataTable(string xmlData, DataTable table = null)
{
if (table == null)
{
table = new DataTable();
}
if (string.IsNullOrEmpty(xmlData))
{
return(table);
}
var xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xmlData);
if (xmlDoc.DocumentElement != null)
{
table.TableName = xmlDoc.DocumentElement.Name;
}
var y = 0;
var rowXPath = this.FormatterOptions.GetValueOrDefault <string>("RowXPath", "/");
var removeNamespaces = this.FormatterOptions.GetValueOrDefault <bool>("RemoveNamespaces", false);
if (removeNamespaces)
{
xmlDoc = XmlHelper.RemoveXmlNamespaces(xmlDoc);
}
try
{
foreach (XmlNode rowNode in xmlDoc.SelectNodes(rowXPath))
{
var xPathMappings = this.XPathMappings;
if (xPathMappings == null || xPathMappings.Count == 0)
{
xPathMappings = this.AutoDetectMapping(rowNode);
}
var rowValues = this.ReadRowValues(rowNode, xPathMappings);
table.AddRow(rowValues, checkForMissingColumns: true);
y++;
}
}
catch (Exception ex)
{
throw new ArgumentException(string.Format("The XPath '{0}' was not found in:{1}{1}{2}", rowXPath, Environment.NewLine, xmlDoc.OuterXml), ex);
}
return(table);
}
private XPathMappingList AutoDetectMapping(DataTable table)
{
var xPathMappingList = new XPathMappingList();
foreach (DataColumn column in table.Columns)
{
var xPathMapping = new XPathMapping()
{
Column = column.ColumnName,
XPath = this.BuildXpathFromColumnName(column.ColumnName)
};
xPathMappingList.Add(xPathMapping);
}
return(xPathMappingList);
}
private void ExtractXPathMappingFromAttributes <TObj>(XPathMappingList xPathMappings) where TObj : class
{
var dataFieldsProps = typeof(TObj).GetProperties()
.Where(p => Attribute.IsDefined(p, typeof(DataFieldAttribute)))
.ToList();
foreach (var dataFieldProp in dataFieldsProps)
{
var attr = dataFieldProp.GetCustomAttribute <DataFieldAttribute>(false);
var xPathMapping = new XPathMapping()
{
XPath = attr.XPath,
Column = !string.IsNullOrEmpty(attr.Name)
? attr.Name
: dataFieldProp.Name
};
xPathMappings.Add(xPathMapping);
}
}
/// <summary>
/// Reads the row values.
/// </summary>
/// <param name="xmlRow">The XML row.</param>
/// <param name="xPathMappings">The x path mappings.</param>
/// <returns>
/// the rowdata as dictionary
/// </returns>
private Dictionary <string, object> ReadRowValues(XmlNode xmlRow, XPathMappingList xPathMappings)
{
var rowValues = new Dictionary <string, object>();
var xdoc = new XmlDocument();
xdoc.LoadXml(xmlRow.OuterXml);
// get the name of the root node e.g. <book>
var entityName = xdoc.FirstChild != null
? xdoc.FirstChild.Name
: "";
var nsMgr = this.CreateXmlNamespaceManager(xdoc);
foreach (var xPathMapping in xPathMappings)
{
var xPath = xPathMapping.XPath;
// "/book" -> "/book/title"
if (!string.IsNullOrEmpty(entityName) && !xPath.StartsWith("/" + entityName))
{
xPath = "/" + entityName + xPath;
}
// add all values from the path to the column
var nodes = xdoc.SelectNodes(xPath, nsMgr);
if (nodes != null)
{
foreach (XmlNode node in nodes)
{
rowValues.AddOrAppend(xPathMapping.Column, node != null
? node.GetInnerText("|")
: string.Empty, "#");
}
}
}
return(rowValues);
}
