public static FieldMaps CreateFromFile(string fileName)
{
UtilityMethods.ValidateXmlFile(fileName, "WorkItemFieldMap.xsd");
FieldMaps allFieldsMaps = null;
try
{
XmlSerializer serializer = new XmlSerializer(typeof(FieldMaps));
using (FileStream stream = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
allFieldsMaps = (FieldMaps)serializer.Deserialize(stream);
}
}
catch (IOException ioEx)
{
throw new ConverterException(ioEx.Message);
}
// validate the field map that is does not contain any 1-many or many-1 map
if (allFieldsMaps != null)
{
Dictionary <string, bool> srcFields = new Dictionary <string, bool>(TFStringComparer.WIConverterFieldRefName);
Dictionary <string, bool> targetFields = new Dictionary <string, bool>(TFStringComparer.WIConverterFieldRefName);
foreach (FieldMapsFieldMap fldMap in allFieldsMaps.FieldMap)
{
if (String.IsNullOrEmpty(fldMap.from))
{
string errMsg = UtilityMethods.Format(CurConResource.NullFromField, fileName);
ConverterMain.MigrationReport.WriteIssue(((int)CommonErrorNumbers.NullFromField).ToString(),
ReportIssueType.Critical, errMsg, string.Empty, null, CurConResource.Config, null);
Logger.Write(LogSource.Common, TraceLevel.Error, errMsg);
throw new ConverterException(errMsg);
}
// validate source field
if (!srcFields.ContainsKey(fldMap.from))
{
srcFields.Add(fldMap.from, false);
}
else
{
string errMsg = UtilityMethods.Format(CurConResource.InvalidSourceFieldMap, fldMap.from, fileName);
ConverterMain.MigrationReport.WriteIssue(((int)CommonErrorNumbers.InvalidSourceFieldMap).ToString(),
ReportIssueType.Critical, errMsg, string.Empty, null, CurConResource.Config, null);
Logger.Write(LogSource.Common, TraceLevel.Error, errMsg);
throw new ConverterException(errMsg);
}
//validate target field
if (String.IsNullOrEmpty(fldMap.to))
{
fldMap.to = fldMap.from;
}
if (!targetFields.ContainsKey(fldMap.to))
{
targetFields.Add(fldMap.to, false);
}
else
{
string errMsg = UtilityMethods.Format(CurConResource.InvalidTargetFieldMap,
fldMap.to, fileName);
ConverterMain.MigrationReport.WriteIssue(((int)CommonErrorNumbers.InvalidTargetFieldMap).ToString(),
ReportIssueType.Critical, errMsg, string.Empty, null, CurConResource.Config, null);
throw new ConverterException(errMsg);
}
}
}
return(allFieldsMaps);
}
public WITFieldMappings()
{
fieldMappings = new FieldMaps();
}