private static XElement CreateUpdatedXElement(IXElementWrapper wrapper, XElement originalElement)
{
XElement result = new XElement(originalElement.Name);
foreach (XAttribute attribute in originalElement.Attributes())
{
result.Add(new XAttribute(attribute.Name, attribute.Value));
}
wrapper.CommitData(result);
return(result);
}
public void Update(IEnumerable <IData> dataset)
{
Verify.ArgumentNotNull(dataset, "dataset");
CheckTransactionNotInAbortedState();
using (XmlDataProviderDocumentCache.CreateEditingContext())
{
var validatedFileRecords = new Dictionary <DataSourceId, FileRecord>();
var validatedElements = new Dictionary <DataSourceId, XElement>();
// verify phase
foreach (IData wrappedData in dataset)
{
var data = DataWrappingFacade.UnWrap(wrappedData);
Verify.ArgumentCondition(data != null, "dataset", "Collection contains a null element.");
Verify.ArgumentCondition(data.DataSourceId != null, "dataset", "Collection contains a data item with DataSourceId null property.");
ValidationHelper.Validate(data);
XmlDataTypeStore dataTypeStore = _xmlDataTypeStoresContainer.GetDataTypeStore(data.DataSourceId.InterfaceType);
var dataScope = data.DataSourceId.DataScopeIdentifier;
var culture = data.DataSourceId.LocaleScope;
var type = data.DataSourceId.InterfaceType;
var dataTypeStoreScope = dataTypeStore.GetDataScope(dataScope, culture, type);
dataTypeStore.Helper.ValidateDataType(data);
if (null == data.DataSourceId)
{
throw new ArgumentException("The DataSourceId property of the data argument must not be null", "data");
}
if (data.DataSourceId.ProviderName != _dataProviderContext.ProviderName)
{
throw new ArgumentException("The data element does not belong to this provider", "data");
}
var fileRecord = GetFileRecord(dataTypeStore, dataTypeStoreScope);
var index = fileRecord.RecordSet.Index;
IDataId dataId = data.DataSourceId.DataId;
XElement element = index[dataId];
Verify.ArgumentCondition(element != null, "dataset", "No data element corresponds to the given data id");
IXElementWrapper wrapper = data as IXElementWrapper;
Verify.ArgumentCondition(wrapper != null, "dataset", "The type of data was expected to be of type {0}".FormatWith(typeof(IXElementWrapper)));
XElement updatedElement = CreateUpdatedXElement(wrapper, element);
validatedFileRecords.Add(data.DataSourceId, fileRecord);
validatedElements.Add(data.DataSourceId, updatedElement);
}
foreach (var key in validatedElements.Keys)
{
FileRecord fileRecord = validatedFileRecords[key];
fileRecord.Dirty = true;
fileRecord.RecordSet.Index[key.DataId] = validatedElements[key];
}
XmlDataProviderDocumentCache.SaveChanges();
SubscribeToTransactionRollbackEvent();
}
}