/// <summary>
/// Converts the specified value.
/// </summary>
/// <param name="value">The value.</param>
/// <param name="arguments">The arguments.</param>
/// <returns>
/// The converted value.
/// </returns>
public override object Convert(object value, SharePointListItemConversionArguments arguments)
{
TaxonomyValueCollection convertedValues = null;
var taxonomyFieldValueCollection = value as TaxonomyFieldValueCollection;
if (taxonomyFieldValueCollection == null)
{
var stringValue = value as string;
if (!string.IsNullOrEmpty(stringValue))
{
taxonomyFieldValueCollection = new TaxonomyFieldValueCollection(stringValue);
}
}
if (taxonomyFieldValueCollection != null)
{
if (SPContext.Current != null)
{
// Resolve the Term from the term store, because we want all Labels and we want to
// create the TaxonomyValue object with a label in the correct LCID (we want one with
// LCID = CurrentUICUlture.LCID
var underLyingTerms = new List<Term>();
foreach (TaxonomyFieldValue taxonomyFieldValue in taxonomyFieldValueCollection)
{
if (!string.IsNullOrEmpty(taxonomyFieldValue.TermGuid))
{
var foundTerm = this.taxonomyService.GetTermForId(SPContext.Current.Site, new Guid(taxonomyFieldValue.TermGuid));
if (foundTerm != null)
{
underLyingTerms.Add(foundTerm);
}
}
}
convertedValues = new TaxonomyValueCollection(underLyingTerms);
}
else
{
// We don't have access to a SPContext (needed to use the TaxonomyService), so we need to
// fall back on the non-UICulture-respecting TaxonomyValueCollection constructor
convertedValues = new TaxonomyValueCollection(taxonomyFieldValueCollection);
}
}
return convertedValues;
}
private void AddTags(string message, TaxonomyValueCollection taxonomyValueCollection)
{
var hashTags = message.Split(' ').Where(token => token.StartsWith("#", StringComparison.OrdinalIgnoreCase)).Select(hashTag => hashTag.Remove(0, 1));
foreach (string hashTag in hashTags)
{
var correspondingTaxonomyValue = this._taxonomyService.GetTaxonomyValueForLabel(SPContext.Current.Site, ProjectTaxonomy.TermStoreGroupName, ProjectTaxonomy.WallTermSetName, hashTag);
if (correspondingTaxonomyValue != null)
{
// A term with that label actually exists - use it as tag
taxonomyValueCollection.Add(correspondingTaxonomyValue);
}
}
}
/// <summary>
/// Converts the specified value.
/// </summary>
/// <param name="value">The value.</param>
/// <param name="arguments">The arguments.</param>
/// <returns>
/// The converted value.
/// </returns>
public override object Convert(object value, DataRowConversionArguments arguments)
{
TaxonomyValueCollection convertedValues = null;
if (value == DBNull.Value)
{
return null;
}
var taxonomyFieldValueCollection = value as TaxonomyFieldValueCollection;
if (taxonomyFieldValueCollection == null)
{
var stringValue = value as string;
if (!string.IsNullOrEmpty(stringValue))
{
var fieldObject = arguments.FieldCollection.Cast<SPField>()
.FirstOrDefault(f => f.InternalName == arguments.ValueKey);
if (fieldObject != null)
{
taxonomyFieldValueCollection = new TaxonomyFieldValueCollection(fieldObject);
taxonomyFieldValueCollection.PopulateFromLabelGuidPairs(stringValue);
}
else
{
return null;
}
}
}
if (taxonomyFieldValueCollection != null)
{
if (SPContext.Current != null)
{
// Resolve the Term from the term store, because we want all Labels and we want to
// create the TaxonomyValue object with a label in the correct LCID (we want one with
// LCID = CurrentUICUlture.LCID
var underLyingTerms = new List<Term>();
foreach (TaxonomyFieldValue taxonomyFieldValue in taxonomyFieldValueCollection)
{
if (!string.IsNullOrEmpty(taxonomyFieldValue.TermGuid))
{
var foundTerm = this.taxonomyService.GetTermForId(SPContext.Current.Site, new Guid(taxonomyFieldValue.TermGuid));
if (foundTerm != null)
{
underLyingTerms.Add(foundTerm);
}
}
}
convertedValues = new TaxonomyValueCollection(underLyingTerms);
}
else
{
// We don't have access to a SPContext (needed to use the TaxonomyService), so we need to
// fall back on the non-UICulture-respecting TaxonomyValueCollection constructor
convertedValues = new TaxonomyValueCollection(taxonomyFieldValueCollection);
}
}
return convertedValues;
}
