protected virtual object MapField(object fieldValues, Type modelPropertyType, SemanticSchemaField semanticSchemaField, MappingData mappingData)
{
Type sourceType = fieldValues.GetType();
bool isArray = sourceType.IsArray;
if (isArray)
{
sourceType = sourceType.GetElementType();
}
bool isListProperty = modelPropertyType.IsGenericList();
Type targetType = modelPropertyType.GetUnderlyingGenericListType() ?? modelPropertyType;
// Convert.ChangeType cannot convert non-nullable types to nullable types, so don't try that.
Type bareTargetType = modelPropertyType.GetUnderlyingNullableType() ?? targetType;
IList mappedValues = targetType.CreateGenericList();
if (typeof(EntityModel).IsAssignableFrom(targetType) && sourceType != typeof(EntityModelData) &&
(sourceType == typeof(string) && string.IsNullOrEmpty((string)fieldValues)))
{
return(isListProperty ? mappedValues : null);
}
switch (sourceType.Name)
{
case "String":
if (isArray)
{
foreach (string fieldValue in (string[])fieldValues)
{
mappedValues.Add(MapString(fieldValue, bareTargetType));
}
}
else
{
mappedValues.Add(MapString((string)fieldValues, bareTargetType));
}
break;
case "DateTime":
case "Single":
case "Double":
if (isArray)
{
foreach (object fieldValue in (Array)fieldValues)
{
mappedValues.Add(Convert.ChangeType(fieldValue, bareTargetType));
}
}
else
{
mappedValues.Add(Convert.ChangeType(fieldValues, bareTargetType));
}
break;
case "RichTextData":
if (isArray)
{
foreach (RichTextData fieldValue in (RichTextData[])fieldValues)
{
mappedValues.Add(MapRichText(fieldValue, targetType, mappingData.Localization));
}
}
else
{
mappedValues.Add(MapRichText((RichTextData)fieldValues, targetType, mappingData.Localization));
}
break;
case "ContentModelData":
string fieldXPath = semanticSchemaField.GetXPath(mappingData.ContextXPath);
if (isArray)
{
int index = 1;
foreach (ContentModelData embeddedFields in (ContentModelData[])fieldValues)
{
string indexedFieldXPath = $"{fieldXPath}[{index++}]";
mappedValues.Add(MapEmbeddedFields(embeddedFields, targetType, semanticSchemaField, indexedFieldXPath, mappingData));
}
}
else
{
string indexedFieldXPath = $"{fieldXPath}[1]";
mappedValues.Add(MapEmbeddedFields((ContentModelData)fieldValues, targetType, semanticSchemaField, indexedFieldXPath, mappingData));
}
break;
case "EntityModelData":
if (isArray)
{
foreach (EntityModelData entityModelData in (EntityModelData[])fieldValues)
{
mappedValues.Add(MapComponentLink(entityModelData, targetType, mappingData.Localization));
}
}
else
{
mappedValues.Add(MapComponentLink((EntityModelData)fieldValues, targetType, mappingData.Localization));
}
break;
case "KeywordModelData":
if (isArray)
{
foreach (KeywordModelData keywordModelData in (KeywordModelData[])fieldValues)
{
mappedValues.Add(MapKeyword(keywordModelData, targetType, mappingData.Localization));
}
}
else
{
mappedValues.Add(MapKeyword((KeywordModelData)fieldValues, targetType, mappingData.Localization));
}
break;
default:
throw new DxaException($"Unexpected field type: '{sourceType.Name}'.");
}
return(isListProperty ? mappedValues : ((mappedValues.Count == 0) ? null : mappedValues[0]));
}
protected virtual void MapSemanticProperties(ViewModel viewModel, MappingData mappingData)
{
Type modelType = viewModel.GetType();
IDictionary <string, List <SemanticProperty> > propertySemanticsMap = ModelTypeRegistry.GetPropertySemantics(modelType);
IDictionary <string, string> xpmPropertyMetadata = new Dictionary <string, string>();
Validation validation = mappingData.PropertyValidation;
foreach (KeyValuePair <string, List <SemanticProperty> > propertySemantics in propertySemanticsMap)
{
PropertyInfo modelProperty = modelType.GetProperty(propertySemantics.Key);
List <SemanticProperty> semanticProperties = propertySemantics.Value;
bool isFieldMapped = false;
string fieldXPath = null;
foreach (SemanticProperty semanticProperty in semanticProperties)
{
if (semanticProperty.PropertyName == SemanticProperty.AllFields)
{
modelProperty.SetValue(viewModel, GetAllFieldsAsDictionary(mappingData));
isFieldMapped = true;
break;
}
if ((semanticProperty.PropertyName == SemanticProperty.Self) && validation.MainSchema.HasSemanticType(semanticProperty.SemanticType))
{
try
{
object mappedSelf = MapComponentLink((EntityModelData)mappingData.SourceViewModel, modelProperty.PropertyType, mappingData.Localization);
modelProperty.SetValue(viewModel, mappedSelf);
isFieldMapped = true;
break;
}
catch (Exception ex)
{
Log.Debug($"Self mapping failed for {modelType.Name}.{modelProperty.Name}: {ex.Message}");
continue;
}
}
FieldSemantics fieldSemantics = new FieldSemantics(
semanticProperty.SemanticType.Vocab,
semanticProperty.SemanticType.EntityName,
semanticProperty.PropertyName,
null);
SemanticSchemaField semanticSchemaField = (mappingData.EmbeddedSemanticSchemaField == null) ?
ValidateField(validation, fieldSemantics) :
mappingData.EmbeddedSemanticSchemaField.FindFieldBySemantics(fieldSemantics);
if (semanticSchemaField == null)
{
// No matching Semantic Schema Field found for this Semantic Property; maybe another one will match.
continue;
}
// Matching Semantic Schema Field found
fieldXPath = IsFieldFromMainSchema(validation, fieldSemantics) ? semanticSchemaField.GetXPath(mappingData.ContextXPath) : null;
ContentModelData fields = semanticSchemaField.IsMetadata ? mappingData.MetadataFields : mappingData.Fields;
object fieldValue = FindFieldValue(semanticSchemaField, fields, mappingData.EmbedLevel);
if (fieldValue == null)
{
// No field value found; maybe we will find a value for another Semantic Property.
continue;
}
try
{
object mappedPropertyValue = MapField(fieldValue, modelProperty.PropertyType, semanticSchemaField, mappingData);
modelProperty.SetValue(viewModel, mappedPropertyValue);
}
catch (Exception ex)
{
throw new DxaException(
$"Unable to map field '{semanticSchemaField.Name}' to property {modelType.Name}.{modelProperty.Name} of type '{modelProperty.PropertyType.FullName}'.",
ex);
}
isFieldMapped = true;
break;
}
if (fieldXPath != null)
{
xpmPropertyMetadata.Add(modelProperty.Name, fieldXPath);
}
else if (!isFieldMapped && Log.IsDebugEnabled)
{
string formattedSemanticProperties = string.Join(", ", semanticProperties.Select(sp => sp.ToString()));
Log.Debug(
$"Property {modelType.Name}.{modelProperty.Name} cannot be mapped to a CM field of {validation.MainSchema}. Semantic properties: {formattedSemanticProperties}.");
}
}
EntityModel entityModel = viewModel as EntityModel;
if ((entityModel != null) && mappingData.Localization.IsXpmEnabled)
{
entityModel.XpmPropertyMetadata = xpmPropertyMetadata;
}
}