/// <summary>
/// Find <see cref="SemanticSchemaField"/> with given semantics.
/// </summary>
/// <param name="fieldSemantics">The semantics to check against</param>
/// <returns>Schema field or one of its embedded fields that match with the given semantics, null if a match cannot be found</returns>
public SemanticSchemaField FindFieldBySemantics(FieldSemantics fieldSemantics)
{
// Perform a breadth-first lookup: first see if any of the top-level fields match.
SemanticSchemaField matchingTopLevelField = Fields.FirstOrDefault(ssf => ssf.HasSemantics(fieldSemantics));
if (matchingTopLevelField != null)
{
return matchingTopLevelField;
}
// If none of the top-level fields match: let each top-level field do a breadth-first lookup of its embedded fields (recursive).
return Fields.Select(ssf => ssf.FindFieldBySemantics(fieldSemantics)).FirstOrDefault(matchingField => matchingField != null);
}
/// <summary>
/// Find <see cref="SemanticSchemaField"/> with given semantics.
/// </summary>
/// <param name="fieldSemantics">The semantics to check against</param>
/// <returns>Schema field or one of its embedded fields that match with the given semantics, null if a match cannot be found</returns>
public SemanticSchemaField FindFieldBySemantics(FieldSemantics fieldSemantics)
{
foreach (var field in Fields)
{
var matchingField = field.FindFieldBySemantics(fieldSemantics);
if (matchingField != null)
{
return matchingField;
}
}
return null;
}
/// <summary>
/// Check if current field contains given semantics.
/// </summary>
/// <param name="fieldSemantics">The semantics to check against</param>
/// <returns>True if this field contains given semantics, false otherwise</returns>
public bool ContainsSemantics(FieldSemantics fieldSemantics)
{
foreach (FieldSemantics property in Semantics)
{
// TODO add proper Equals implementation in FieldSemantics
if (property.Property.Equals(fieldSemantics.Property) &&
property.Prefix.Equals(fieldSemantics.Prefix) /*&& -- removed as this is breaking on embedded fields where the property.Entity is something like EmbeddedLink
property.Entity.Equals(fieldSemantics.Entity)*/)
{
return true;
}
}
return false;
}
/// <summary>
/// Determines whether the specified object is equal to the current <see cref="FieldSemantics"/>.
/// </summary>
/// <returns>
/// <c>true</c> if the specified object is equal to the current one.
/// </returns>
/// <param name="obj">The object to compare with the current object. </param>
public override bool Equals(object obj)
{
FieldSemantics other = obj as FieldSemantics;
return(other != null && base.Equals(other) && Property == other.Property);
}
/// <summary>
/// Find <see cref="SemanticSchemaField"/> with given semantics.
/// </summary>
/// <param name="fieldSemantics">The semantics to check against</param>
/// <returns>This field or one of its embedded fields that match with the given semantics, null if a match cannot be found</returns>
public SemanticSchemaField FindFieldBySemantics(FieldSemantics fieldSemantics)
{
if (ContainsSemantics(fieldSemantics))
{
return this;
}
foreach (SemanticSchemaField embeddedField in Fields)
{
SemanticSchemaField field = embeddedField.FindFieldBySemantics(fieldSemantics);
if (field != null)
{
return field;
}
}
return null;
}
private static IField GetFieldFromSemantics(MappingData mapData, SemanticProperty info)
{
KeyValuePair<string, string>? entityData = GetEntityData(info.Prefix, mapData.TargetEntitiesByPrefix, mapData.ParentDefaultPrefix);
if (entityData != null)
{
// determine field semantics
string vocab = entityData.Value.Key;
string prefix = SemanticMapping.GetPrefix(vocab, mapData.Localization);
if (prefix != null && mapData.EntityNames!=null)
{
string property = info.PropertyName;
string entity = mapData.EntityNames[vocab].FirstOrDefault();
if (entity != null && mapData.SemanticSchema!=null)
{
FieldSemantics fieldSemantics = new FieldSemantics(prefix, entity, property);
// locate semantic schema field
SemanticSchemaField matchingField = mapData.SemanticSchema.FindFieldBySemantics(fieldSemantics);
if (matchingField != null)
{
return ExtractMatchedField(matchingField, (matchingField.IsMetadata && mapData.Meta!=null) ? mapData.Meta : mapData.Content, mapData.EmbedLevel);
}
}
}
}
return null;
}
/// <summary> /// Check if current field has given semantics. /// </summary> /// <param name="fieldSemantics">The semantics to check against</param> /// <returns><c>true</c> if this field has given semantics, <c>false</c> otherwise.</returns> public bool HasSemantics(FieldSemantics fieldSemantics) => Semantics.Any(s => s.Equals(fieldSemantics));
