/// <summary>
/// Clone the element of the source signal into a new destination signal.
/// This does NOT clone the signal--it is designed to clone the specific child semantic element of the supplied signal.
/// </summary>
public dynamic Clone(dynamic sourceSignal, ISemanticElement childElem)
{
dynamic subsignal = null;
if (sourceSignal != null)
{
PropertyInfo pi = sourceSignal.GetType().GetProperty(childElem.Name); // Get the property of the source's sub-type, which will/must be a semantic element
object val = pi.GetValue(sourceSignal); // Get the instance of the semantic element we are cloning.
// A sub-ST can be null, especially as produced by the persistence engine with outer joins.
if (val != null)
{
subsignal = Create(childElem.Name); // Create the sub-signal
ISemanticTypeStruct subSemStruct = GetSemanticTypeStruct(childElem.Name);
foreach (INativeType nativeType in subSemStruct.NativeTypes)
{
// Copy any native types.
object ntVal = nativeType.GetValue(this, val);
nativeType.SetValue(this, subsignal, ntVal);
}
// Recurse drilling into semantic types of this type and copying any potential native types.
foreach (ISemanticElement semanticElem in subSemStruct.SemanticElements)
{
dynamic se = Clone((dynamic)val, semanticElem); // Clone the sub-semantic type
PropertyInfo piSub = subsignal.GetType().GetProperty(semanticElem.Name); // Get the PropertyInfo for this type.
piSub.SetValue(subsignal, se); // Assign the instance of the created semantic type to the value for this property.
}
}
}
return(subsignal);
}
/// <summary>
/// Internal recursion to flatten the hierarcy of semantic elements.
/// </summary>
protected void FlattenedSemanticTypes(List <ISemanticTypeStruct> ret, ISemanticElement se)
{
ret.Add(se.Element.Struct);
foreach (ISemanticElement s in se.Element.Struct.SemanticElements)
{
FlattenedSemanticTypes(ret, s);
}
}
/// <summary>
/// Internal recursion to flatten the hierarcy of semantic elements.
/// </summary>
protected void FlattenedSemanticTypes(List<ISemanticTypeStruct> ret, ISemanticElement se)
{
ret.Add(se.Element.Struct);
foreach (ISemanticElement s in se.Element.Struct.SemanticElements)
{
FlattenedSemanticTypes(ret, s);
}
}
/// <summary>
/// Registers a foreign key name and value to be associated with the specified semantic structure, which is used when the ST is inserted
/// after all child elements have been resolved.
/// </summary>
protected void RegisterForeignKeyID(Dictionary<ISemanticTypeStruct, List<FKValue>> stfkMap, ISemanticTypeStruct sts, ISemanticElement child, int id)
{
// Associate the ID to this ST's FK for that child table.
string fieldName = "FK_" + child.Name + "ID";
CreateKeyIfMissing(stfkMap, sts);
stfkMap[sts].Add(new FKValue(fieldName, id, child.UniqueField));
}
/// <summary>
/// Given a signal and the child element, returns the value of the child instance.
/// </summary>
protected object GetChildSignal(object signal, ISemanticElement child)
{
PropertyInfo piSub = signal.GetType().GetProperty(child.Name);
object childSignal = piSub.GetValue(signal);
return childSignal;
}
/// <summary>
/// Clone the element of the source signal into a new destination signal.
/// This does NOT clone the signal--it is designed to clone the specific child semantic element of the supplied signal.
/// </summary>
public dynamic Clone(dynamic sourceSignal, ISemanticElement childElem)
{
dynamic subsignal = null;
if (sourceSignal != null)
{
PropertyInfo pi = sourceSignal.GetType().GetProperty(childElem.Name); // Get the property of the source's sub-type, which will/must be a semantic element
object val = pi.GetValue(sourceSignal); // Get the instance of the semantic element we are cloning.
// A sub-ST can be null, especially as produced by the persistence engine with outer joins.
if (val != null)
{
subsignal = Create(childElem.Name); // Create the sub-signal
ISemanticTypeStruct subSemStruct = GetSemanticTypeStruct(childElem.Name);
foreach (INativeType nativeType in subSemStruct.NativeTypes)
{
// Copy any native types.
object ntVal = nativeType.GetValue(this, val);
nativeType.SetValue(this, subsignal, ntVal);
}
// Recurse drilling into semantic types of this type and copying any potential native types.
foreach (ISemanticElement semanticElem in subSemStruct.SemanticElements)
{
dynamic se = Clone((dynamic)val, semanticElem); // Clone the sub-semantic type
PropertyInfo piSub = subsignal.GetType().GetProperty(semanticElem.Name); // Get the PropertyInfo for this type.
piSub.SetValue(subsignal, se); // Assign the instance of the created semantic type to the value for this property.
}
}
}
return subsignal;
}
