/// <summary>
/// Internal [link] resolution algorithm.
/// </summary>
/// <param name="obj"></param>
/// <param name="scope">The scoping rules to use to resolve links.</param>
private void ResolveInternal(object obj, ScopingRules scope)
{
foreach (IVariable field in GetAllDeclarations(GetModel(obj),
GetModel(obj).GetType(),
BindingFlags.Instance | BindingFlags.FlattenHierarchy | BindingFlags.NonPublic | BindingFlags.Public,
allLinks: true))
{
LinkAttribute link = field.GetAttribute(typeof(LinkAttribute)) as LinkAttribute;
if (link != null)
{
Type fieldType = field.DataType;
if (fieldType.IsArray)
{
fieldType = fieldType.GetElementType();
}
else if (field.DataType.Name.StartsWith("List") && field.DataType.GenericTypeArguments.Length == 1)
{
fieldType = field.DataType.GenericTypeArguments[0];
}
List <object> matches;
matches = services.FindAll(s => fieldType.IsAssignableFrom(s.GetType()));
if (matches.Count == 0 && obj is IModel)
{
Simulation parentSimulation = Apsim.Parent(obj as IModel, typeof(Simulation)) as Simulation;
if (fieldType.IsAssignableFrom(typeof(ILocator)) && parentSimulation != null)
{
matches.Add(new Locator(obj as IModel));
}
else if (fieldType.IsAssignableFrom(typeof(IEvent)) && parentSimulation != null)
{
matches.Add(new Events(obj as IModel));
}
}
if (matches.Count == 0)
{
if (link is ParentLinkAttribute)
{
matches = new List <object>();
matches.Add(GetParent(obj, fieldType));
}
else if (link is LinkByPathAttribute)
{
var locater = new Locater();
object match = locater.Get((link as LinkByPathAttribute).Path, obj as Model);
if (match != null)
{
matches.Add(match);
}
}
else if (link.IsScoped(field))
{
matches = scope.FindAll(obj as IModel).Cast <object>().ToList();
}
else
{
matches = GetChildren(obj);
}
}
matches.RemoveAll(match => !fieldType.IsAssignableFrom(GetModel(match).GetType()));
if (link.UseNameToMatch(field))
{
matches.RemoveAll(match => !StringUtilities.StringsAreEqual(GetName(match), field.Name));
}
if (field.DataType.IsArray)
{
Array array = Array.CreateInstance(fieldType, matches.Count);
for (int i = 0; i < matches.Count; i++)
{
array.SetValue(GetModel(matches[i]), i);
}
field.Value = array;
}
else if (field.DataType.Name.StartsWith("List") && field.DataType.GenericTypeArguments.Length == 1)
{
var listType = typeof(List <>);
var constructedListType = listType.MakeGenericType(fieldType);
IList array = Activator.CreateInstance(constructedListType) as IList;
for (int i = 0; i < matches.Count; i++)
{
array.Add(GetModel(matches[i]));
}
field.Value = array;
}
else if (matches.Count == 0)
{
if (!link.IsOptional)
{
throw new Exception("Cannot find a match for link " + field.Name + " in model " + GetFullName(obj));
}
}
else if (matches.Count >= 2 && !link.IsScoped(field))
{
throw new Exception(string.Format(": Found {0} matches for link {1} in model {2} !", matches.Count, field.Name, GetFullName(obj)));
}
else
{
field.Value = GetModel(matches[0]);
}
}
}
}
/// <summary>
/// Internal [link] resolution algorithm.
/// </summary>
/// <param name="obj"></param>
/// <param name="allModels">A collection of all model wrappers</param>
private void ResolveInternal(object obj, List <ModelWrapper> allModels)
{
// Go looking for [Link]s
foreach (FieldInfo field in ReflectionUtilities.GetAllFields(
GetModel(obj).GetType(),
BindingFlags.Instance | BindingFlags.FlattenHierarchy | BindingFlags.NonPublic | BindingFlags.Public))
{
LinkAttribute link = GetLinkAttribute(field);
if (link != null)
{
// Get the field type or the array element if it is an array field.
Type fieldType = field.FieldType;
if (fieldType.IsArray)
{
fieldType = fieldType.GetElementType();
}
else if (field.FieldType.Name.StartsWith("List") && field.FieldType.GenericTypeArguments.Length == 1)
{
fieldType = field.FieldType.GenericTypeArguments[0];
}
// Try and get a match from our services first.
List <object> matches;
matches = services.FindAll(s => fieldType.IsAssignableFrom(s.GetType()));
// If no match on services then try other options.
if (matches.Count == 0 && obj is IModel)
{
Simulation parentSimulation = Apsim.Parent(obj as IModel, typeof(Simulation)) as Simulation;
if (fieldType.IsAssignableFrom(typeof(ILocator)) && parentSimulation != null)
{
matches.Add(new Locator(obj as IModel));
}
else if (fieldType.IsAssignableFrom(typeof(IEvent)) && parentSimulation != null)
{
matches.Add(new Events(obj as IModel));
}
}
// If no match on services then try other options.
if (matches.Count == 0)
{
// Get a list of models that could possibly match.
if (link is ParentLinkAttribute)
{
matches = new List <object>();
matches.Add(GetParent(obj, fieldType));
}
else if (link.IsScoped(field))
{
matches = GetModelsInScope(obj, allModels);
}
else
{
matches = GetChildren(obj);
}
}
// Filter possible matches to those of the correct type.
matches.RemoveAll(match => !fieldType.IsAssignableFrom(GetModel(match).GetType()));
// If we should use name to match then filter matches to those with a matching name.
if (link.UseNameToMatch(field))
{
matches.RemoveAll(match => !StringUtilities.StringsAreEqual(GetName(match), field.Name));
}
if (field.FieldType.IsArray)
{
Array array = Array.CreateInstance(fieldType, matches.Count);
for (int i = 0; i < matches.Count; i++)
{
array.SetValue(GetModel(matches[i]), i);
}
field.SetValue(GetModel(obj), array);
}
else if (field.FieldType.Name.StartsWith("List") && field.FieldType.GenericTypeArguments.Length == 1)
{
var listType = typeof(List <>);
var constructedListType = listType.MakeGenericType(fieldType);
IList array = Activator.CreateInstance(constructedListType) as IList;
for (int i = 0; i < matches.Count; i++)
{
array.Add(GetModel(matches[i]));
}
field.SetValue(GetModel(obj), array);
}
else if (matches.Count == 0)
{
if (!link.IsOptional)
{
throw new Exception("Cannot find a match for link " + field.Name + " in model " + GetFullName(obj));
}
}
else if (matches.Count >= 2 && !link.IsScoped(field))
{
throw new Exception(string.Format(": Found {0} matches for link {1} in model {2} !", matches.Count, field.Name, GetFullName(obj)));
}
else
{
field.SetValue(GetModel(obj), GetModel(matches[0]));
}
}
}
}