private EntityCollection NavigateToCollection(EntityCollection rootCollection, IEnumerable<string> segments)
{
if (!segments.Any())
return rootCollection;
var associationName = GetNavigationPropertyExactName(rootCollection.Name, segments.First());
var typeName = IsSingleSegmentWithTypeSpecification(segments)
? segments.Last()
: GetNavigationPropertyPartnerTypeName(rootCollection.Name, associationName);
var entityCollection = GetEntityCollection(typeName);
return segments.Count() == 1 || IsSingleSegmentWithTypeSpecification(segments)
? entityCollection
: NavigateToCollection(entityCollection, segments.Skip(1));
}
public EntityCollection GetDerivedEntityCollection(EntityCollection baseCollection, string entityTypeName)
{
var actualName = GetDerivedEntityTypeExactName(baseCollection.Name, entityTypeName);
return new EntityCollection(actualName, baseCollection);
}
public EntityCollection NavigateToCollection(EntityCollection rootCollection, string path)
{
return NavigateToCollection(rootCollection, GetCollectionPathSegments(path));
}
private EntityCollection NavigateToCollection(ExpressionContext context, EntityCollection rootCollection, string path)
{
var items = path.Split('/');
var associationName = context.Session.Metadata.GetNavigationPropertyExactName(rootCollection.Name, items.First());
var entityCollection = context.Session.Metadata.GetEntityCollection(
context.Session.Metadata.GetNavigationPropertyPartnerName(rootCollection.Name, associationName));
if (items.Count() == 1)
{
return entityCollection;
}
else
{
path = path.Substring(items.First().Length + 1);
return NavigateToCollection(context, entityCollection, path);
}
}
private IEnumerable<string> BuildReferencePath(List<string> segmentNames, EntityCollection entityCollection, List<string> elementNames, ExpressionContext context)
{
if (!elementNames.Any())
{
return segmentNames;
}
var objectName = elementNames.First();
if (entityCollection != null)
{
if (context.Session.Metadata.HasStructuralProperty(entityCollection.Name, objectName))
{
var propertyName = context.Session.Metadata.GetStructuralPropertyExactName(
entityCollection.Name, objectName);
segmentNames.Add(propertyName);
return BuildReferencePath(segmentNames, null, elementNames.Skip(1).ToList(), context);
}
else if (context.Session.Metadata.HasNavigationProperty(entityCollection.Name, objectName))
{
var propertyName = context.Session.Metadata.GetNavigationPropertyExactName(
entityCollection.Name, objectName);
var linkName = context.Session.Metadata.GetNavigationPropertyPartnerName(
entityCollection.Name, objectName);
var linkedEntityCollection = context.Session.Metadata.GetEntityCollection(linkName);
segmentNames.Add(propertyName);
return BuildReferencePath(segmentNames, linkedEntityCollection, elementNames.Skip(1).ToList(), context);
}
else if (IsFunction(objectName, context))
{
var formattedFunction = FormatAsFunction(objectName, context);
segmentNames.Add(formattedFunction);
return BuildReferencePath(segmentNames, null, elementNames.Skip(1).ToList(), context);
}
else if (context.Session.Metadata.IsOpenType(entityCollection.Name))
{
segmentNames.Add(objectName);
return BuildReferencePath(segmentNames, null, elementNames.Skip(1).ToList(), context);
}
else
{
throw new UnresolvableObjectException(objectName, string.Format("Invalid referenced object {0}", objectName));
}
}
else if (FunctionMapping.ContainsFunction(elementNames.First(), 0))
{
var formattedFunction = FormatAsFunction(objectName, context);
segmentNames.Add(formattedFunction);
return BuildReferencePath(segmentNames, null, elementNames.Skip(1).ToList(), context);
}
else
{
segmentNames.AddRange(elementNames);
return BuildReferencePath(segmentNames, null, new List<string>(), context);
}
}
protected string FormatExpandItem(KeyValuePair <string, ODataExpandOptions> pathWithOptions, EntityCollection entityCollection)
{
return(FormatNavigationPath(entityCollection, pathWithOptions.Key));
}
protected string FormatOrderByItem(KeyValuePair <string, bool> pathWithOrder, EntityCollection entityCollection)
{
var items = pathWithOrder.Key.Split('/');
if (items.Count() == 1)
{
var clause = _session.Metadata.HasStructuralProperty(entityCollection.Name, pathWithOrder.Key)
? _session.Metadata.GetStructuralPropertyExactName(entityCollection.Name, pathWithOrder.Key)
: _session.Metadata.HasNavigationProperty(entityCollection.Name, pathWithOrder.Key)
? _session.Metadata.GetNavigationPropertyExactName(entityCollection.Name, pathWithOrder.Key)
: pathWithOrder.Key;
if (pathWithOrder.Value)
{
clause += " desc";
}
return(clause);
}
else
{
var associationName = _session.Metadata.GetNavigationPropertyExactName(entityCollection.Name, items.First());
var text = associationName;
var item = pathWithOrder.Key.Substring(items.First().Length + 1);
entityCollection = _session.Metadata.GetEntityCollection(
_session.Metadata.GetNavigationPropertyPartnerTypeName(entityCollection.Name, associationName));
return(string.Format("{0}/{1}", text,
FormatOrderByItem(new KeyValuePair <string, bool>(item, pathWithOrder.Value), entityCollection)));
}
}
protected abstract void FormatExpandSelectOrderby(IList <string> commandClauses, EntityCollection resultCollection, FluentCommand command);
protected string FormatOrderByItem(KeyValuePair <string, bool> pathWithOrder, EntityCollection entityCollection)
{
var items = pathWithOrder.Key.Split('/');
if (items.Count() == 1)
{
var clause = _session.Metadata.HasStructuralProperty(entityCollection.Name, pathWithOrder.Key)
? _session.Metadata.GetStructuralPropertyExactName(entityCollection.Name, pathWithOrder.Key)
: _session.Metadata.HasNavigationProperty(entityCollection.Name, pathWithOrder.Key)
? _session.Metadata.GetNavigationPropertyExactName(entityCollection.Name, pathWithOrder.Key)
: pathWithOrder.Key;
if (pathWithOrder.Value)
{
clause += " desc";
}
return(clause);
}
else
{
if (_session.Metadata.HasNavigationProperty(entityCollection.Name, items[0]))
{
var associationName = _session.Metadata.GetNavigationPropertyExactName(entityCollection.Name, items[0]);
var text = associationName;
var item = pathWithOrder.Key.Substring(items.First().Length + 1);
entityCollection = _session.Metadata.GetEntityCollection(
_session.Metadata.GetNavigationPropertyPartnerTypeName(entityCollection.Name, associationName));
return($"{text}/{FormatOrderByItem(new KeyValuePair<string, bool>(item, pathWithOrder.Value), entityCollection)}");
}
else if (_session.Metadata.HasStructuralProperty(entityCollection.Name, items[0]))
{
var clause = _session.Metadata.GetStructuralPropertyPath(entityCollection.Name, items);
if (pathWithOrder.Value)
{
clause += " desc";
}
return(clause);
}
else
{
throw new UnresolvableObjectException(items[0], $"Property path [{items[0]}] not found");
}
}
}
internal EntityCollection(string name, EntityCollection baseEntityCollection = null)
{
_name = name;
_baseEntityCollection = baseEntityCollection;
}
public EntityCollection NavigateToCollection(EntityCollection rootCollection, string path)
{
return(NavigateToCollection(rootCollection, GetCollectionPathSegments(path)));
}
public EntityCollection GetDerivedEntityCollection(EntityCollection baseCollection, string entityTypeName)
{
var actualName = GetDerivedEntityTypeExactName(baseCollection.Name, entityTypeName);
return(new EntityCollection(actualName, baseCollection));
}
