private void AddRootPropertyDetails(IncludeSecurityExpressionBuilder includeMetadata, Type typeUnderQuery, ParameterExpression parameterForTypeUnderQuery, string propertyPathSegment)
{
var currentProperty = typeUnderQuery.GetProperty(propertyPathSegment);
var propertyAccessMetadata = new IncludePathMetadataFragment(typeUnderQuery, currentProperty.PropertyType, Expression.MakeMemberAccess(parameterForTypeUnderQuery, currentProperty));
includeMetadata.IncludedPropertyDetails.Add(propertyAccessMetadata);
}
private void AddNestedPropertyDetails(IncludeSecurityExpressionBuilder includeMetadata, string propertyPathSegment, IncludePathMetadataFragment previousIncludePathMetadataFragment)
{
var currentProperty = previousIncludePathMetadataFragment.PropertySingularType.GetProperty(propertyPathSegment);
var parameterExpression = Expression.Parameter(previousIncludePathMetadataFragment.PropertySingularType);
var propertyAccessMetadata = new IncludePathMetadataFragment(previousIncludePathMetadataFragment.PropertySingularType, currentProperty.PropertyType, Expression.MakeMemberAccess(parameterExpression, currentProperty));
includeMetadata.IncludedPropertyDetails.Add(propertyAccessMetadata);
}
private void AddPropertyDetails(IncludeSecurityExpressionBuilder includeMetadata, Type typeUnderQuery, ParameterExpression parameterForTypeUnderQuery, string propertyPathSegment)
{
var previousMetadata = includeMetadata.IncludedPropertyDetails.LastOrDefault();
if (previousMetadata == null)
{
// This is the root property.
AddRootPropertyDetails(includeMetadata, typeUnderQuery, parameterForTypeUnderQuery, propertyPathSegment);
}
else
{
// This is a nested property.
AddNestedPropertyDetails(includeMetadata, propertyPathSegment, previousMetadata);
}
}
private void CollectIncludeMetaDatas(MethodCallExpression callNode)
{
var includedPropertyPath = GetIncludedPropertyPath(callNode); // Example: "Entity.Property.Property"
if (callNode.Object == null)
{
return;
}
var queryType = callNode.Object.Type;
var includeMetadata = new IncludeSecurityExpressionBuilder(includedPropertyPath);
var typeUnderQuery = queryType.ToSingleType();
var parameterForTypeUnderQuery = Expression.Parameter(typeUnderQuery);
var includedPropertyPathSegments = includedPropertyPath.Split('.'); // Example: {"Entity", "Property", "Property"}
foreach (var propertyPathSegment in includedPropertyPathSegments)
{
AddPropertyDetails(includeMetadata, typeUnderQuery, parameterForTypeUnderQuery, propertyPathSegment);
}
_metadatas.Add(includeMetadata);
}