public Expression BuildPermissionEntityExpression(object context, ISet <EntityMutationInfo> cache, Expression memberExpression = null)
{
cache.Add(this);
var isCreation = State == EntityState.Added;
var entityParameterExpression = isCreation ? null : memberExpression ?? Expression.Parameter(EntityType.ClrType);
var selfPermissionBindingExpression = isCreation ? null : BuildSelfPermissionBinding(entityParameterExpression, context);
var permissionPropertiesMemberBindingExpressions = Properties.Values.Where(memberMutationInfo => memberMutationInfo.IsModified).Select(property => property.BuildMemberBindingExpression(entityParameterExpression, cache)).ToArray();
var scalarNavigationPropertiesMemberBindingExpressions = References.Values.Where(memberMutationInfo => memberMutationInfo.IsModified).Select(reference => reference.BuildMemberBindingExpression(entityParameterExpression, cache)).ToArray();
var collectionNavigationPropertiesMemberBindingExpressions = Collections.Values.Where(memberMutationInfo => memberMutationInfo.IsModified).Select(collection => collection.BuildMemberBindingExpression(entityParameterExpression, cache)).ToArray();
var memberBindingExpressions = permissionPropertiesMemberBindingExpressions.Union(scalarNavigationPropertiesMemberBindingExpressions).Union(collectionNavigationPropertiesMemberBindingExpressions);
if (selfPermissionBindingExpression != null)
{
memberBindingExpressions = memberBindingExpressions.Append(selfPermissionBindingExpression).ToArray();
}
memberBindingExpressions = memberBindingExpressions.Where(memberBinding => memberBinding != null);
if (memberBindingExpressions.Any())
{
if (entityParameterExpression != null)
{
var primaryKeyBindingExpression = PrimaryKey.Properties.Select(primaryKeyProperty => Expression.Bind(PermissionType.GetProperty(primaryKeyProperty.Name), Expression.MakeMemberAccess(entityParameterExpression, primaryKeyProperty.PropertyInfo)));
memberBindingExpressions = primaryKeyBindingExpression.Union(memberBindingExpressions);
}
var permissionEntityType = MutationContext.PermissionEntityTypeBuilder.TypeMap[EntityType];
var newPermissionExpression = BuildNewPermissionMemberInitExpression(permissionEntityType, memberBindingExpressions.ToArray());
if (memberExpression == null)
{
var findEntityExpression = State == EntityState.Added ? null : BuildFindEntityQuery();
var permissionExpression = findEntityExpression == null ? newPermissionExpression : BuildSelectFirstOrDefaultPermissionEntityExpression(findEntityExpression, (ParameterExpression)entityParameterExpression, newPermissionExpression);
return(permissionExpression);
}
else
{
return(newPermissionExpression);
}
}
return(null);
}
