public static Query Update <T>(T instance, dynamic where = null)
{
var descriptor = GetDescriptor <T>();
var set = Dialect.ResolveColumnNames(descriptor, ColumnScope.Updated).ToList();
var hash = ReadAccessor.Create(instance.GetType()).AsReadOnlyDictionary(instance);
var hashKeysRewrite = hash.Keys.ToDictionary(k => Dialect.ResolveColumnName(descriptor, k), v => v);
IReadOnlyDictionary <string, object> whereHash;
List <string> whereFilter;
if (where == null)
{
// WHERE is derived from the instance's primary key
var keys = Dialect.ResolveKeyNames(descriptor);
whereFilter = keys.Intersect(hashKeysRewrite.Keys).ToList();
whereHash = hash;
}
else
{
// WHERE is explicitly provided
var accessor = ReadAccessor.Create(where.GetType());
whereHash = ReadAccessorExtensions.AsReadOnlyDictionary(accessor, where);
var whereHashKeysRewrite =
whereHash.Keys.ToDictionary(k => Dialect.ResolveColumnName(descriptor, k), v => v);
whereFilter = Dialect.ResolveColumnNames(descriptor).Intersect(whereHashKeysRewrite.Keys).ToList();
}
var setFilter = set.Intersect(hashKeysRewrite.Keys).ToList();
return(Update(descriptor, setFilter, whereFilter, hash, whereHash));
}
public static Query Update(IDataDescriptor descriptor, dynamic set, dynamic where = null)
{
ITypeReadAccessor setAccessor = ReadAccessor.Create(set.GetType());
IReadOnlyDictionary <string, object> setHash = ReadAccessorExtensions.AsReadOnlyDictionary(setAccessor, set);
var setFilter = descriptor.Updated.Select(c => c.ColumnName).Intersect(setHash.Keys).ToList();
IReadOnlyDictionary <string, object> whereHash = null;
if (where != null)
{
ITypeReadAccessor whereAccessor = ReadAccessor.Create(where.GetType());
whereHash = ReadAccessorExtensions.AsReadOnlyDictionary(whereAccessor, where);
}
var whereFilter = Dialect.ResolveColumnNames(descriptor);
if (whereHash != null)
{
whereFilter = whereFilter.Intersect(whereHash.Keys);
}
return(Update(descriptor, setFilter, whereFilter.ToList(), setHash, whereHash));
}