|
public GetColumnValuesForAlias ( string alias ) : IList |
||
| alias | string | |
| return | IList |
|
private object CreateInstance(Type type, Row row, EntityCache entityCache, string alias = null)
{
var instance = CreateInstance(type);
IList <ColumnValue> columnValuesForType;
if (String.IsNullOrWhiteSpace(alias))
{
columnValuesForType = row.GetColumnValuesForType(type, _conventionReader);
}
else
{
columnValuesForType = row.GetColumnValuesForAlias(alias);
}
var columnValuesForCurrentType = columnValuesForType
.Where(x => !_conventionReader.IsEntityReferenceProperty(x.ColumnName, type))
.ToList();
if (columnValuesForCurrentType.Any() && columnValuesForCurrentType.All(x => x.Value == null))
{
return(null);
}
foreach (var columnValue in columnValuesForCurrentType)
{
var property = GetProperty(type, columnValue);
property.SetValue(instance, columnValue.Value, null);
}
var includesPrimaryKeyColumn = QueryIncludesPrimaryKeyColumn(type, row, alias);
// If the query does not include the primary key column we can't know if
// the cache already contains the entity or not, since we do not have anything
// unique to match the entities on. So, treat all rows as different to make sure
// no rows are incorrectly merged into one, which would be the case if we assumed
// that they represented the same entity.
if (entityCache.Contains(instance) && includesPrimaryKeyColumn)
{
return(entityCache.GetExisting(instance));
}
entityCache.Add(instance);
return(instance);
}
private bool QueryIncludesPrimaryKeyColumn(Type type, Row row, string primaryAlias)
{
var primaryKeyColumnName = _conventionReader.TryGetPrimaryKeyColumnName(type);
var typeHasIdProperty = primaryKeyColumnName != null;
IList <ColumnValue> columnValuesForType;
if (primaryAlias.IsNullOrWhiteSpace())
{
columnValuesForType = row.GetColumnValuesForType(type, _conventionReader);
}
else
{
columnValuesForType = row.GetColumnValuesForAlias(primaryAlias);
}
var resultIncludesPrimaryKeyColumn = columnValuesForType.Any(x => x.ColumnName == primaryKeyColumnName);
return(typeHasIdProperty && resultIncludesPrimaryKeyColumn);
}
