private EntityCollection LoadEntityCollection(ImportParameters parameters, EntitySchema rootSchema, IEnumerable <ColumnExpression> expressions)
{
var entityCollection = new EntityCollection(UserConnection, rootSchema);
var query = rootSchema.CreateSelect(UserConnection, rootSchema.Columns, true, out var columnMapping);
AddJoinToBufferedTable(query, expressions, columnMapping);
AddSessionIdCondition(parameters.ImportSessionId, query);
using (var dbExecutor = UserConnection.EnsureDBConnection()) {
using (var dataReader = query.ExecuteReader(dbExecutor)) {
entityCollection.Load(dataReader, columnMapping);
}
}
return(entityCollection);
}
