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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2017/08/03 16:55:00 UTC

[jira] [Created] (ARROW-1329) [C++] Define "virtual table" interface

Wes McKinney created ARROW-1329:
-----------------------------------

             Summary: [C++] Define "virtual table" interface
                 Key: ARROW-1329
                 URL: https://issues.apache.org/jira/browse/ARROW-1329
             Project: Apache Arrow
          Issue Type: New Feature
          Components: C++
            Reporter: Wes McKinney


The idea is that a virtual table may reference Arrow data that is not yet available in memory. The implementation will define the semantics of how columns are loaded into memory. 

A virtual column interface will need to accompany this. For example:

{code:language=c++}
std::shared_ptr<VirtualTable> vtable = ...;
std::shared_ptr<VirtualColumn> vcolumn = vtable->column(i);
std::shared_ptr<Column> = vcolumn->Materialize();
std::shared_ptr<Table> = vtable->Materialize();
{code}



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