[jira] [Created] (ARROW-2091) Interacting with arrow/pyarrow in C++

["Jun (JIRA)" <ji...@apache.org>]

Jun created ARROW-2091:
--------------------------

             Summary: Interacting with arrow/pyarrow in C++
                 Key: ARROW-2091
                 URL: https://issues.apache.org/jira/browse/ARROW-2091
             Project: Apache Arrow
          Issue Type: Improvement
            Reporter: Jun


I've been searching online for a while but cannot figure out how to do this. Please help if this is already a resolved issue.

I have a c++/python application that interacts with arrow/pyarrow. I want to write a C++ api that takes python objects directly and operate on them in c++.
{code:java}
PyObject* process_table(PyObject* table)
{
    // process the arrow table
    std::shared_ptr<arrow::Table> tablePtr = table; // How?
}{code}
The problem here is: how do I extract the internal std::shared_ptr<Table> from the PyObject?

Unfortunately we are not using cython in our stack, we operate on PyObject * directly in c++.

I can easily do this on numpy arrays:
{code:java}
PyObject * process_array(PyObject* arr)
{
    PyArray_Check(arr);
    // process the PyArrayObject directly
    ...
}{code}

I wonder is there any way to achieve this level of c++ integration without using cython? Thanks!



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