Thanks for the help - much appreciated.
— Korry
> On Nov 1, 2018, at 7:19 PM, Xiening Dai <xndai....@live.com> wrote:
>
> 1) You can find the public headers in c++/include/orc. All the classes and
> methods have good documentation in the code. You can also take a look at the
> sample c++ codes under tools/src, especially
> FileContents.cc<http://FileContents.cc> and FileScan.cc<http://FileScan.cc>.
> Both demonstrate the usage of c++ reader.
>
> 2) What you are mentioning is a feature we call “Predicate Pushdown”.
> Unfortunately it is not supported by c++ reader currently. The java reader
> does support it through SearchArgument class. I assume the implementation
> would be similar for c++ when we add this support in the future.
>
>
> On Nov 1, 2018, at 1:28 PM, Korry Douglas
> <ko...@me.com.INVALID<mailto:ko...@me.com.INVALID>> wrote:
>
> Hi all - I’m an absolute ORC newbie so please forgive the novice questions.
>
> I’m trying to use the C++ API to implement a reader. I have two questions
> (to start with):
>
> 1) I’ve been reading the docs at https://orc.apache.org/docs/core-cpp.html -
> is there more complete documentation that describes all of the public classes
> that I can use?
>
> 2) My understanding is that an ORC file contains min/max indexes that can
> help me reduce the amount of data I have to read to satisfy a given query.
> Is there a class that I can use to specify the range of values that I want to
> read? Or do I have to read the statistics myself (for each stripe?) and
> manually inspect the min/max values.
>
> Thanks in advance.
>
>
> — Korry
>
