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From "Igor Sapego (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-4046) C++: Support DML API
Date Wed, 18 Jan 2017 13:32:26 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-4046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15828043#comment-15828043
] 

Igor Sapego commented on IGNITE-4046:
-------------------------------------

After some studying, it seems that most flexible and optimized way to introduce identity resolvers
to C++ is to add {{IdentityResolver}} interface, and introduce {{BynaryType<T>::GetIdentityResolver}}
method for user types. {{IdentityResolver}} should be something like this:
{code}
class IdenntityResolver
{
    virtual int32_t GetHashCode(const BinaryObject& obj) = 0;
}
{code}

As you can see, {{BinaryObject}} type used here. It is used for the efficiency reasons, which
Pavel has pointed out. {{BinaryObject}} however is not implemented currently for C++ client,
so if there are no objections I'm going to add it as a blocking issue for this one.

> C++: Support DML API
> --------------------
>
>                 Key: IGNITE-4046
>                 URL: https://issues.apache.org/jira/browse/IGNITE-4046
>             Project: Ignite
>          Issue Type: Task
>          Components: platforms
>    Affects Versions: 1.8
>            Reporter: Denis Magda
>            Assignee: Igor Sapego
>              Labels: roadmap
>             Fix For: 1.9
>
>
> Ignite's Java component will provide support for DML soon (IGNITE-2294). At she same
time DML will be supported at the level of ODBC and JDBC drivers.
> As the next step we should include the similar functionality into Ignite.C++ by doing
the following:
> - Implement DML API;
> - Enhance {{query_example.cpp}} by doing INSERTs instead of cache.puts and adding UPDATE
and DELETE operation examples.
> - Add documentation to Ignite.C++ readme.io covering the feature. Most like most of the
content can be take from the general documentation when this ticket IGNITE-4018 is ready.



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