[jira] [Updated] (THRIFT-1712) Add TBase class for c++

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

     [ https://issues.apache.org/jira/browse/THRIFT-1712?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Martin Vogt updated THRIFT-1712:
--------------------------------

    Attachment: 010_base_struct_gen_140113v2.patch

This patch generates base classes and fingerprints for all structs, including _parg, _arg and _result from the function signatures. The "rest" patch does not need an update.

> Add TBase class for c++
> -----------------------
>
>                 Key: THRIFT-1712
>                 URL: https://issues.apache.org/jira/browse/THRIFT-1712
>             Project: Thrift
>          Issue Type: New Feature
>          Components: C++ - Compiler
>    Affects Versions: 0.8
>            Reporter: Martin Vogt
>            Assignee: Ben Craig
>            Priority: Minor
>              Labels: base, c++, class
>         Attachments: 010_base_struct_gen_140113v2.patch, base_struct_gen_131228v1.patch, base_struct_rest_131228v1.patch
>
>
> The generated c++ classes for struct's do not have a common base class.
> The patch adds a "base_struct" option to the compiler:
> - thrift --gen cpp:base_struct
> this will use a TBaseStruct in the thrift installation.
> Another option allows to replace the baseclass with an arbitrary one:
> -thrift --gen cpp:base_struct=MyBase,base_struct_inc=\\</path/MyBase.h\\>\n"
> With this it's possible to extend the TBaseStruct class in the thrift installation.
> I like to use this TBase class in QT, as a signal, for example:
> {quote}
> signals:
>        void update(const TBase& tBase);
> {quote}
> And in the receiver slot I then can check which kind of message was send:
> {quote}
>     // compare static pointers
>     if (tBase.ascii_fingerprint == User::ascii_fingerprint) \{
>             User* user=(User*)&tBase;
>             processUserMessage(user);
>    \}
> {quote}



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