ema中许多消息类型的实现（如RefreshMsg、UpdateMsg、StatusMsg）均继承于access::Msg，看到class的实现中均提供了toString方法返回EmaString。如果我有一个EmaString，有什么方法可以将这个EmaString转换到access::Msg类型吗？例如我需要做一些数据回放，需要将字符串数据放到代码中处理，这时要把字符串转化到RefreshMsg、UpdateMsg、StatusMsg的消息进行处理。
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c++ API将字符串转为access::Msg类型的咨询
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Thanks,
AHS
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Thank you for reaching out to us.
The strings can't be converted to the EMA messages.
To record and replay data, you can use the tools mentioned in this A Quick Start Guide to Playback and Recording Data for the Refinitiv Real-Time SDK article.
我的程序需要先将EMA message转到string存储到queue，然后又线程从queue中读取string，想把这个string再转化到EMA message来处理的。如果没有方法将string转化到EMA message，那有什么方法能够解析string获取到到想要的字段吗？
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Hello @rikytan
Instead of keeping the message as EmaString, you can clone the message using the following method()
- refinitiv::ema::access::RefreshMsg::RefreshMsg(const RefreshMsg& other)
- refinitiv::ema::access::UpdateMsg::UpdateMsg(const UpdateMsg& other)
- refinitiv::ema::access::StatusMsg::StatusMsg(const StatusMsg& other)
Then keep the clone copy and you can parse this copied message like a normal EMA message object.
Please check mode detail on the EMA C++ Reference Manual Guide document under EMA C++ Development Guide page.
Note: The clone feature is available on the RTDK version 1.3.1 (EMA Java/C++ version 3.3.1) and above only.
