Yes Trista, it is better to putting `SchemaContexts` into `shardingsphere-kernel`
------------------ Liang Zhang (John) Apache ShardingSphere & Dubbo Juan Pan <[email protected]> 于2020年5月17日周日 下午11:09写道： > Hi Liang, > > > What you mentioned is related to what I am working on now [1]. > Thanks for your proposal, which makes me have some new ideas. > Maybe I can consider putting `SchemaContexts` into > `shardingsphere-kernel`. > Please leave me some time for your proposal. > > > Best, > Trista > > > [1] https://github.com/apache/shardingsphere/issues/5593 > > > Juan Pan (Trista) > > Senior DBA & PPMC of Apache ShardingSphere(Incubating) > E-mail: [email protected] > > > > > On 05/17/2020 19:59，[email protected]<[email protected]> wrote： > Hi All, > > Very happy to see our new modules settle down, they look like excellent. > > I want talk about maybe we still missing a module which should process > database kernal related. > > This thread [1] discussed we need a new module to put runtime context and > meta data, they are belong to the new module. I have no good name of the > new module yet, I just call it `shardingsphere-kernel`. > > The `shardingsphere-kernel` should include: > > ``` > shardingsphere-kernel > -- shardingsphere-context > -- shardingsphere-pluggable > -- shardingsphere-query-optimizer > -- shardingsphere-transaction > ``` > > - The module `shardingsphere-context` can process runtime context like > thread[1] said. > - The module `shardingsphere-pluggable` can process the main flow of > parse, route, rewrite, execute and merge of pluggable with features. > - The module `shardingsphere-query-optimizer` is a new feature which > process SQL Query Optimizer. I prefer use Apache Calcite to improve us. We > still sent the SQL to backend databases if the SQL can be executed into > underlying databases fine, but we need to recognize some SQL (like > subquery, join query cross actual databases, etc.) which can not execute to > databases directly, and use Apache Calcite to handle them. > - The module `shardingsphere-transaction` is another database kernel, we > can just move current shardingsphere-transaction to there. > > Any advice? > > > [1] > > https://lists.apache.org/thread.html/rfb98778a0be6ef98be43a5177cdc4672469905b089bd1d1f8047e4da%40%3Cdev.shardingsphere.apache.org%3E > > ------------------ > > Liang Zhang (John) > Apache ShardingSphere & Dubbo >
