cherrylzhao opened a new issue #4991: make ShardingDataSource compatible with 
Seata in micro service distribution transaction
URL: https://github.com/apache/incubator-shardingsphere/issues/4991
 
 
   In micro-service distribution transaction, Seata will wrap 
`ShardingDataSource` as `DataSourceProxy` which communication with seata-server 
through RPC protocol,
   and DataSourceProxy will invoke some standard JDBC interface to get metadata 
from ShardingDataSource, however ShardingDataSource don't compatible with it. I 
have investigated in my local environment and found these issues we should 
resolve
   - [ ] support get information by logical schema in CachedDataBaseMetaData
   - [ ] support getParameterMetaData in ShardingPreparedStatement
   - [ ] add `client.transaction.micro-service-enable` in 
sharding-transaction-base-seata-at
   

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