[GitHub] cherrylzhao opened a new issue #1877: SQLStatement cache for parser-engine should not be a singleton object

[GitBox <gi...@apache.org>]

cherrylzhao opened a new issue #1877: SQLStatement cache for parser-engine should not be a singleton object
URL: https://github.com/apache/incubator-shardingsphere/issues/1877
 
 
   we have used a singleton `ParsingResultCache` which key is prepared logic-sql to cache the SQLStatement. if the sharding-rule of the logic-sql have changed, or access the same logic-sql from multi-sharding-datasources, we will get an unexpected SQLStatement which sharding-condition is wrong. so we should cache the parsed SQLStatement within lifecycle of `ShardingContext`.
   
   - [ ] Make ParsingResultCache multi-instances available
   - [ ] Using ParsingResultCache in ShardingContext

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