[GitHub] [shardingsphere] irwinai opened a new issue, #23025: shemaName uppercase with NPE exception

Wed, 21 Dec 2022 21:57:47 -0800 


irwinai opened a new issue, #23025:
URL: https://github.com/apache/shardingsphere/issues/23025

   ## Bug Report
   
   ### Which version of ShardingSphere did you use?
   5.1.1
   
   ### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
   ShardingSphere-JDBC
   
   ### Expected behavior
   query success
   
   ### Actual behavior
   NPE exception
   ```java
   Caused by: java.lang.NullPointerException
        at 
org.apache.shardingsphere.sharding.merge.dql.orderby.OrderByValue.getOrderValuesCaseSensitiveFromTables(OrderByValue.java:73)
 ~[shardingsphere-sharding-core-5.1.1.jar:5.1.1]
        at 
org.apache.shardingsphere.sharding.merge.dql.orderby.OrderByValue.getOrderValuesCaseSensitive(OrderByValue.java:64)
 ~[shardingsphere-sharding-core-5.1.1.jar:5.1.1]
        at 
org.apache.shardingsphere.sharding.merge.dql.orderby.OrderByValue.<init>(OrderByValue.java:58)
 ~[shardingsphere-sharding-core-5.1.1.jar:5.1.1]
        at 
org.apache.shardingsphere.sharding.merge.dql.orderby.OrderByStreamMergedResult.orderResultSetsToQueue(OrderByStreamMergedResult.java:56)
 ~[shardingsphere-sharding-core-5.1.1.jar:5.1.1]
        at 
org.apache.shardingsphere.sharding.merge.dql.orderby.OrderByStreamMergedResult.<init>(OrderByStreamMergedResult.java:50)
 ~[shardingsphere-sharding-core-5.1.1.jar:5.1.1]
        at 
org.apache.shardingsphere.sharding.merge.dql.ShardingDQLResultMerger.build(ShardingDQLResultMerger.java:89)
 ~[shardingsphere-sharding-core-5.1.1.jar:5.1.1]
        at 
org.apache.shardingsphere.sharding.merge.dql.ShardingDQLResultMerger.merge(ShardingDQLResultMerger.java:63)
 ~[shardingsphere-sharding-core-5.1.1.jar:5.1.1]
        at 
org.apache.shardingsphere.infra.merge.MergeEngine.executeMerge(MergeEngine.java:90)
 ~[shardingsphere-infra-merge-5.1.1.jar:5.1.1]
        at 
org.apache.shardingsphere.infra.merge.MergeEngine.merge(MergeEngine.java:80) 
~[shardingsphere-infra-merge-5.1.1.jar:5.1.1]
        at 
org.apache.shardingsphere.driver.jdbc.core.statement.ShardingSpherePreparedStatement.mergeQuery(ShardingSpherePreparedStatement.java:487)
 ~[shardingsphere-jdbc-core-5.1.1.jar:5.1.1]
        at 
org.apache.shardingsphere.driver.jdbc.core.statement.ShardingSpherePreparedStatement.getResultSet(ShardingSpherePreparedStatement.java:435)
 ~[shardingsphere-jdbc-core-5.1.1.jar:5.1.1]
        at 
org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getFirstResultSet(DefaultResultSetHandler.java:237)
 ~[mybatis-3.5.3.jar:3.5.3]
        at 
org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:187)
 ~[mybatis-3.5.3.jar:3.5.3]
        at 
org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:65)
 ~[mybatis-3.5.3.jar:3.5.3]
        at 
org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79)
 ~[mybatis-3.5.3.jar:3.5.3]
        at 
org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63) 
~[mybatis-3.5.3.jar:3.5.3]
        at 
org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324)
 ~[mybatis-3.5.3.jar:3.5.3]
        at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) 
~[mybatis-3.5.3.jar:3.5.3]
        at 
org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) 
~[mybatis-3.5.3.jar:3.5.3]
        at jdk.internal.reflect.GeneratedMethodAccessor346.invoke(Unknown 
Source) ~[?:?]
        at 
jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 ~[?:?]
        at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
        at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:63) 
~[mybatis-3.5.3.jar:3.5.3]
        at com.sun.proxy.$Proxy410.query(Unknown Source) ~[?:?]
        at 
com.github.pagehelper.PageInterceptor.intercept(PageInterceptor.java:108) 
~[pagehelper-5.1.11.jar:?]
        at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:61) 
~[mybatis-3.5.3.jar:3.5.3]
        at com.sun.proxy.$Proxy410.query(Unknown Source) ~[?:?]
        at 
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147)
 ~[mybatis-3.5.3.jar:3.5.3]
        at 
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140)
 ~[mybatis-3.5.3.jar:3.5.3]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
~[?:?]
        at 
jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
 ~[?:?]
        at 
jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 ~[?:?]
        at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
        at 
org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:427)
 ~[mybatis-spring-2.0.6.jar:2.0.6]
        ... 95 more
   ```
   
   ### Reason analyze (If you can)
   schemaName is converted to lower case when metadata is read
   <img width="772" alt="image" 
src="https://user-images.githubusercontent.com/4981449/209066630-183d3d38-4925-48bc-9b0f-b9107ab4e95d.png";>
   and then when merge query ,`getDefaultSchema` will be get null schema 
   just like "orderSchema".get("orderschema")
   <img width="917" alt="image" 
src="https://user-images.githubusercontent.com/4981449/209066843-482b824d-d3f6-4ca5-969b-a8ddbf74ec50.png";>
   
   so,my question is why the schema name is to `toLowerCase` ？
   The solution is that schemaName cannot be capitalized


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: 
[email protected]

For queries about this service, please contact Infrastructure at:
[email protected]

Reply via email to