gxgmy521 opened a new issue #4256: hintManager.setDatabaseShardingValue do not work. URL: https://github.com/apache/incubator-shardingsphere/issues/4256 ## Bug Report **For English only**, other languages will not accept. Before report a bug, make sure you have: - Searched open and closed [GitHub issues](https://github.com/apache/incubator-shardingsphere/issues). - Read documentation: [ShardingSphere Doc](https://shardingsphere.apache.org/document/current/en/overview). Please pay attention on issues you submitted, because we maybe need more details. If no response **more than 7 days** and we cannot reproduce it on current information, we will **close it**. Please answer these questions before submitting your issue. Thanks! ### Which version of ShardingSphere did you use? 4.0.0 ### Which project did you use? Sharding-JDBC or Sharding-Proxy? Sharding-JDBC ### Expected behavior The hintManager.setDatabaseShardingValue do not work,In the ShardingSphere-example , the `the hint-raw-jdbc-example` project don't work as expect,when I choose the type HintType TYPE = HintType.DATABASE_ONLY，the expected behavior should be all the sql routing to one datasource which is set by hintManager.setDatabaseShardingValue(1L); ### Actual behavior the hint does not work ,sql route to all datasouces，here is the log ``` [INFO ] 2020-02-12 12:56:13,923 --main-- [ShardingSphere-SQL] Rule Type: sharding [INFO ] 2020-02-12 12:56:13,924 --main-- [ShardingSphere-SQL] Logic SQL: SELECT i.* FROM t_order o, t_order_item i WHERE o.order_id = i.order_id [INFO ] 2020-02-12 12:56:13,925 --main-- [ShardingSphere-SQL] SQLStatement: SelectSQLStatementContext(super=CommonSQLStatementContext(sqlStatement=org.apache.shardingsphere.sql.parser.sql.statement.dml.SelectStatement@59496961, tablesContext=TablesContext(tables=[Table(name=t_order, alias=Optional.of(o)), Table(name=t_order_item, alias=Optional.of(i))], schema=Optional.absent())), projectionsContext=ProjectionsContext(startIndex=7, stopIndex=9, distinctRow=false, projections=[ShorthandProjection(owner=Optional.of(i))], columnLabels=[order_item_id, order_id, user_id, status]), groupByContext=org.apache.shardingsphere.sql.parser.relation.segment.select.groupby.GroupByContext@408b87aa, orderByContext=org.apache.shardingsphere.sql.parser.relation.segment.select.orderby.OrderByContext@79b08632, paginationContext=org.apache.shardingsphere.sql.parser.relation.segment.select.pagination.PaginationContext@787f32b7, containsSubquery=false) [INFO ] 2020-02-12 12:56:13,932 --main-- [ShardingSphere-SQL] Actual SQL: ds_0 ::: SELECT i.* FROM t_order o, t_order_item i WHERE o.order_id = i.order_id [INFO ] 2020-02-12 12:56:13,932 --main-- [ShardingSphere-SQL] Actual SQL: ds_1 ::: SELECT i.* FROM t_order o, t_order_item i WHERE o.order_id = i.order_id ``` ### Reason analyze (If you can) int the 3.1.0 version .there is a class `DatabaseHintRoutingEngine` to route to some certain sharding database without sharding tables,SQL parse and rewrite phase will be skipped,however ,in the 4.0.0 verision, there is no class to use the value I set in the hintManager, because there is no caller of the method `getDatabaseShardingValues` ```java /** * Get database sharding values. * * @return database sharding values */ public static Collection<Comparable<?>> getDatabaseShardingValues() { return getDatabaseShardingValues(""); } ``` ### Steps to reproduce the behavior, such as: SQL to execute, sharding rule configuration, when exception occur etc. git clone the project, https://github.com/apache/incubator-shardingsphere-example switch to 4.0.0, chage the HintType to HintType.DATABASE_ONLY and run the ExampleMain ### Example codes for reproduce this issue (such as a github link). https://github.com/apache/incubator-shardingsphere-example/tree/dev/sharding-jdbc-example/other-feature-example/hint-example
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