linghengqian commented on issue #16725: URL: https://github.com/apache/shardingsphere/issues/16725#issuecomment-3772787007
- To make a long story short, modifying actualDataNodes via the Java API is still not very human-friendly. I've opened https://github.com/apache/shardingsphere/pull/37778 . The branch where the PR is located supports this syntax. ```java import com.zaxxer.hikari.HikariConfig; import com.zaxxer.hikari.HikariDataSource; import java.sql.Connection; import java.sql.SQLException; import java.sql.Statement; public class ExampleUtils { void test() throws SQLException { HikariConfig config = new HikariConfig(); config.setJdbcUrl("jdbc:shardingsphere:classpath:demo.yaml"); config.setDriverClassName("org.apache.shardingsphere.driver.ShardingSphereDriver"); try (HikariDataSource dataSource = new HikariDataSource(config); Connection connection = dataSource.getConnection(); Statement statement = connection.createStatement()) { statement.execute(""" create default sharding database strategy if not exists ( type = 'standard', sharding_column = user_id, sharding_algorithm( type( name = class_based, properties( 'strategy' = 'STANDARD', 'algorithmClassName' = 'org.apache.shardingsphere.test.natived.commons.algorithm.ClassBasedInlineShardingAlgorithmFixture' ) ) ) ) """); statement.execute(""" create sharding table rule if not exists t_order ( datanodes( '<LITERAL>ds_0.t_order, ds_1.t_order, ds_2.t_order' ), key_generate_strategy(column = order_id, type(name = 'SNOWFLAKE')) ) """); statement.execute("SELECT * FROM t_order"); statement.execute(""" alter sharding table rule t_order ( datanodes( '<LITERAL>ds_0.t_order, ds_1.t_order, ds_2.t_order, ds_3.t_order' ), key_generate_strategy(column = order_id, type(name = 'SNOWFLAKE')) ) """); statement.execute("SELECT * FROM t_order"); } } } ``` - Feel free to submit reviews for https://github.com/apache/shardingsphere/pull/37778 . -- 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]
