. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293 Implementation classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293 5.1.2 ClusterPersistRepository . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294 Implementation classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294 5.1.3 GovernanceWatcher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294 Implementation classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295 5.2 Configuration . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320 Implementation classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320 5.1.2 ClusterPersistRepository . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321 Implementation classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321 5.1.3 GovernanceWatcher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321 Implementation classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322 5.2 Configuration . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 468 Implementation classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 469 10.1.2 ClusterPersistRepository . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 469 Implementation classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470 vii 10.2 SQL Parser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 471 Implementation classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472 10.2.2 SQLStatementVisitorFacade

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440 Implementation classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 441 10.1.2 ClusterPersistRepository . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 441 Implementation classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442 10.2 SQL Parser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443 Implementation classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444 10.2.2 SQLStatementVisitorFacade

Low High Supported Languages Java Only Any Any Performance Low loss Relatively High loss Low loss De centralization Yes No No Static Entry No Yes No 1.1.4 Hybrid Architecture ShardingSphere‐JDBC adopts sharding tables can also lead to the full use of local transactions when single‐table data amount de‐ creases. Troubles brought by distributed transactions can be avoided by the wise use of different NOT NULL,runoob_test NATIONAL CH AR(40),submission_date DATE,PRIMARY KEY ( runoob_id))ENGINE=InnoDB DE‐ FAULT CHARSET=utf8; CREATE TABLE IF NOT EXISTS runoob_tbl ( runoob_id INT UNSIGNED AUTO_INCREMENT

Low High Supported Languages Java Only Any Any Performance Low loss Relatively High loss Low loss De centralization Yes No No Static Entry No Yes No 1.1.4 Hybrid Architecture ShardingSphere‐JDBC adopts sharding tables can also lead to the full use of local transactions when single‐table data amount de‐ creases. Troubles brought by distributed transactions can be avoided by the wise use of different Less More Supported Languages Java Only Any Any Performance Low loss Relatively High loss Low loss De centralization Yes No No Static Entry No Yes No ShardingSphere‐JDBC is suitable for java application

attention to this node. 5.2. Elastic Schedule 12 Apache ShardingSphere ElasticJob document C hi ld no de na me E p h e m e r a l n o d e Description el ec ti on :r aw ‐l at ex :ˋ i ns ta nc eˋ Y E S The error handling strategies can be used. Error handler strat- egy name Description • Bui lt- in* • De fa ul t* • Extra co nfig* Log Strategy Log error and do not interrupt job Yes Y es Throw Strategy Java API ElasticJob currently provides TracingConfiguration based on database in the configuration. De‐ velopers can also extend it through SPI. // init DataSource DataSource dataSource = ...; // define

Low High Supported Languages Java Only Any Any Performance Low loss Relatively High loss Low loss De centralization Yes No No Static Entry No Yes No 1.1.4 Hybrid Architecture ShardingSphere‐JDBC adopts sharding tables can also lead to the full use of local transactions when single‐table data amount de‐ creases. Troubles brought by distributed transactions can be avoided by the wise use of different Please refer to Built‐in Sharding Algorithm List and Built‐in Key Generate Algorithm List for more de‐ tails about type of algorithm. Attention Inline expression identifier can use ${...} or $->{..

Low High Supported Languages Java Only Any Any Performance Low loss Relatively High loss Low loss De centralization Yes No No Static Entry No Yes No 1.1.4 Hybrid Architecture ShardingSphere‐JDBC adopts sharding tables can also lead to the full use of local transactions when single‐table data amount de‐ creases. Troubles brought by distributed transactions can be avoided by the wise use of different Please refer to Built‐in Sharding Algorithm List and Built‐in Key Generate Algorithm List for more de‐ tails about type of algorithm. Attention Inline expression identifier can use ${...} or $->{..

————————————————————————————— 10 【更多 Java – Android 资料下载，可访问尚硅谷（中国）官网 www.atguigu.com 下载区】 public class Classes { private int id; private String name; private Teacher teacher; } 4). 定义 sql 映射文件 ClassMapper from class c, teacher t where c.teacher_id=t.t_id and c.c_id=#{id} resultMap="ClassResultMap2"> select * from class where c_id=#{id}