Mybatis Spring 批处理：如何在Tasklet 中使用where 子句从多个表中删除？

Question

我想像这样从不同的表中进行多次删除：

DELETE FROM TABLE1 WHERE T1_ID = :id AND T1_CREATION_DATE IS NULL;
DELETE FROM TABLE2 WHERE T2_ID = :id AND T2_CREATION_DATE IS NULL;
COMMIT;

但有 spring 个批次。

到目前为止我试过了：

String query = "DELETE FROM TABLE1 WHERE T1_ID = :id AND T1_CREATION_DATE IS NULL;"+
"DELETE FROM TABLE2 WHERE T2_ID = :id AND T2_CREATION_DATE IS NULL;"+
"COMMIT;";

@Override
public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {

    jobContext = stepExecution.getJobExecution().getExecutionContext();

    Employee employee = (Employee) jobContext.get("employee");

    Map<String, Object> parameters = new HashMap<String, Object>();

    parameters.put("id", employee.getId());

    new NamedParameterJdbcTemplate(dataSource).update(query,parameters);

    return RepeatStatus.FINISHED;
}

它正在编译，但我遇到了一个错误的 SQL 语法异常，我认为这是因为 JdbcTemplates 不管理事务查询。

有什么提示吗？

PS : 对于我的读者和作者，我使用Mybatis，他有没有办法处理多次删除？我试过了，但我无法在 Tasklet

中使用 mybatis sql 语句

Answer 1

多亏了你的帮助，我才成功。

起初，我是用这样的单独模板做的：

protected String expDelete = "DELETE FROM TABLE1 WHERE ID = :id AND CREATION_DATE IS NULL";
protected String dipDelete = "DELETE FROM TABLE2 WHERE ID = :id AND CREATION_DATE IS NULL";

Map<String, Object> parameters = new HashMap<String, Object>();
parameters.put("id", employeeInTreatment.getId());

new NamedParameterJdbcTemplate(this.dataSource).update(expDelete,parameters);
new NamedParameterJdbcTemplate(this.dataSource).update(dipDelete,parameters);

它有点工作（编译但未提交删除）。但我坚信我可以一次完成。

我创建了一个服务和一个指向我的 mybatis 映射器的 dao :

employeeBatchDao.deleteEmployeeImportedData(employeeId);

<delete id="deleteEmployeeImportedData" parameterType="Integer">
   {call
       declare
       begin
           DELETE FROM TABLE1 WHERE ID = :id AND CREATION_DATE IS NULL;
           DELETE FROM TABLE2 WHERE ID = :id AND CREATION_DATE IS NULL;
       end
    }

我在我的 tasklet 中调用了它并且成功了！现在我可以一次删除所有内容了！

Mybatis Spring 批处理：如何在Tasklet 中使用where 子句从多个表中删除？

Mybatis Spring Batch : how to delete from mutliple tables with where clause in Tasklet?

java

spring

spring-batch

mybatis

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