MyBatis Multi-db vendor support

balsarori — Fri, 13 Mar 2015 03:09:43 GMT

An old post asking to upgrade to MyBatis 3.1.x to take advantage of MultiVendor database supporthttp://forums.activiti.org/content/mybatis-31xMyBatis 3.2.5 is currently used in Activiti.Using MyBatis Multi-db vendor support and other simple tweaks which includedPostgres specific statements were remo

Re: MyBatis Multi-db vendor support

balsarori — Mon, 16 Mar 2015 02:33:55 GMT

I ran different JUnit tests on h2 and mysql successfully. For db2 and mssql, I manually changed databaseType to be able to check generated statements. Here are two of the quries I used and their generated statements while setting the databaseType to db2

[java]
taskService.createNativeTaskQuery().sql("SELECT * FROM " + managementService.getTableName(Task.class)).listPage(0, 5);
[/java]
org.activiti.engine.impl.persistence.entity.TaskEntity.selectTaskByNativeQuery - ==> Preparing:
SELECT SUB.* FROM ( select RES.* , row_number() over (ORDER BY RES.ID_ asc) rnk FROM ( SELECT * FROM ACT_RU_TASK )RES ) SUB WHERE SUB.rnk >= ? AND SUB.rnk < ?

[java]
taskService.createTaskQuery().includeProcessVariables().includeTaskLocalVariables().orderByTaskPriority().desc().listPage(0, 1);
[/java]
org.activiti.engine.impl.persistence.entity.TaskEntity.selectTaskWithVariablesByQueryCriteria - ==> Preparing:
SELECT SUB.* FROM ( select distinct TEMPRES_ID_ as ID_, TEMPRES_REV_ as REV_, TEMPRES_NAME_ as NAME_, TEMPRES_PARENT_TASK_ID_ as PARENT_TASK_ID_, TEMPRES_DESCRIPTION_ as DESCRIPTION_, TEMPRES_PRIORITY_ as PRIORITY_, TEMPRES_CREATE_TIME_ as CREATE_TIME_, TEMPRES_OWNER_ as OWNER_, TEMPRES_ASSIGNEE_ as ASSIGNEE_, TEMPRES_DELEGATION_ as DELEGATION_, TEMPRES_EXECUTION_ID_ as EXECUTION_ID_, TEMPRES_PROC_INST_ID_ as PROC_INST_ID_, TEMPRES_PROC_DEF_ID_ as PROC_DEF_ID_, TEMPRES_TASK_DEF_KEY_ as TASK_DEF_KEY_, TEMPRES_DUE_DATE_ as DUE_DATE_, TEMPRES_SUSPENSION_STATE_ as SUSPENSION_STATE_, TEMPVAR_ID_ as VAR_ID_, TEMPVAR_NAME_ as VAR_NAME_, TEMPVAR_TYPE_ as VAR_TYPE_, TEMPVAR_REV_ as VAR_REV_, TEMPVAR_PROC_INST_ID_ as VAR_PROC_INST_ID_, TEMPVAR_EXECUTION_ID_ as VAR_EXECUTION_ID_, TEMPVAR_TASK_ID_ as VAR_TASK_ID_, TEMPVAR_BYTEARRAY_ID_ as VAR_BYTEARRAY_ID_, TEMPVAR_DOUBLE_ as VAR_DOUBLE_, TEMPVAR_TEXT_ as VAR_TEXT_, TEMPVAR_TEXT2_ as VAR_TEXT2_, TEMPVAR_LONG_ as VAR_LONG_ , row_number() over (ORDER BY TEMPRES_PRIORITY_ desc) rnk FROM ( select distinct RES.ID_ as TEMPRES_ID_, RES.REV_ as TEMPRES_REV_, RES.NAME_ as TEMPRES_NAME_, RES.PARENT_TASK_ID_ as TEMPRES_PARENT_TASK_ID_, RES.DESCRIPTION_ as TEMPRES_DESCRIPTION_, RES.PRIORITY_ as TEMPRES_PRIORITY_, RES.CREATE_TIME_ as TEMPRES_CREATE_TIME_, RES.OWNER_ as TEMPRES_OWNER_, RES.ASSIGNEE_ as TEMPRES_ASSIGNEE_, RES.DELEGATION_ as TEMPRES_DELEGATION_, RES.EXECUTION_ID_ as TEMPRES_EXECUTION_ID_, RES.PROC_INST_ID_ as TEMPRES_PROC_INST_ID_, RES.PROC_DEF_ID_ as TEMPRES_PROC_DEF_ID_, RES.TASK_DEF_KEY_ as TEMPRES_TASK_DEF_KEY_, RES.DUE_DATE_ as TEMPRES_DUE_DATE_, RES.SUSPENSION_STATE_ as TEMPRES_SUSPENSION_STATE_, VAR.ID_ as TEMPVAR_ID_, VAR.NAME_ as TEMPVAR_NAME_, VAR.TYPE_ as TEMPVAR_TYPE_, VAR.REV_ as TEMPVAR_REV_, VAR.PROC_INST_ID_ as TEMPVAR_PROC_INST_ID_, VAR.EXECUTION_ID_ as TEMPVAR_EXECUTION_ID_, VAR.TASK_ID_ as TEMPVAR_TASK_ID_, VAR.BYTEARRAY_ID_ as TEMPVAR_BYTEARRAY_ID_, VAR.DOUBLE_ as TEMPVAR_DOUBLE_, VAR.TEXT_ as TEMPVAR_TEXT_, VAR.TEXT2_ as TEMPVAR_TEXT2_, VAR.LONG_ as TEMPVAR_LONG_ from ACT_RU_TASK RES left outer join ACT_RU_VARIABLE VAR ON RES.ID_ = VAR.TASK_ID_ or RES.PROC_INST_ID_ = VAR.EXECUTION_ID_ )RES ) SUB WHERE SUB.rnk >= ? AND SUB.rnk < ?

For postgres and oracle, I think that they will also work.

topic MyBatis Multi-db vendor support in Alfresco Archive

MyBatis Multi-db vendor support

Re: MyBatis Multi-db vendor support